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

The PM10 concentration in Connecticut, USA is 10.141 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 0.229 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 26.623 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 5.642 ppb.

Live air quality index in Connecticut, USA today

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

PM2.5 levels in Connecticut, USA are currently 3.105 μg/m3.

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)

3.10 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

10.14 μg/m³

155

255

425

605+

Ozone (O₃)

26.62 ppb

201

201+

Sulfur Dioxide (SO₂)

0.23 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.64 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.14 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Looks like we don't have this data available right now

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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
2026-02-10T02:00:00.000Z	72 \| moderate	13.636 \| fine	96.884 \| fine	31.762 \| good	0.265 \| good	10.913 \| good	0.31 \| good
2026-02-10T03:00:00.000Z	74 \| moderate	14.32 \| fine	101.825 \| fine	30.875 \| good	0.277 \| good	17.32 \| good	0.31 \| good
2026-02-10T04:00:00.000Z	56 \| moderate	10.282 \| good	66.326 \| fine	31.91 \| good	0.272 \| good	20.274 \| good	0.331 \| good
2026-02-10T05:00:00.000Z	44 \| good	7.873 \| good	44.486 \| good	30.497 \| good	0.237 \| good	20.608 \| good	0.353 \| good
2026-02-10T06:00:00.000Z	38 \| good	7.346 \| good	40.807 \| good	28.442 \| good	0.287 \| good	19.042 \| good	0.273 \| good
2026-02-10T07:00:00.000Z	39 \| good	7.441 \| good	41.648 \| good	26.603 \| good	0.332 \| good	19.326 \| good	0.305 \| good
2026-02-10T08:00:00.000Z	38 \| good	7.205 \| good	37.706 \| good	21.253 \| good	0.58 \| good	20.378 \| good	0.261 \| good
2026-02-10T09:00:00.000Z	33 \| good	6.252 \| good	26.628 \| good	23.568 \| good	0.297 \| good	20.162 \| good	0.265 \| good
2026-02-10T10:00:00.000Z	38 \| good	7.036 \| good	32.643 \| good	21.467 \| good	0.321 \| good	21.33 \| good	0.265 \| good
2026-02-10T11:00:00.000Z	44 \| good	8.167 \| good	43.031 \| good	14.281 \| good	0.294 \| good	23.191 \| good	0.281 \| good
2026-02-10T12:00:00.000Z	49 \| good	8.882 \| good	49.247 \| good	14.87 \| good	0.289 \| good	28.006 \| good	0.347 \| good
2026-02-10T13:00:00.000Z	49 \| good	8.958 \| good	49.831 \| good	18.407 \| good	0.31 \| good	28.78 \| good	0.371 \| good
2026-02-10T14:00:00.000Z	58 \| moderate	11.433 \| good	69.968 \| fine	15.87 \| good	0.45 \| good	25.818 \| good	0.34 \| good
2026-02-10T15:00:00.000Z	52 \| moderate	10.073 \| good	57.177 \| fine	26.25 \| good	0.412 \| good	19.501 \| good	0.304 \| good
