What is the PM10 level in Connecticut, USA at the moment?

The PM10 concentration in Connecticut, USA is 11.088 μg/m3 at the moment.

What is the sulfur dioxide (SO2) level in Connecticut, USA at the moment?

Currently, Connecticut, USA has a sulfur dioxide (SO2) concentration of 1.103 ppb.

What is the ozone (O3) level in Connecticut, USA at the moment?

The current ozone (O3) level in Connecticut, USA at the moment is 29.194 ppm.

What is the nitrogen dioxide (NO2) level in Connecticut, USA at the moment?

Nitrogen dioxide (NO2) level in Connecticut, USA at the moment is 2.808 ppb.

Real-time air quality index in Connecticut, USA today

Name: Live air pollution levels in Connecticut, USA today
Creator: Ambee

Stay updated with real-time air quality in Connecticut, USA featuring accurate data on AQI, PM_2.5, PM₁₀, O₃, NO₂, SO₂, and CO levels. Use our interactive map and detailed forecasts to monitor pollution trends, manage health risks, and plan your daily activities with confidence.

Live AQI (Air Quality Index)

Good

Connecticut, USA

Last updated: ... (Local time)

Major air pollutants in Connecticut, USA

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

2.41 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

6.57 μg/m³

155

255

425

605+

Ozone (O₃)

30.41 ppb

201

201+

Sulfur Dioxide (SO₂)

0.21 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.78 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.27 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Connecticut, USA