2026-02-10T16:00:00.000Z	52 \| moderate	10.044 \| good	56.522 \| fine	25.609 \| good	0.518 \| good	16.408 \| good	0.369 \| good
2026-02-10T17:00:00.000Z	49 \| good	9.432 \| good	49.624 \| good	27.58 \| good	0.502 \| good	18.114 \| good	0.377 \| good
2026-02-10T18:00:00.000Z	44 \| good	8.047 \| good	42.825 \| good	31.686 \| good	0.602 \| good	16.864 \| good	0.385 \| good
2026-02-10T19:00:00.000Z	38 \| good	7.442 \| good	35.774 \| good	33.122 \| good	0.707 \| good	20.654 \| good	0.34 \| good
2026-02-10T20:00:00.000Z	44 \| good	7.519 \| good	36.628 \| good	30.372 \| good	1.147 \| good	20.655 \| good	0.425 \| good
2026-02-10T21:00:00.000Z	38 \| good	7.499 \| good	35.241 \| good	22.701 \| good	0.987 \| good	21.04 \| good	0.425 \| good
2026-02-10T22:00:00.000Z	44 \| good	8.031 \| good	39.714 \| good	19.091 \| good	0.847 \| good	22.488 \| good	0.437 \| good
2026-02-10T23:00:00.000Z	49 \| good	9.443 \| good	42.128 \| good	29.672 \| good	0.623 \| good	27.854 \| good	0.352 \| good
2026-02-11T00:00:00.000Z	52 \| moderate	9.771 \| good	39.317 \| good	30.372 \| good	0.774 \| good	26.954 \| good	0.329 \| good
2026-02-11T01:00:00.000Z	52 \| moderate	10.077 \| good	34.868 \| good	25.53 \| good	1.147 \| good	28.709 \| good	0.287 \| good
2026-02-11T02:00:00.000Z	52 \| moderate	10.009 \| good	30.473 \| good	17.993 \| good	0.808 \| good	28.945 \| good	0.244 \| good
2026-02-11T03:00:00.000Z	52 \| moderate	10.161 \| good	26.98 \| good	25.973 \| good	0.734 \| good	22.308 \| good	0.26 \| good
2026-02-11T04:00:00.000Z	54 \| moderate	10.685 \| good	23.488 \| good	26.612 \| good	0.685 \| good	24.615 \| good	0.297 \| good
2026-02-11T05:00:00.000Z	56 \| moderate	11.895 \| good	22.545 \| good	23.812 \| good	0.507 \| good	23.527 \| good	0.275 \| good
2026-02-11T06:00:00.000Z	60 \| moderate	13.628 \| fine	23.571 \| good	15.048 \| good	0.374 \| good	25.639 \| good	0.27 \| good
2026-02-11T07:00:00.000Z	60 \| moderate	13.742 \| fine	24.203 \| good	22.781 \| good	0.392 \| good	32.805 \| good	0.302 \| good
2026-02-11T08:00:00.000Z	66 \| moderate	16.632 \| fine	24.618 \| good	6.866 \| good	0.331 \| good	32.205 \| good	0.32 \| good
2026-02-11T09:00:00.000Z	67 \| moderate	18.134 \| fine	25.481 \| good	11.551 \| good	0.264 \| good	29.131 \| good	0.335 \| good
2026-02-11T10:00:00.000Z	69 \| moderate	19.287 \| fine	26.506 \| good	13.601 \| good	0.334 \| good	28.238 \| good	0.361 \| good
2026-02-11T11:00:00.000Z	71 \| moderate	20.42 \| fine	27.544 \| good	15.162 \| good	0.387 \| good	32.879 \| good	0.376 \| good
2026-02-11T12:00:00.000Z	75 \| moderate	21.899 \| fine	28.746 \| good	11.832 \| good	0.436 \| good	27.232 \| good	0.493 \| good
2026-02-11T13:00:00.000Z	75 \| moderate	21.952 \| fine	28.913 \| good	21.225 \| good	0.539 \| good	28.763 \| good	0.488 \| good
2026-02-11T14:00:00.000Z	82 \| moderate	25.935 \| fine	33.614 \| good	16.603 \| good	0.415 \| good	22.042 \| good	0.529 \| good
2026-02-11T15:00:00.000Z	86 \| moderate	27.808 \| fine	35.682 \| good	21.305 \| good	0.475 \| good	19.141 \| good	0.42 \| good
2026-02-11T16:00:00.000Z	84 \| moderate	26.837 \| fine	34.436 \| good	19.732 \| good	0.595 \| good	8.227 \| good	1.576 \| good
2026-02-11T17:00:00.000Z	81 \| moderate	24.972 \| fine	34.101 \| good	22.596 \| good	0.431 \| good	6.472 \| good	0.283 \| good
2026-02-11T18:00:00.000Z	73 \| moderate	21.447 \| fine	31.441 \| good	25.527 \| good	0.328 \| good	6.842 \| good	0.231 \| good
2026-02-11T19:00:00.000Z	62 \| moderate	15.45 \| fine	24.495 \| good	28.262 \| good	0.248 \| good	6.822 \| good	0.231 \| good
2026-02-11T20:00:00.000Z	54 \| moderate	10.738 \| good	20.373 \| good	25.923 \| good	0.184 \| good	5.094 \| good	0.187 \| good
2026-02-11T21:00:00.000Z	44 \| good	7.954 \| good	17.193 \| good	27.59 \| good	0.181 \| good	4.401 \| good	0.16 \| good
2026-02-11T22:00:00.000Z	27 \| good	5.481 \| good	15.993 \| good	28.337 \| good	0.189 \| good	4.319 \| good	0.123 \| good
2026-02-11T23:00:00.000Z	28 \| good	3.998 \| good	13.98 \| good	29.622 \| good	0.149 \| good	5.247 \| good	0.16 \| good
2026-02-12T00:00:00.000Z	25 \| good	3.298 \| good	13.813 \| good	27.269 \| good	0.194 \| good	5.57 \| good	0.123 \| good
2026-02-12T01:00:00.000Z	25 \| good	3.105 \| good	10.141 \| good	26.623 \| good	0.229 \| good	5.642 \| good	0.141 \| good
2026-02-12T02:00:00.000Z	52 \| moderate	9.53 \| good	42.481 \| good	27.021 \| good	0.436 \| good	3.246 \| good	0.173 \| good
2026-02-12T03:00:00.000Z	52 \| moderate	10.268 \| good	45.494 \| good	25.287 \| good	0.493 \| good	3.018 \| good	0.175 \| good
2026-02-12T04:00:00.000Z	56 \| moderate	11.729 \| good	52.041 \| good	28.632 \| good	0.485 \| good	2.49 \| good	0.172 \| good
2026-02-12T05:00:00.000Z	62 \| moderate	15.419 \| fine	69.167 \| fine	36.184 \| good	0.477 \| good	1.963 \| good	0.169 \| good
2026-02-12T06:00:00.000Z	58 \| moderate	13.183 \| fine	59.387 \| fine	36.156 \| good	0.469 \| good	1.435 \| good	0.166 \| good
2026-02-12T07:00:00.000Z	49 \| good	9.395 \| good	41.875 \| good	34.99 \| good	0.42 \| good	1.323 \| good	0.162 \| good
2026-02-12T08:00:00.000Z	49 \| good	8.994 \| good	39.813 \| good	33.218 \| good	0.371 \| good	1.211 \| good	0.158 \| good
2026-02-12T09:00:00.000Z	44 \| good	8.486 \| good	37.381 \| good	30.79 \| good	0.322 \| good	1.099 \| good	0.154 \| good
2026-02-12T10:00:00.000Z	44 \| good	7.84 \| good	34.461 \| good	29.722 \| good	0.318 \| good	1.318 \| good	0.153 \| good
2026-02-12T11:00:00.000Z	28 \| good	5.234 \| good	22.577 \| good	29.965 \| good	0.315 \| good	1.537 \| good	0.151 \| good
2026-02-12T12:00:00.000Z	30 \| good	2.868 \| good	12.383 \| good	31.604 \| good	0.311 \| good	1.756 \| good	0.15 \| good