Get Live Pollen Counts

Connecticut, USA

Scroll To Air Quality Map

Track live Connecticut, USA air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-11T17:00:00.000Z	44 \| good	7.812 \| good	12.111 \| good	38.901 \| good	0.15 \| good	9.154 \| good	0.302 \| good
2025-07-11T18:00:00.000Z	44 \| good	8.275 \| good	12.969 \| good	44.463 \| good	0.15 \| good	6.515 \| good	0.325 \| good
2025-07-11T19:00:00.000Z	45 \| good	8.454 \| good	14.746 \| good	48.679 \| good	0.323 \| good	7.732 \| good	0.322 \| good
2025-07-11T20:00:00.000Z	45 \| good	8.208 \| good	14.833 \| good	49.374 \| good	0.296 \| good	6.231 \| good	0.264 \| good
2025-07-11T21:00:00.000Z	50 \| good	7.798 \| good	13.964 \| good	54.097 \| good	0.442 \| good	5.323 \| good	0.271 \| good
2025-07-11T22:00:00.000Z	49 \| good	7.505 \| good	13.038 \| good	53.215 \| good	0.422 \| good	5.255 \| good	0.28 \| good
2025-07-11T23:00:00.000Z	48 \| good	7.04 \| good	12.106 \| good	51.787 \| good	0.377 \| good	6.205 \| good	0.264 \| good
2025-07-12T00:00:00.000Z	44 \| good	6.251 \| good	10.349 \| good	47.532 \| good	0.172 \| good	6.17 \| good	0.264 \| good
2025-07-12T01:00:00.000Z	41 \| good	5.873 \| good	10.318 \| good	43.835 \| good	0.16 \| good	6.109 \| good	0.286 \| good
2025-07-12T02:00:00.000Z	40 \| good	5.75 \| good	10.251 \| good	42.983 \| good	0.657 \| good	5.822 \| good	0.279 \| good
2025-07-12T03:00:00.000Z	33 \| good	6.283 \| good	28.353 \| good	33.011 \| good	0.821 \| good	6.436 \| good	0.223 \| good
2025-07-12T04:00:00.000Z	34 \| good	5.732 \| good	10.158 \| good	36.605 \| good	0.653 \| good	4.198 \| good	0.257 \| good
2025-07-12T05:00:00.000Z	38 \| good	5.542 \| good	9.081 \| good	41.269 \| good	1.169 \| good	3.941 \| good	0.236 \| good
2025-07-12T06:00:00.000Z	34 \| good	5.475 \| good	8.223 \| good	37.076 \| good	1.143 \| good	3.542 \| good	0.229 \| good
2025-07-12T07:00:00.000Z	33 \| good	5.531 \| good	8.279 \| good	35.784 \| good	0.291 \| good	3.23 \| good	0.236 \| good
2025-07-12T08:00:00.000Z	33 \| good	5.609 \| good	8.273 \| good	33.06 \| good	0.286 \| good	3.891 \| good	0.244 \| good
2025-07-12T09:00:00.000Z	33 \| good	5.585 \| good	8.199 \| good	32.514 \| good	0.368 \| good	4.569 \| good	0.222 \| good
2025-07-12T10:00:00.000Z	33 \| good	5.567 \| good	9.05 \| good	33.752 \| good	0.296 \| good	4.462 \| good	0.237 \| good
2025-07-12T11:00:00.000Z	33 \| good	5.58 \| good	8.243 \| good	34.66 \| good	0.211 \| good	5.397 \| good	0.237 \| good
2025-07-12T12:00:00.000Z	33 \| good	5.873 \| good	9.204 \| good	33.447 \| good	0.153 \| good	4.381 \| good	0.265 \| good
2025-07-12T13:00:00.000Z	33 \| good	6.383 \| good	9.229 \| good	32.521 \| good	0.213 \| good	5.361 \| good	0.302 \| good
2025-07-12T14:00:00.000Z	38 \| good	6.816 \| good	10.086 \| good	32.732 \| good	0.211 \| good	7.129 \| good	0.265 \| good
2025-07-12T15:00:00.000Z	38 \| good	7.248 \| good	10.906 \| good	36.016 \| good	0.184 \| good	5.342 \| good	0.272 \| good
2025-07-12T16:00:00.000Z	44 \| good	7.747 \| good	11.764 \| good	40.024 \| good	0.27 \| good	5.858 \| good	0.265 \| good
2025-07-12T17:00:00.000Z	44 \| good	7.821 \| good	11.764 \| good	41.344 \| good	0.416 \| good	3.485 \| good	0.265 \| good
2025-07-12T18:00:00.000Z	44 \| good	7.673 \| good	11.839 \| good	42.387 \| good	0.361 \| good	3.519 \| good	0.273 \| good
2025-07-12T19:00:00.000Z	39 \| good	7.157 \| good	11.777 \| good	42.031 \| good	0.385 \| good	3.299 \| good	0.28 \| good
2025-07-12T20:00:00.000Z	38 \| good	5.792 \| good	10.976 \| good	40.712 \| good	0.283 \| good	3.515 \| good	0.265 \| good
2025-07-12T21:00:00.000Z	39 \| good	4.701 \| good	8.354 \| good	41.939 \| good	0.417 \| good	3.427 \| good	0.271 \| good
2025-07-12T22:00:00.000Z	44 \| good	4.359 \| good	8.311 \| good	46.854 \| good	0.472 \| good	3.551 \| good	0.279 \| good
2025-07-12T23:00:00.000Z	41 \| good	4.231 \| good	8.161 \| good	44.402 \| good	0.272 \| good	4.212 \| good	0.252 \| good
2025-07-13T00:00:00.000Z	38 \| good	4.259 \| good	8.143 \| good	40.74 \| good	0.376 \| good	4.809 \| good	0.279 \| good
2025-07-13T01:00:00.000Z	37 \| good	4.333 \| good	8.106 \| good	40.452 \| good	0.467 \| good	5.481 \| good	0.279 \| good
2025-07-13T02:00:00.000Z	35 \| good	4.527 \| good	8.139 \| good	37.55 \| good	0.408 \| good	5.826 \| good	0.295 \| good
2025-07-13T03:00:00.000Z	27 \| good	4.266 \| good	8.303 \| good	28.531 \| good	0.468 \| good	5.939 \| good	0.284 \| good
2025-07-13T04:00:00.000Z	30 \| good	3.873 \| good	7.188 \| good	32.167 \| good	0.625 \| good	4.636 \| good	0.292 \| good
2025-07-13T05:00:00.000Z	25 \| good	3.762 \| good	7.332 \| good	27.263 \| good	1.135 \| good	4.691 \| good	0.283 \| good
2025-07-13T06:00:00.000Z	28 \| good	3.974 \| good	7.057 \| good	29.626 \| good	1.153 \| good	3.017 \| good	0.261 \| good
2025-07-13T07:00:00.000Z	29 \| good	3.465 \| good	6.19 \| good	30.654 \| good	1.114 \| good	3.211 \| good	0.241 \| good
2025-07-13T08:00:00.000Z	28 \| good	3.508 \| good	6.082 \| good	30.358 \| good	1.142 \| good	2.892 \| good	0.241 \| good
2025-07-13T09:00:00.000Z	28 \| good	3.41 \| good	5.944 \| good	29.613 \| good	0.839 \| good	2.815 \| good	0.165 \| good
2025-07-13T10:00:00.000Z	30 \| good	3.208 \| good	5.161 \| good	32.004 \| good	0.357 \| good	2.026 \| good	0.175 \| good
2025-07-13T11:00:00.000Z	30 \| good	2.331 \| good	4.174 \| good	31.739 \| good	0.28 \| good	2.467 \| good	0.207 \| good
2025-07-13T12:00:00.000Z	31 \| good	1.64 \| good	2.378 \| good	32.958 \| good	0.328 \| good	2.884 \| good	0.207 \| good
2025-07-13T13:00:00.000Z	30 \| good	1.624 \| good	2.316 \| good	31.636 \| good	0.312 \| good	3.368 \| good	0.207 \| good
2025-07-13T14:00:00.000Z	29 \| good	1.654 \| good	2.385 \| good	31.137 \| good	0.329 \| good	2.928 \| good	0.208 \| good
2025-07-13T15:00:00.000Z	29 \| good	1.802 \| good	2.365 \| good	31.285 \| good	0.377 \| good	2.43 \| good	0.208 \| good
2025-07-13T16:00:00.000Z	29 \| good	1.903 \| good	3.259 \| good	31.019 \| good	0.157 \| good	2.632 \| good	0.239 \| good
2025-07-13T16:00:00.000Z	28 \| good	2.409 \| good	6.574 \| good	30.407 \| good	0.207 \| good	2.778 \| good	0.27 \| good
2025-07-13T09:00:00.000Z	23 \| good	4.418 \| good	19.213 \| good	24.655 \| good	0.228 \| good	2.114 \| good	0.119 \| good
2025-07-13T10:00:00.000Z	22 \| good	3.745 \| good	16.472 \| good	23.137 \| good	0.213 \| good	2.131 \| good	0.118 \| good
2025-07-13T11:00:00.000Z	20 \| good	3.139 \| good	13.611 \| good	22.263 \| good	0.199 \| good	2.148 \| good	0.117 \| good
2025-07-13T12:00:00.000Z	19 \| good	2.194 \| good	8.803 \| good	20.363 \| good	0.185 \| good	2.165 \| good	0.115 \| good
2025-07-13T13:00:00.000Z	21 \| good	1.839 \| good	7.598 \| good	22.962 \| good	0.216 \| good	2.155 \| good	0.118 \| good
2025-07-13T14:00:00.000Z	24 \| good	1.016 \| good	3.821 \| good	25.793 \| good	0.247 \| good	2.145 \| good	0.121 \| good
2025-07-13T15:00:00.000Z	30 \| good	1.577 \| good	6.59 \| good	31.56 \| good	0.278 \| good	2.135 \| good	0.124 \| good
2025-07-13T16:00:00.000Z	32 \| good	2.194 \| good	8.87 \| good	34.69 \| good	0.27 \| good	1.852 \| good	0.124 \| good
2025-07-13T17:00:00.000Z	35 \| good	1.58 \| good	6.587 \| good	37.749 \| good	0.262 \| good	1.569 \| good	0.125 \| good
2025-07-13T18:00:00.000Z	36 \| good	2.229 \| good	9.344 \| good	38.959 \| good	0.254 \| good	1.287 \| good	0.125 \| good
2025-07-13T19:00:00.000Z	37 \| good	2.486 \| good	9.971 \| good	40.494 \| good	0.243 \| good	1.323 \| good	0.125 \| good
2025-07-13T20:00:00.000Z	39 \| good	2.06 \| good	8.614 \| good	41.982 \| good	0.231 \| good	1.359 \| good	0.126 \| good
2025-07-13T21:00:00.000Z	40 \| good	2.362 \| good	9.614 \| good	43.155 \| good	0.22 \| good	1.395 \| good	0.126 \| good
2025-07-13T22:00:00.000Z	40 \| good	2.125 \| good	8.847 \| good	42.714 \| good	0.25 \| good	2.113 \| good	0.132 \| good
2025-07-13T23:00:00.000Z	37 \| good	1.526 \| good	6.315 \| good	39.986 \| good	0.28 \| good	2.832 \| good	0.138 \| good
2025-07-14T00:00:00.000Z	31 \| good	3.224 \| good	13.726 \| good	33.256 \| good	0.311 \| good	3.551 \| good	0.145 \| good
2025-07-14T01:00:00.000Z	26 \| good	3.562 \| good	15.817 \| good	28.49 \| good	0.373 \| good	3.976 \| good	0.148 \| good
2025-07-14T02:00:00.000Z	27 \| good	5.154 \| good	22.305 \| good	24.953 \| good	0.436 \| good	4.402 \| good	0.15 \| good
2025-07-14T03:00:00.000Z	22 \| good	4.406 \| good	19.243 \| good	22.901 \| good	0.498 \| good	4.827 \| good	0.153 \| good
2025-07-14T04:00:00.000Z	22 \| good	4.447 \| good	19.093 \| good	22.757 \| good	0.507 \| good	4.647 \| good	0.152 \| good
2025-07-14T05:00:00.000Z	22 \| good	4.198 \| good	18.445 \| good	22.323 \| good	0.516 \| good	4.467 \| good	0.15 \| good
2025-07-14T06:00:00.000Z	22 \| good	3.544 \| good	15.85 \| good	22.354 \| good	0.524 \| good	4.287 \| good	0.148 \| good
2025-07-14T07:00:00.000Z	22 \| good	3.663 \| good	15.955 \| good	20.919 \| good	0.486 \| good	4.263 \| good	0.148 \| good
2025-07-14T08:00:00.000Z	22 \| good	3.558 \| good	15.877 \| good	20.529 \| good	0.448 \| good	4.239 \| good	0.148 \| good
2025-07-14T09:00:00.000Z	19 \| good	2.595 \| good	10.471 \| good	20.686 \| good	0.41 \| good	4.215 \| good	0.148 \| good
2025-07-14T10:00:00.000Z	19 \| good	2.543 \| good	10.271 \| good	19.782 \| good	0.39 \| good	3.971 \| good	0.144 \| good
2025-07-14T11:00:00.000Z	19 \| good	1.742 \| good	7.182 \| good	19.773 \| good	0.369 \| good	3.727 \| good	0.139 \| good
2025-07-14T12:00:00.000Z	19 \| good	1.507 \| good	6.344 \| good	20.915 \| good	0.349 \| good	3.483 \| good	0.135 \| good
2025-07-14T13:00:00.000Z	21 \| good	1.724 \| good	7.126 \| good	23.186 \| good	0.354 \| good	3.291 \| good	0.137 \| good
2025-07-14T14:00:00.000Z	27 \| good	1.803 \| good	7.484 \| good	28.631 \| good	0.358 \| good	3.098 \| good	0.138 \| good
2025-07-14T15:00:00.000Z	30 \| good	3.161 \| good	13.488 \| good	32.166 \| good	0.363 \| good	2.905 \| good	0.14 \| good
2025-07-14T16:00:00.000Z	34 \| good	3.918 \| good	17.113 \| good	37.067 \| good	0.39 \| good	2.41 \| good	0.142 \| good
2025-07-14T17:00:00.000Z	42 \| good	5.815 \| good	25.133 \| good	44.987 \| good	0.416 \| good	1.914 \| good	0.144 \| good
2025-07-14T18:00:00.000Z	50 \| good	6.557 \| good	29.391 \| good	53.963 \| good	0.443 \| good	1.418 \| good	0.146 \| good
2025-07-14T19:00:00.000Z	58 \| moderate	6.787 \| good	29.54 \| good	57.422 \| fine	0.428 \| good	1.899 \| good	0.152 \| good
2025-07-14T20:00:00.000Z	77 \| moderate	8.073 \| good	35.575 \| good	63.272 \| fine	0.413 \| good	2.38 \| good	0.158 \| good
2025-07-14T21:00:00.000Z	87 \| moderate	9.549 \| good	42.256 \| good	66.284 \| fine	0.398 \| good	2.861 \| good	0.163 \| good
2025-07-14T22:00:00.000Z	74 \| moderate	10.837 \| good	47.695 \| good	61.842 \| fine	0.489 \| good	4.234 \| good	0.18 \| good
2025-07-14T23:00:00.000Z	71 \| moderate	7.946 \| good	34.871 \| good	60.633 \| fine	0.581 \| good	5.607 \| good	0.197 \| good
2025-07-15T00:00:00.000Z	64 \| moderate	8.884 \| good	39.221 \| good	58.927 \| fine	0.672 \| good	6.98 \| good	0.214 \| good
2025-07-15T01:00:00.000Z	50 \| good	9.475 \| good	42.166 \| good	54.273 \| good	0.832 \| good	7.733 \| good	0.217 \| good
2025-07-15T02:00:00.000Z	49 \| good	9.373 \| good	41.698 \| good	43.594 \| good	0.991 \| good	8.485 \| good	0.22 \| good
2025-07-15T03:00:00.000Z	44 \| good	7.563 \| good	33.296 \| good	34.958 \| good	1.15 \| good	9.237 \| good	0.223 \| good
2025-07-15T04:00:00.000Z	38 \| good	6.862 \| good	30.342 \| good	30.017 \| good	1.369 \| good	9.72 \| good	0.222 \| good
2025-07-15T05:00:00.000Z	38 \| good	7.487 \| good	33.172 \| good	29.365 \| good	1.587 \| good	10.204 \| good	0.222 \| good
2025-07-15T06:00:00.000Z	52 \| moderate	10.358 \| good	11.086 \| good	21.96 \| good	1.806 \| good	10.69 \| good	0.221 \| good
2025-07-15T07:00:00.000Z	54 \| moderate	11.437 \| good	50.618 \| good	29.286 \| good	1.66 \| good	10.058 \| good	0.226 \| good
2025-07-15T08:00:00.000Z	62 \| moderate	15.189 \| fine	67.76 \| fine	27.476 \| good	1.515 \| good	9.429 \| good	0.232 \| good