2026-02-12T13:00:00.000Z	31 \| good	2.249 \| good	9.117 \| good	33.865 \| good	0.317 \| good	1.567 \| good	0.148 \| good
2026-02-12T14:00:00.000Z	33 \| good	2.67 \| good	11.027 \| good	35.846 \| good	0.322 \| good	1.378 \| good	0.146 \| good
2026-02-12T15:00:00.000Z	33 \| good	3.388 \| good	14.689 \| good	35.66 \| good	0.327 \| good	1.189 \| good	0.144 \| good
2026-02-12T16:00:00.000Z	34 \| good	2.822 \| good	11.684 \| good	36.528 \| good	0.324 \| good	1.104 \| good	0.144 \| good
2026-02-12T17:00:00.000Z	35 \| good	1.463 \| good	5.857 \| good	37.784 \| good	0.321 \| good	1.018 \| good	0.143 \| good
2026-02-12T18:00:00.000Z	36 \| good	5.432 \| good	23.397 \| good	39.076 \| good	0.318 \| good	0.932 \| good	0.142 \| good
2026-02-12T19:00:00.000Z	36 \| good	4.498 \| good	19.548 \| good	39.207 \| good	0.317 \| good	1.13 \| good	0.143 \| good
2026-02-12T20:00:00.000Z	36 \| good	3.568 \| good	15.465 \| good	39.273 \| good	0.317 \| good	1.327 \| good	0.144 \| good
2026-02-12T21:00:00.000Z	37 \| good	1.295 \| good	5.457 \| good	40.109 \| good	0.317 \| good	1.525 \| good	0.145 \| good
2026-02-12T22:00:00.000Z	37 \| good	2.973 \| good	12.328 \| good	40.211 \| good	0.318 \| good	2.129 \| good	0.15 \| good
2026-02-12T23:00:00.000Z	34 \| good	1.757 \| good	7.259 \| good	37.482 \| good	0.32 \| good	2.734 \| good	0.155 \| good
2026-02-13T00:00:00.000Z	33 \| good	2.562 \| good	10.394 \| good	35.771 \| good	0.322 \| good	3.338 \| good	0.16 \| good
2026-02-13T01:00:00.000Z	32 \| good	3.219 \| good	13.259 \| good	35.03 \| good	0.328 \| good	3.18 \| good	0.16 \| good
2026-02-13T02:00:00.000Z	33 \| good	4.655 \| good	20.321 \| good	35.745 \| good	0.333 \| good	3.022 \| good	0.16 \| good
2026-02-13T03:00:00.000Z	33 \| good	5.967 \| good	26.066 \| good	35.528 \| good	0.338 \| good	2.863 \| good	0.16 \| good
2026-02-13T04:00:00.000Z	44 \| good	8.208 \| good	36.434 \| good	34.638 \| good	0.319 \| good	2.55 \| good	0.157 \| good
2026-02-13T05:00:00.000Z	49 \| good	9.223 \| good	40.821 \| good	33.402 \| good	0.301 \| good	2.237 \| good	0.155 \| good
2026-02-13T06:00:00.000Z	41 \| good	3.664 \| good	3.946 \| good	43.593 \| good	0.283 \| good	1.922 \| good	0.152 \| good
2026-02-13T07:00:00.000Z	30 \| good	3.322 \| good	14.44 \| good	32.463 \| good	0.274 \| good	1.783 \| good	0.151 \| good
2026-02-13T08:00:00.000Z	28 \| good	3.059 \| good	12.867 \| good	30.38 \| good	0.265 \| good	1.643 \| good	0.15 \| good
2026-02-13T09:00:00.000Z	26 \| good	3.682 \| good	16.286 \| good	27.87 \| good	0.256 \| good	1.503 \| good	0.149 \| good
2026-02-13T10:00:00.000Z	33 \| good	6.294 \| good	27.879 \| good	25.852 \| good	0.275 \| good	1.953 \| good	0.152 \| good
2026-02-13T11:00:00.000Z	33 \| good	6.319 \| good	27.695 \| good	24.899 \| good	0.295 \| good	2.403 \| good	0.156 \| good