Connecticut

Get reliable air quality data to drive your business

Connecticut, USA air quality map: Stay updated on AQI near you

Air quality in cities of Connecticut, USA

City	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
Norwalk, Connecticut	33 Good	2.42μg/m³ Good	6.74μg/m³ Good	35.63ppb Good	0.39ppb Good	1.85ppb Good	0.25ppm Good
Westport, Connecticut	33 Good	2.34μg/m³ Good	7.04μg/m³ Good	35.86ppb Good	0.37ppb Good	1.65ppb Good	0.25ppm Good
Wilton, Connecticut	33 Good	2.38μg/m³ Good	7.44μg/m³ Good	35.51ppb Good	0.49ppb Good	1.84ppb Good	0.24ppm Good
Fairfield, Connecticut	31 Good	2.24μg/m³ Good	5.62μg/m³ Good	34.27ppb Good	0.20ppb Good	1.94ppb Good	0.24ppm Good
Greenwich, Connecticut	32 Good	2.59μg/m³ Good	7.47μg/m³ Good	35.05ppb Good	0.73ppb Good	3.64ppb Good	0.26ppm Good
Monroe, Connecticut	31 Good	2.10μg/m³ Good	5.72μg/m³ Good	34.44ppb Good	0.28ppb Good	2.19ppb Good	0.23ppm Good
Newtown, Connecticut	32 Good	2.32μg/m³ Good	7.34μg/m³ Good	34.53ppb Good	0.32ppb Good	2.20ppb Good	0.23ppm Good
New Canaan, Connecticut	32 Good	2.35μg/m³ Good	8.74μg/m³ Good	34.70ppb Good	0.57ppb Good	2.16ppb Good	0.25ppm Good
Stamford, Connecticut	32 Good	2.59μg/m³ Good	7.13μg/m³ Good	35.02ppb Good	0.67ppb Good	3.32ppb Good	0.26ppm Good
Weston, Connecticut	32 Good	2.45μg/m³ Good	6.45μg/m³ Good	35.10ppb Good	0.35ppb Good	1.92ppb Good	0.25ppm Good
Bridgeport, Connecticut	31 Good	2.20μg/m³ Good	5.02μg/m³ Good	33.55ppb Good	0.10ppb Good	2.11ppb Good	0.24ppm Good
Danbury, Connecticut	31 Good	3.29μg/m³ Good	5.01μg/m³ Good	32.99ppb Good	0.40ppb Good	2.02ppb Good	0.23ppm Good
Milford, Connecticut	31 Good	2.02μg/m³ Good	5.58μg/m³ Good	33.99ppb Good	0.22ppb Good	2.05ppb Good	0.24ppm Good
Trumbull, Connecticut	31 Good	2.22μg/m³ Good	5.43μg/m³ Good	33.97ppb Good	0.18ppb Good	2.01ppb Good	0.24ppm Good
Stratford, Connecticut	31 Good	2.00μg/m³ Good	5.76μg/m³ Good	33.92ppb Good	0.21ppb Good	2.09ppb Good	0.24ppm Good
Southbury, Connecticut	31 Good	2.23μg/m³ Good	5.46μg/m³ Good	33.77ppb Good	0.35ppb Good	2.34ppb Good	0.22ppm Good
Bethel, Connecticut	31 Good	3.19μg/m³ Good	5.14μg/m³ Good	32.93ppb Good	0.39ppb Good	2.01ppb Good	0.23ppm Good
Brookfield, Connecticut	31 Good	3.08μg/m³ Good	5.14μg/m³ Good	32.61ppb Good	0.39ppb Good	2.02ppb Good	0.23ppm Good
Bristol, Connecticut	31 Good	2.11μg/m³ Good	7.15μg/m³ Good	32.64ppb Good	0.24ppb Good	2.73ppb Good	0.22ppm Good
Ridgefield, Connecticut	30 Good	2.55μg/m³ Good	6.85μg/m³ Good	32.02ppb Good	0.50ppb Good	1.85ppb Good	0.24ppm Good
Southington, Connecticut	31 Good	2.12μg/m³ Good	7.20μg/m³ Good	32.55ppb Good	0.23ppb Good	2.66ppb Good	0.22ppm Good
Colchester, Connecticut	29 Good	2.35μg/m³ Good	6.56μg/m³ Good	31.19ppb Good	0.26ppb Good	2.57ppb Good	0.21ppm Good
Meriden, Connecticut	30 Good	2.35μg/m³ Good	7.32μg/m³ Good	31.68ppb Good	0.23ppb Good	2.63ppb Good	0.23ppm Good
Naugatuck, Connecticut	29 Good	1.76μg/m³ Good	2.27μg/m³ Good	31.42ppb Good	0.37ppb Good	2.44ppb Good	0.21ppm Good
New Fairfield, Connecticut	29 Good	3.01μg/m³ Good	5.64μg/m³ Good	31.46ppb Good	0.42ppb Good	2.02ppb Good	0.22ppm Good
Plymouth, Connecticut	29 Good	2.15μg/m³ Good	5.26μg/m³ Good	31.08ppb Good	0.23ppb Good	2.60ppb Good	0.20ppm Good
Plainville, Connecticut	29 Good	1.99μg/m³ Good	7.07μg/m³ Good	31.38ppb Good	0.23ppb Good	2.73ppb Good	0.23ppm Good
Oxford, Connecticut	30 Good	1.87μg/m³ Good	3.95μg/m³ Good	31.70ppb Good	0.33ppb Good	2.34ppb Good	0.23ppm Good
Waterbury, Connecticut	29 Good	1.70μg/m³ Good	2.01μg/m³ Good	31.33ppb Good	0.38ppb Good	2.47ppb Good	0.21ppm Good
Wolcott, Connecticut	29 Good	1.73μg/m³ Good	2.35μg/m³ Good	30.84ppb Good	0.37ppb Good	2.60ppb Good	0.21ppm Good
Watertown, Connecticut	29 Good	1.86μg/m³ Good	2.57μg/m³ Good	31.22ppb Good	0.37ppb Good	2.41ppb Good	0.20ppm Good
Avon, Connecticut	28 Good	1.80μg/m³ Good	4.15μg/m³ Good	29.79ppb Good	0.25ppb Good	3.41ppb Good	0.25ppm Good
East Lyme, Connecticut	28 Good	3.05μg/m³ Good	6.24μg/m³ Good	29.96ppb Good	0.27ppb Good	2.50ppb Good	0.22ppm Good
East Hartford, Connecticut	28 Good	1.50μg/m³ Good	3.23μg/m³ Good	29.77ppb Good	0.26ppb Good	2.41ppb Good	0.28ppm Good
Hartford, Connecticut	28 Good	1.31μg/m³ Good	3.01μg/m³ Good	29.77ppb Good	0.26ppb Good	6.16ppb Good	0.30ppm Good
Guilford, Connecticut	28 Good	2.43μg/m³ Good	5.71μg/m³ Good	30.43ppb Good	0.22ppb Good	2.42ppb Good	0.21ppm Good
Wallingford, Connecticut	28 Good	2.27μg/m³ Good	4.61μg/m³ Good	30.03ppb Good	0.22ppb Good	2.62ppb Good	0.22ppm Good
Windsor, Connecticut	28 Good	1.49μg/m³ Good	3.40μg/m³ Good	29.71ppb Good	0.27ppb Good	3.00ppb Good	0.28ppm Good
Ansonia, Connecticut	27 Good	2.25μg/m³ Good	4.64μg/m³ Good	28.63ppb Good	0.32ppb Good	2.27ppb Good	0.24ppm Good
Bloomfield, Connecticut	28 Good	1.44μg/m³ Good	3.40μg/m³ Good	29.61ppb Good	0.26ppb Good	4.39ppb Good	0.28ppm Good
Branford, Connecticut	27 Good	2.38μg/m³ Good	6.29μg/m³ Good	28.66ppb Good	0.21ppb Good	2.37ppb Good	0.22ppm Good
Cheshire, Connecticut	27 Good	2.11μg/m³ Good	3.60μg/m³ Good	29.12ppb Good	0.21ppb Good	2.54ppb Good	0.22ppm Good
Clinton, Connecticut	27 Good	2.12μg/m³ Good	7.46μg/m³ Good	28.85ppb Good	0.24ppb Good	2.38ppb Good	0.22ppm Good
Coventry, Connecticut	28 Good	2.51μg/m³ Good	7.65μg/m³ Good	29.69ppb Good	0.28ppb Good	2.38ppb Good	0.21ppm Good
Shelton, Connecticut	27 Good	2.25μg/m³ Good	4.64μg/m³ Good	28.63ppb Good	0.32ppb Good	2.27ppb Good	0.24ppm Good
Derby, Connecticut	27 Good	2.25μg/m³ Good	4.64μg/m³ Good	28.63ppb Good	0.32ppb Good	2.27ppb Good	0.24ppm Good
East Haven, Connecticut	27 Good	2.38μg/m³ Good	6.29μg/m³ Good	28.66ppb Good	0.21ppb Good	2.37ppb Good	0.22ppm Good
Ellington, Connecticut	28 Good	1.86μg/m³ Good	5.85μg/m³ Good	29.59ppb Good	0.31ppb Good	2.35ppb Good	0.23ppm Good
Glastonbury, Connecticut	27 Good	1.78μg/m³ Good	4.56μg/m³ Good	28.63ppb Good	0.26ppb Good	3.02ppb Good	0.26ppm Good
Mansfield, Connecticut	27 Good	2.52μg/m³ Good	7.73μg/m³ Good	28.78ppb Good	0.28ppb Good	2.28ppb Good	0.21ppm Good

City	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
No results found

0.20ppm

How accurate is Connecticut, USA air quality data?

Air quality and pollutant data for Connecticut, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.

Source: Ambee Data Sources

Air quality levels in US

Check live rankings of places in the USA affected by air pollution.

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Check live rankings of places in the USA with the cleanest air.

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Frequently asked questions

How often is air quality information updated for Connecticut, USA?

The air quality information for Connecticut, USA is updated every hour for accuracy.

What time in the last 24 hours was the air quality in Connecticut, USA at its worst?

In the past 24 hours, the air quality in Connecticut, USA was at its worst at 10:00:00 on 2025-07-12.

When did Connecticut, USA experience the best air quality in the last 24 hours?

In the last 24 hours, the best air quality in Connecticut, USA was observed at 05:00:00 on 2025-07-13.

What is the AQI in Connecticut, USA right now?

As of now, the AQI in Connecticut, USA is 27, indicating Good conditions.

What is the most common type of pollution in Connecticut, USA?

Connecticut, USA air has the highest levels of O3.

What should I do in case of poor air quality in Connecticut, USA?

Poor air quality in Connecticut, USA means it's advisable to stay indoors and wear a mask for your protection.

What is the PM_2.5 level in Connecticut, USA at the moment?

PM_2.5 levels in Connecticut, USA are currently 3.188 μg/m³.

What is the PM₁₀ level in Connecticut, USA at the moment?

The PM₁₀ concentration in Connecticut, USA is 11.088 μg/m³ at the moment.

What is the carbon monoxide (CO) level in Connecticut, USA at the moment?

The current carbon monoxide (CO) concentration in Connecticut, USA is 0.246 ppm.

What is the sulfur dioxide (SO₂) level in Connecticut, USA at the moment?

Currently, Connecticut, USA has a sulfur dioxide (SO₂) concentration of 1.103 ppb.

What is the ozone (O₃) level in Connecticut, USA at the moment?

The current ozone (O₃) level in Connecticut, USA at the moment is 29.194 ppm.

What is the nitrogen dioxide (NO₂) level in Connecticut, USA at the moment?