2026-02-13T12:00:00.000Z	38 \| good	3.602 \| good	3.761 \| good	40.666 \| good	0.315 \| good	2.854 \| good	0.16 \| good
2026-02-13T13:00:00.000Z	38 \| good	4.185 \| good	4.395 \| good	40.846 \| good	0.345 \| good	2.675 \| good	0.163 \| good
2026-02-13T14:00:00.000Z	38 \| good	4.458 \| good	4.706 \| good	41.027 \| good	0.376 \| good	2.495 \| good	0.165 \| good
2026-02-13T15:00:00.000Z	38 \| good	3.786 \| good	3.99 \| good	41.207 \| good	0.406 \| good	2.316 \| good	0.168 \| good
2026-02-13T16:00:00.000Z	37 \| good	0.413 \| good	1.662 \| good	39.66 \| good	0.389 \| good	2.098 \| good	0.166 \| good
2026-02-13T17:00:00.000Z	37 \| good	0.602 \| good	2.182 \| good	39.701 \| good	0.371 \| good	1.88 \| good	0.163 \| good
2026-02-13T18:00:00.000Z	40 \| good	3.226 \| good	3.359 \| good	42.668 \| good	0.353 \| good	1.661 \| good	0.161 \| good
2026-02-13T19:00:00.000Z	40 \| good	3.224 \| good	3.337 \| good	42.507 \| good	0.35 \| good	2.006 \| good	0.163 \| good
2026-02-13T20:00:00.000Z	39 \| good	3.343 \| good	3.439 \| good	42.346 \| good	0.346 \| good	2.352 \| good	0.166 \| good
2026-02-13T21:00:00.000Z	39 \| good	3.789 \| good	3.879 \| good	42.186 \| good	0.343 \| good	2.697 \| good	0.168 \| good
2026-02-13T22:00:00.000Z	33 \| good	6.285 \| good	6.436 \| good	34.635 \| good	0.617 \| good	9.396 \| good	0.227 \| good
2026-02-13T23:00:00.000Z	54 \| moderate	10.866 \| good	11.239 \| good	27.085 \| good	0.891 \| good	16.094 \| good	0.287 \| good
2026-02-14T00:00:00.000Z	64 \| moderate	15.653 \| fine	16.203 \| good	19.534 \| good	1.165 \| good	22.792 \| good	0.347 \| good
2026-02-14T01:00:00.000Z	44 \| good	8.365 \| good	36.711 \| good	24.562 \| good	1.229 \| good	22.581 \| good	0.359 \| 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
Plainfield, Connecticut	27 Good	2.54μg/m³ Good	9.61μg/m³ Good	29.27ppb Good	0.28ppb Good	5.63ppb Good	0.22ppm Good
Canton, Connecticut	26 Good	3.14μg/m³ Good	8.51μg/m³ Good	27.70ppb Good	0.25ppb Good	4.53ppb Good	0.12ppm Good
Enfield, Connecticut	26 Good	2.75μg/m³ Good	7.77μg/m³ Good	27.65ppb Good	0.29ppb Good	4.63ppb Good	0.12ppm Good
Griswold, Connecticut	26 Good	2.72μg/m³ Good	8.67μg/m³ Good	28.05ppb Good	0.28ppb Good	4.93ppb Good	0.21ppm Good
New London, Connecticut	27 Good	4.79μg/m³ Good	7.99μg/m³ Good	27.61ppb Good	0.27ppb Good	5.66ppb Good	0.20ppm Good
Groton, Connecticut	27 Good	4.79μg/m³ Good	7.99μg/m³ Good	27.61ppb Good	0.27ppb Good	5.66ppb Good	0.20ppm Good
Killingly, Connecticut	26 Good	2.37μg/m³ Good	9.66μg/m³ Good	28.45ppb Good	0.35ppb Good	5.58ppb Good	0.23ppm Good
Ledyard, Connecticut	26 Good	4.23μg/m³ Good	8.19μg/m³ Good	27.97ppb Good	0.28ppb Good	5.59ppb Good	0.22ppm Good
Middletown, Connecticut	26 Good	3.05μg/m³ Good	16.50μg/m³ Good	27.73ppb Good	0.22ppb Good	6.00ppb Good	0.13ppm Good
Montville, Connecticut	26 Good	4.41μg/m³ Good	8.00μg/m³ Good	27.67ppb Good	0.28ppb Good	5.59ppb Good	0.20ppm Good