Nitrogen dioxide (NO₂) level in Connecticut, USA at the moment is 2.808 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-11T17:00:00.000Z	44 \| good	7.812 \| good	12.111 \| good	38.901 \| good	0.15 \| good	9.154 \| good	0.302 \| good
2025-07-11T18:00:00.000Z	44 \| good	8.275 \| good	12.969 \| good	44.463 \| good	0.15 \| good	6.515 \| good	0.325 \| good
2025-07-11T19:00:00.000Z	45 \| good	8.454 \| good	14.746 \| good	48.679 \| good	0.323 \| good	7.732 \| good	0.322 \| good
2025-07-11T20:00:00.000Z	45 \| good	8.208 \| good	14.833 \| good	49.374 \| good	0.296 \| good	6.231 \| good	0.264 \| good
2025-07-11T21:00:00.000Z	50 \| good	7.798 \| good	13.964 \| good	54.097 \| good	0.442 \| good	5.323 \| good	0.271 \| good
2025-07-11T22:00:00.000Z	49 \| good	7.505 \| good	13.038 \| good	53.215 \| good	0.422 \| good	5.255 \| good	0.28 \| good
2025-07-11T23:00:00.000Z	48 \| good	7.04 \| good	12.106 \| good	51.787 \| good	0.377 \| good	6.205 \| good	0.264 \| good
2025-07-12T00:00:00.000Z	44 \| good	6.251 \| good	10.349 \| good	47.532 \| good	0.172 \| good	6.17 \| good	0.264 \| good
2025-07-12T01:00:00.000Z	41 \| good	5.873 \| good	10.318 \| good	43.835 \| good	0.16 \| good	6.109 \| good	0.286 \| good
2025-07-12T02:00:00.000Z	40 \| good	5.75 \| good	10.251 \| good	42.983 \| good	0.657 \| good	5.822 \| good	0.279 \| good
2025-07-12T03:00:00.000Z	33 \| good	6.283 \| good	28.353 \| good	33.011 \| good	0.821 \| good	6.436 \| good	0.223 \| good
2025-07-12T04:00:00.000Z	34 \| good	5.732 \| good	10.158 \| good	36.605 \| good	0.653 \| good	4.198 \| good	0.257 \| good
2025-07-12T05:00:00.000Z	38 \| good	5.542 \| good	9.081 \| good	41.269 \| good	1.169 \| good	3.941 \| good	0.236 \| good
2025-07-12T06:00:00.000Z	34 \| good	5.475 \| good	8.223 \| good	37.076 \| good	1.143 \| good	3.542 \| good	0.229 \| good
2025-07-12T07:00:00.000Z	33 \| good	5.531 \| good	8.279 \| good	35.784 \| good	0.291 \| good	3.23 \| good	0.236 \| good
2025-07-12T08:00:00.000Z	33 \| good	5.609 \| good	8.273 \| good	33.06 \| good	0.286 \| good	3.891 \| good	0.244 \| good
2025-07-12T09:00:00.000Z	33 \| good	5.585 \| good	8.199 \| good	32.514 \| good	0.368 \| good	4.569 \| good	0.222 \| good
2025-07-12T10:00:00.000Z	33 \| good	5.567 \| good	9.05 \| good	33.752 \| good	0.296 \| good	4.462 \| good	0.237 \| good
2025-07-12T11:00:00.000Z	33 \| good	5.58 \| good	8.243 \| good	34.66 \| good	0.211 \| good	5.397 \| good	0.237 \| good
2025-07-12T12:00:00.000Z	33 \| good	5.873 \| good	9.204 \| good	33.447 \| good	0.153 \| good	4.381 \| good	0.265 \| good
2025-07-12T13:00:00.000Z	33 \| good	6.383 \| good	9.229 \| good	32.521 \| good	0.213 \| good	5.361 \| good	0.302 \| good
2025-07-12T14:00:00.000Z	38 \| good	6.816 \| good	10.086 \| good	32.732 \| good	0.211 \| good	7.129 \| good	0.265 \| good
2025-07-12T15:00:00.000Z	38 \| good	7.248 \| good	10.906 \| good	36.016 \| good	0.184 \| good	5.342 \| good	0.272 \| good
2025-07-12T16:00:00.000Z	44 \| good	7.747 \| good	11.764 \| good	40.024 \| good	0.27 \| good	5.858 \| good	0.265 \| good
2025-07-12T17:00:00.000Z	44 \| good	7.821 \| good	11.764 \| good	41.344 \| good	0.416 \| good	3.485 \| good	0.265 \| good
2025-07-12T18:00:00.000Z	44 \| good	7.673 \| good	11.839 \| good	42.387 \| good	0.361 \| good	3.519 \| good	0.273 \| good
2025-07-12T19:00:00.000Z	39 \| good	7.157 \| good	11.777 \| good	42.031 \| good	0.385 \| good	3.299 \| good	0.28 \| good
2025-07-12T20:00:00.000Z	38 \| good	5.792 \| good	10.976 \| good	40.712 \| good	0.283 \| good	3.515 \| good	0.265 \| good
2025-07-12T21:00:00.000Z	39 \| good	4.701 \| good	8.354 \| good	41.939 \| good	0.417 \| good	3.427 \| good	0.271 \| good
2025-07-12T22:00:00.000Z	44 \| good	4.359 \| good	8.311 \| good	46.854 \| good	0.472 \| good	3.551 \| good	0.279 \| good
2025-07-12T23:00:00.000Z	41 \| good	4.231 \| good	8.161 \| good	44.402 \| good	0.272 \| good	4.212 \| good	0.252 \| good
2025-07-13T00:00:00.000Z	38 \| good	4.259 \| good	8.143 \| good	40.74 \| good	0.376 \| good	4.809 \| good	0.279 \| good
2025-07-13T01:00:00.000Z	37 \| good	4.333 \| good	8.106 \| good	40.452 \| good	0.467 \| good	5.481 \| good	0.279 \| good
2025-07-13T02:00:00.000Z	35 \| good	4.527 \| good	8.139 \| good	37.55 \| good	0.408 \| good	5.826 \| good	0.295 \| good
2025-07-13T03:00:00.000Z	27 \| good	4.266 \| good	8.303 \| good	28.531 \| good	0.468 \| good	5.939 \| good	0.284 \| good
2025-07-13T04:00:00.000Z	30 \| good	3.873 \| good	7.188 \| good	32.167 \| good	0.625 \| good	4.636 \| good	0.292 \| good
2025-07-13T05:00:00.000Z	25 \| good	3.762 \| good	7.332 \| good	27.263 \| good	1.135 \| good	4.691 \| good	0.283 \| good
2025-07-13T06:00:00.000Z	28 \| good	3.974 \| good	7.057 \| good	29.626 \| good	1.153 \| good	3.017 \| good	0.261 \| good
2025-07-13T07:00:00.000Z	29 \| good	3.465 \| good	6.19 \| good	30.654 \| good	1.114 \| good	3.211 \| good	0.241 \| good
2025-07-13T08:00:00.000Z	28 \| good	3.508 \| good	6.082 \| good	30.358 \| good	1.142 \| good	2.892 \| good	0.241 \| good
2025-07-13T09:00:00.000Z	28 \| good	3.41 \| good	5.944 \| good	29.613 \| good	0.839 \| good	2.815 \| good	0.165 \| good
2025-07-13T10:00:00.000Z	30 \| good	3.208 \| good	5.161 \| good	32.004 \| good	0.357 \| good	2.026 \| good	0.175 \| good
2025-07-13T11:00:00.000Z	30 \| good	2.331 \| good	4.174 \| good	31.739 \| good	0.28 \| good	2.467 \| good	0.207 \| good
2025-07-13T12:00:00.000Z	31 \| good	1.64 \| good	2.378 \| good	32.958 \| good	0.328 \| good	2.884 \| good	0.207 \| good
2025-07-13T13:00:00.000Z	30 \| good	1.624 \| good	2.316 \| good	31.636 \| good	0.312 \| good	3.368 \| good	0.207 \| good
2025-07-13T14:00:00.000Z	29 \| good	1.654 \| good	2.385 \| good	31.137 \| good	0.329 \| good	2.928 \| good	0.208 \| good
2025-07-13T15:00:00.000Z	29 \| good	1.802 \| good	2.365 \| good	31.285 \| good	0.377 \| good	2.43 \| good	0.208 \| good
2025-07-13T16:00:00.000Z	29 \| good	1.903 \| good	3.259 \| good	31.019 \| good	0.157 \| good	2.632 \| good	0.239 \| good
2025-07-13T16:00:00.000Z	28 \| good	2.409 \| good	6.574 \| good	30.407 \| good	0.207 \| good	2.778 \| good	0.27 \| good
2025-07-13T09:00:00.000Z	23 \| good	4.418 \| good	19.213 \| good	24.655 \| good	0.228 \| good	2.114 \| good	0.119 \| good
2025-07-13T10:00:00.000Z	22 \| good	3.745 \| good	16.472 \| good	23.137 \| good	0.213 \| good	2.131 \| good	0.118 \| good
2025-07-13T11:00:00.000Z	20 \| good	3.139 \| good	13.611 \| good	22.263 \| good	0.199 \| good	2.148 \| good	0.117 \| good
2025-07-13T12:00:00.000Z	19 \| good	2.194 \| good	8.803 \| good	20.363 \| good	0.185 \| good	2.165 \| good	0.115 \| good
2025-07-13T13:00:00.000Z	21 \| good	1.839 \| good	7.598 \| good	22.962 \| good	0.216 \| good	2.155 \| good	0.118 \| good
2025-07-13T14:00:00.000Z	24 \| good	1.016 \| good	3.821 \| good	25.793 \| good	0.247 \| good	2.145 \| good	0.121 \| good
2025-07-13T15:00:00.000Z	30 \| good	1.577 \| good	6.59 \| good	31.56 \| good	0.278 \| good	2.135 \| good	0.124 \| good
2025-07-13T16:00:00.000Z	32 \| good	2.194 \| good	8.87 \| good	34.69 \| good	0.27 \| good	1.852 \| good	0.124 \| good
2025-07-13T17:00:00.000Z	35 \| good	1.58 \| good	6.587 \| good	37.749 \| good	0.262 \| good	1.569 \| good	0.125 \| good
2025-07-13T18:00:00.000Z	36 \| good	2.229 \| good	9.344 \| good	38.959 \| good	0.254 \| good	1.287 \| good	0.125 \| good
2025-07-13T19:00:00.000Z	37 \| good	2.486 \| good	9.971 \| good	40.494 \| good	0.243 \| good	1.323 \| good	0.125 \| good
2025-07-13T20:00:00.000Z	39 \| good	2.06 \| good	8.614 \| good	41.982 \| good	0.231 \| good	1.359 \| good	0.126 \| good
2025-07-13T21:00:00.000Z	40 \| good	2.362 \| good	9.614 \| good	43.155 \| good	0.22 \| good	1.395 \| good	0.126 \| good
2025-07-13T22:00:00.000Z	40 \| good	2.125 \| good	8.847 \| good	42.714 \| good	0.25 \| good	2.113 \| good	0.132 \| good
2025-07-13T23:00:00.000Z	37 \| good	1.526 \| good	6.315 \| good	39.986 \| good	0.28 \| good	2.832 \| good	0.138 \| good
2025-07-14T00:00:00.000Z	31 \| good	3.224 \| good	13.726 \| good	33.256 \| good	0.311 \| good	3.551 \| good	0.145 \| good
2025-07-14T01:00:00.000Z	26 \| good	3.562 \| good	15.817 \| good	28.49 \| good	0.373 \| good	3.976 \| good	0.148 \| good
2025-07-14T02:00:00.000Z	27 \| good	5.154 \| good	22.305 \| good	24.953 \| good	0.436 \| good	4.402 \| good	0.15 \| good
2025-07-14T03:00:00.000Z	22 \| good	4.406 \| good	19.243 \| good	22.901 \| good	0.498 \| good	4.827 \| good	0.153 \| good
2025-07-14T04:00:00.000Z	22 \| good	4.447 \| good	19.093 \| good	22.757 \| good	0.507 \| good	4.647 \| good	0.152 \| good
2025-07-14T05:00:00.000Z	22 \| good	4.198 \| good	18.445 \| good	22.323 \| good	0.516 \| good	4.467 \| good	0.15 \| good
2025-07-14T06:00:00.000Z	22 \| good	3.544 \| good	15.85 \| good	22.354 \| good	0.524 \| good	4.287 \| good	0.148 \| good
2025-07-14T07:00:00.000Z	22 \| good	3.663 \| good	15.955 \| good	20.919 \| good	0.486 \| good	4.263 \| good	0.148 \| good
2025-07-14T08:00:00.000Z	22 \| good	3.558 \| good	15.877 \| good	20.529 \| good	0.448 \| good	4.239 \| good	0.148 \| good
2025-07-14T09:00:00.000Z	19 \| good	2.595 \| good	10.471 \| good	20.686 \| good	0.41 \| good	4.215 \| good	0.148 \| good
2025-07-14T10:00:00.000Z	19 \| good	2.543 \| good	10.271 \| good	19.782 \| good	0.39 \| good	3.971 \| good	0.144 \| good
2025-07-14T11:00:00.000Z	19 \| good	1.742 \| good	7.182 \| good	19.773 \| good	0.369 \| good	3.727 \| good	0.139 \| good
2025-07-14T12:00:00.000Z	19 \| good	1.507 \| good	6.344 \| good	20.915 \| good	0.349 \| good	3.483 \| good	0.135 \| good
2025-07-14T13:00:00.000Z	21 \| good	1.724 \| good	7.126 \| good	23.186 \| good	0.354 \| good	3.291 \| good	0.137 \| good
2025-07-14T14:00:00.000Z	27 \| good	1.803 \| good	7.484 \| good	28.631 \| good	0.358 \| good	3.098 \| good	0.138 \| good
2025-07-14T15:00:00.000Z	30 \| good	3.161 \| good	13.488 \| good	32.166 \| good	0.363 \| good	2.905 \| good	0.14 \| good
2025-07-14T16:00:00.000Z	34 \| good	3.918 \| good	17.113 \| good	37.067 \| good	0.39 \| good	2.41 \| good	0.142 \| good
2025-07-14T17:00:00.000Z	42 \| good	5.815 \| good	25.133 \| good	44.987 \| good	0.416 \| good	1.914 \| good	0.144 \| good
2025-07-14T18:00:00.000Z	50 \| good	6.557 \| good	29.391 \| good	53.963 \| good	0.443 \| good	1.418 \| good	0.146 \| good
2025-07-14T19:00:00.000Z	58 \| moderate	6.787 \| good	29.54 \| good	57.422 \| fine	0.428 \| good	1.899 \| good	0.152 \| good
2025-07-14T20:00:00.000Z	77 \| moderate	8.073 \| good	35.575 \| good	63.272 \| fine	0.413 \| good	2.38 \| good	0.158 \| good
2025-07-14T21:00:00.000Z	87 \| moderate	9.549 \| good	42.256 \| good	66.284 \| fine	0.398 \| good	2.861 \| good	0.163 \| good
2025-07-14T22:00:00.000Z	74 \| moderate	10.837 \| good	47.695 \| good	61.842 \| fine	0.489 \| good	4.234 \| good	0.18 \| good
2025-07-14T23:00:00.000Z	71 \| moderate	7.946 \| good	34.871 \| good	60.633 \| fine	0.581 \| good	5.607 \| good	0.197 \| good
2025-07-15T00:00:00.000Z	64 \| moderate	8.884 \| good	39.221 \| good	58.927 \| fine	0.672 \| good	6.98 \| good	0.214 \| good
2025-07-15T01:00:00.000Z	50 \| good	9.475 \| good	42.166 \| good	54.273 \| good	0.832 \| good	7.733 \| good	0.217 \| good
2025-07-15T02:00:00.000Z	49 \| good	9.373 \| good	41.698 \| good	43.594 \| good	0.991 \| good	8.485 \| good	0.22 \| good
2025-07-15T03:00:00.000Z	44 \| good	7.563 \| good	33.296 \| good	34.958 \| good	1.15 \| good	9.237 \| good	0.223 \| good
2025-07-15T04:00:00.000Z	38 \| good	6.862 \| good	30.342 \| good	30.017 \| good	1.369 \| good	9.72 \| good	0.222 \| good
2025-07-15T05:00:00.000Z	38 \| good	7.487 \| good	33.172 \| good	29.365 \| good	1.587 \| good	10.204 \| good	0.222 \| good
2025-07-15T06:00:00.000Z	52 \| moderate	10.358 \| good	11.086 \| good	21.96 \| good	1.806 \| good	10.69 \| good	0.221 \| good
2025-07-15T07:00:00.000Z	54 \| moderate	11.437 \| good	50.618 \| good	29.286 \| good	1.66 \| good	10.058 \| good	0.226 \| good
2025-07-15T08:00:00.000Z	62 \| moderate	15.189 \| fine	67.76 \| fine	27.476 \| good	1.515 \| good	9.429 \| good	0.232 \| good