Norwich, Connecticut	26 Good	3.62μg/m³ Good	8.16μg/m³ Good	28.02ppb Good	0.28ppb Good	4.98ppb Good	0.20ppm Good
Plymouth, Connecticut	26 Good	2.83μg/m³ Good	15.76μg/m³ Good	27.74ppb Good	0.22ppb Good	4.72ppb Good	0.12ppm Good
Simsbury, Connecticut	26 Good	2.79μg/m³ Good	7.98μg/m³ Good	27.92ppb Good	0.26ppb Good	4.28ppb Good	0.12ppm Good
Stonington, Connecticut	26 Good	3.00μg/m³ Good	8.60μg/m³ Good	27.63ppb Good	0.27ppb Good	5.67ppb Good	0.21ppm Good
Tolland, Connecticut	26 Good	3.36μg/m³ Good	9.69μg/m³ Good	27.56ppb Good	0.25ppb Good	5.12ppb Good	0.16ppm Good
Windham, Connecticut	26 Good	2.72μg/m³ Good	8.65μg/m³ Good	27.77ppb Good	0.28ppb Good	5.03ppb Good	0.20ppm Good
Waterford, Connecticut	27 Good	4.68μg/m³ Good	8.00μg/m³ Good	27.62ppb Good	0.27ppb Good	5.64ppb Good	0.20ppm Good
Bloomfield, Connecticut	25 Good	3.25μg/m³ Good	9.03μg/m³ Good	27.10ppb Good	0.23ppb Good	5.84ppb Good	0.11ppm Good
Avon, Connecticut	25 Good	3.09μg/m³ Good	8.40μg/m³ Good	27.47ppb Good	0.26ppb Good	5.57ppb Good	0.12ppm Good
Berlin, Connecticut	25 Good	3.04μg/m³ Good	16.58μg/m³ Good	27.23ppb Good	0.22ppb Good	6.13ppb Good	0.12ppm Good
Bridgeport, Connecticut	25 Good	2.50μg/m³ Good	6.03μg/m³ Good	26.62ppb Good	0.20ppb Good	6.26ppb Good	0.14ppm Good
Bristol, Connecticut	25 Good	3.00μg/m³ Good	16.64μg/m³ Good	27.28ppb Good	0.20ppb Good	5.52ppb Good	0.12ppm Good
Cheshire, Connecticut	25 Good	2.86μg/m³ Good	15.73μg/m³ Good	26.92ppb Good	0.20ppb Good	6.08ppb Good	0.12ppm Good
Coventry, Connecticut	25 Good	3.19μg/m³ Good	9.13μg/m³ Good	27.40ppb Good	0.24ppb Good	5.10ppb Good	0.17ppm Good
Colchester, Connecticut	25 Good	3.45μg/m³ Good	9.02μg/m³ Good	26.86ppb Good	0.23ppb Good	5.96ppb Good	0.16ppm Good
East Hartford, Connecticut	25 Good	3.47μg/m³ Good	7.78μg/m³ Good	27.04ppb Good	0.23ppb Good	4.96ppb Good	0.11ppm Good
East Lyme, Connecticut	25 Good	4.23μg/m³ Good	9.39μg/m³ Good	27.41ppb Good	0.27ppb Good	5.64ppb Good	0.18ppm Good
Cromwell, Connecticut	25 Good	3.12μg/m³ Good	15.63μg/m³ Good	27.02ppb Good	0.22ppb Good	5.94ppb Good	0.13ppm Good
East Windsor, Connecticut	25 Good	2.96μg/m³ Good	8.37μg/m³ Good	27.48ppb Good	0.25ppb Good	5.23ppb Good	0.14ppm Good
Farmington, Connecticut	25 Good	3.10μg/m³ Good	8.60μg/m³ Good	27.44ppb Good	0.25ppb Good	5.33ppb Good	0.13ppm Good
Ellington, Connecticut	25 Good	3.15μg/m³ Good	9.18μg/m³ Good	27.09ppb Good	0.25ppb Good	5.19ppb Good	0.15ppm Good
Granby, Connecticut	25 Good	1.98μg/m³ Good	7.77μg/m³ Good	27.34ppb Good	0.27ppb Good	3.66ppb Good	0.12ppm Good
Glastonbury, Connecticut	25 Good	3.29μg/m³ Good	8.34μg/m³ Good	27.05ppb Good	0.24ppb Good	5.23ppb Good	0.11ppm Good
Hartford, Connecticut	25 Good	3.22μg/m³ Good	9.87μg/m³ Good	27.15ppb Good	0.23ppb Good	6.60ppb Good	0.10ppm Good