Real-time air quality index in Connecticut, USA today

Major air pollutants in Connecticut, USA

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Connecticut, USA air quality forecast and history

Get reliable air quality data to drive your business

Connecticut, USA air quality map: Stay updated on AQI near you

Air quality in cities of Connecticut, USA

Air quality in nearby states

New York, USA

Rhode Island, USA

Massachusetts, USA

New Jersey, USA

New Hampshire, USA

Vermont, USA

How accurate is Connecticut, USA air quality data?

Air quality levels in US

Frequently asked questions

How often is air quality information updated for Connecticut, USA?

What time in the last 24 hours was the air quality in Connecticut, USA at its worst?

When did Connecticut, USA experience the best air quality in the last 24 hours?

What is the AQI in Connecticut, USA right now?

What is the most common type of pollution in Connecticut, USA?

What should I do in case of poor air quality in Connecticut, USA?

What is the PM2.5 level in Connecticut, USA at the moment?

What is the PM10 level in Connecticut, USA at the moment?

What is the carbon monoxide (CO) level in Connecticut, USA at the moment?

What is the sulfur dioxide (SO2) level in Connecticut, USA at the moment?

What is the ozone (O3) level in Connecticut, USA at the moment?

What is the nitrogen dioxide (NO2) level in Connecticut, USA at the moment?

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

What is the PM_2.5 level in Connecticut, USA at the moment?

What is the PM₁₀ level in Connecticut, USA at the moment?

What is the sulfur dioxide (SO₂) level in Connecticut, USA at the moment?

What is the ozone (O₃) level in Connecticut, USA at the moment?

What is the nitrogen dioxide (NO₂) level in Connecticut, USA at the moment?