Meriden, Connecticut	25 Good	2.92μg/m³ Good	12.12μg/m³ Good	27.32ppb Good	0.21ppb Good	6.25ppb Good	0.12ppm Good
Mansfield, Connecticut	26 Good	2.82μg/m³ Good	8.33μg/m³ Good	27.50ppb Good	0.24ppb Good	5.06ppb Good	0.18ppm Good
Manchester, Connecticut	25 Good	3.42μg/m³ Good	9.60μg/m³ Good	27.47ppb Good	0.24ppb Good	5.22ppb Good	0.13ppm Good
New Britain, Connecticut	25 Good	3.04μg/m³ Good	16.58μg/m³ Good	27.23ppb Good	0.22ppb Good	6.13ppb Good	0.12ppm Good
New Milford, Connecticut	26 Good	2.79μg/m³ Good	7.58μg/m³ Good	27.52ppb Good	0.20ppb Good	4.57ppb Good	0.14ppm Good
Newington, Connecticut	25 Good	3.29μg/m³ Good	9.27μg/m³ Good	27.03ppb Good	0.23ppb Good	5.99ppb Good	0.11ppm Good
Naugatuck, Connecticut	25 Good	3.33μg/m³ Good	14.13μg/m³ Good	27.18ppb Good	0.20ppb Good	5.67ppb Good	0.12ppm Good
Oxford, Connecticut	25 Good	2.83μg/m³ Good	11.04μg/m³ Good	26.80ppb Good	0.20ppb Good	6.21ppb Good	0.13ppm Good
Plainville, Connecticut	25 Good	3.00μg/m³ Good	15.71μg/m³ Good	26.88ppb Good	0.21ppb Good	5.94ppb Good	0.12ppm Good
Rocky Hill, Connecticut	25 Good	3.12μg/m³ Good	15.61μg/m³ Good	26.69ppb Good	0.22ppb Good	5.80ppb Good	0.13ppm Good
Suffield, Connecticut	25 Good	1.94μg/m³ Good	8.39μg/m³ Good	27.41ppb Good	0.28ppb Good	3.90ppb Good	0.12ppm Good
Torrington, Connecticut	25 Good	2.64μg/m³ Good	8.73μg/m³ Good	27.04ppb Good	0.19ppb Good	3.88ppb Good	0.12ppm Good
South Windsor, Connecticut	25 Good	3.19μg/m³ Good	7.73μg/m³ Good	27.07ppb Good	0.24ppb Good	4.96ppb Good	0.12ppm Good
Stafford, Connecticut	24 Good	2.85μg/m³ Good	9.13μg/m³ Good	26.48ppb Good	0.31ppb Good	5.07ppb Good	0.18ppm Good
Stratford, Connecticut	25 Good	2.60μg/m³ Good	6.81μg/m³ Good	26.53ppb Good	0.20ppb Good	5.82ppb Good	0.14ppm Good
Vernon, Connecticut	25 Good	3.42μg/m³ Good	13.44μg/m³ Good	27.26ppb Good	0.24ppb Good	5.12ppb Good	0.14ppm Good

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

0.19ppm

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

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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 03:00:00 on 2026-02-11.

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 12:00:00 on 2026-02-12.

What is the AQI in Connecticut, USA right now?

As of now, the AQI in Connecticut, USA is 25, 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 3.105 μg/m³.

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

The PM₁₀ concentration in Connecticut, USA is 10.141 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 0.141 ppm.

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

Currently, Connecticut, USA has a sulfur dioxide (SO₂) concentration of 0.229 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 26.623 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 5.642 ppb.

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