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

The PM10 concentration in Connecticut, USA is 19.079 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 0.223 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 27.821 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 5.12 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 10.844 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)

3.79 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

13.57 μg/m³

155

255

425

605+

Ozone (O₃)

28.65 ppb

201

201+

Sulfur Dioxide (SO₂)

0.18 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.38 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.18 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
2026-02-10T00:00:00.000Z	46 \| good	6.885 \| good	50.019 \| good	35.022 \| good	0.243 \| good	9.825 \| good	0.251 \| good
2026-02-10T01:00:00.000Z	62 \| moderate	11.004 \| good	77.06 \| fine	34.145 \| good	0.265 \| good	8.429 \| good	0.288 \| good
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
2026-02-11T23:00:00.000Z	27 \| good	3.787 \| good	13.569 \| good	28.651 \| good	0.18 \| good	5.379 \| good	0.177 \| good
2026-02-11T22:00:00.000Z	38 \| good	6.951 \| good	30.644 \| good	33.004 \| good	0.255 \| good	2.437 \| good	0.154 \| good
2026-02-11T23:00:00.000Z	38 \| good	7.128 \| good	31.453 \| good	33.025 \| good	0.289 \| good	3.07 \| good	0.161 \| good
2026-02-12T00:00:00.000Z	52 \| moderate	10.313 \| good	45.796 \| good	29.187 \| good	0.324 \| good	3.704 \| good	0.167 \| good
2026-02-12T01:00:00.000Z	54 \| moderate	10.636 \| good	47.258 \| good	27.828 \| good	0.38 \| good	3.475 \| good	0.17 \| 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

Connecticut

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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
Groton, Connecticut	52 Moderate	10.18μg/m³ Good	14.02μg/m³ Good	31.85ppb Good	0.32ppb Good	4.77ppb Good	0.19ppm Good
New London, Connecticut	52 Moderate	10.18μg/m³ Good	14.02μg/m³ Good	31.85ppb Good	0.32ppb Good	4.77ppb Good	0.19ppm Good
Montville, Connecticut	52 Moderate	9.53μg/m³ Good	14.54μg/m³ Good	31.62ppb Good	0.32ppb Good	4.58ppb Good	0.19ppm Good
Waterford, Connecticut	52 Moderate	9.99μg/m³ Good	14.16μg/m³ Good	31.78ppb Good	0.32ppb Good	4.72ppb Good	0.19ppm Good
East Hartford, Connecticut	49 Good	9.38μg/m³ Good	15.92μg/m³ Good	30.92ppb Good	0.20ppb Good	3.67ppb Good	0.12ppm Good
Ledyard, Connecticut	49 Good	9.10μg/m³ Good	15.63μg/m³ Good	31.70ppb Good	0.34ppb Good	4.59ppb Good	0.20ppm Good
East Haven, Connecticut	49 Good	8.87μg/m³ Good	15.12μg/m³ Good	25.26ppb Good	0.20ppb Good	6.82ppb Good	0.20ppm Good
New Haven, Connecticut	49 Good	8.94μg/m³ Good	15.06μg/m³ Good	25.09ppb Good	0.20ppb Good	6.92ppb Good	0.20ppm Good
Wethersfield, Connecticut	49 Good	8.88μg/m³ Good	15.95μg/m³ Good	30.73ppb Good	0.20ppb Good	4.20ppb Good	0.11ppm Good
Windsor, Connecticut	49 Good	8.88μg/m³ Good	15.67μg/m³ Good	30.83ppb Good	0.20ppb Good	3.85ppb Good	0.12ppm Good
Branford, Connecticut	49 Good	8.66μg/m³ Good	15.32μg/m³ Good	25.67ppb Good	0.19ppb Good	6.54ppb Good	0.19ppm Good
Hamden, Connecticut	49 Good	8.68μg/m³ Good	15.35μg/m³ Good	26.00ppb Good	0.19ppb Good	6.27ppb Good	0.19ppm Good
North Haven, Connecticut	49 Good	8.76μg/m³ Good	15.22μg/m³ Good	25.82ppb Good	0.19ppb Good	6.44ppb Good	0.19ppm Good
Bloomfield, Connecticut	44 Good	8.46μg/m³ Good	15.71μg/m³ Good	30.75ppb Good	0.20ppb Good	4.25ppb Good	0.11ppm Good
Glastonbury, Connecticut	49 Good	8.62μg/m³ Good	15.52μg/m³ Good	30.72ppb Good	0.21ppb Good	3.85ppb Good	0.12ppm Good
Old Saybrook, Connecticut	49 Good	8.52μg/m³ Good	14.82μg/m³ Good	28.33ppb Good	0.18ppb Good	5.25ppb Good	0.17ppm Good
Newington, Connecticut	49 Good	8.63μg/m³ Good	15.96μg/m³ Good	30.48ppb Good	0.20ppb Good	4.41ppb Good	0.11ppm Good
West Haven, Connecticut	49 Good	8.56μg/m³ Good	15.34μg/m³ Good	25.62ppb Good	0.19ppb Good	6.50ppb Good	0.20ppm Good
West Hartford, Connecticut	49 Good	8.56μg/m³ Good	15.95μg/m³ Good	30.63ppb Good	0.20ppb Good	4.47ppb Good	0.11ppm Good
Clinton, Connecticut	44 Good	8.46μg/m³ Good	12.62μg/m³ Good	27.65ppb Good	0.18ppb Good	5.39ppb Good	0.17ppm Good
East Lyme, Connecticut	44 Good	8.42μg/m³ Good	17.86μg/m³ Good	30.54ppb Good	0.22ppb Good	4.97ppb Good	0.18ppm Good
Hartford, Connecticut	44 Good	8.36μg/m³ Good	15.99μg/m³ Good	30.80ppb Good	0.20ppb Good	4.73ppb Good	0.10ppm Good
Manchester, Connecticut	44 Good	8.38μg/m³ Good	18.31μg/m³ Good	30.46ppb Good	0.24ppb Good	3.63ppb Good	0.14ppm Good
Berlin, Connecticut	44 Good	8.15μg/m³ Good	19.28μg/m³ Good	27.79ppb Good	0.19ppb Good	4.37ppb Good	0.14ppm Good
New Britain, Connecticut	44 Good	8.15μg/m³ Good	19.28μg/m³ Good	27.79ppb Good	0.19ppb Good	4.37ppb Good	0.14ppm Good
South Windsor, Connecticut	44 Good	8.28μg/m³ Good	14.86μg/m³ Good	30.80ppb Good	0.21ppb Good	3.66ppb Good	0.12ppm Good
Wolcott, Connecticut	44 Good	8.20μg/m³ Good	17.44μg/m³ Good	27.72ppb Good	0.18ppb Good	4.42ppb Good	0.16ppm Good
Avon, Connecticut	44 Good	8.02μg/m³ Good	16.02μg/m³ Good	30.78ppb Good	0.20ppb Good	3.94ppb Good	0.13ppm Good
Cheshire, Connecticut	44 Good	7.96μg/m³ Good	15.26μg/m³ Good	27.70ppb Good	0.18ppb Good	4.58ppb Good	0.17ppm Good
Canton, Connecticut	44 Good	7.98μg/m³ Good	16.08μg/m³ Good	30.48ppb Good	0.20ppb Good	3.63ppb Good	0.13ppm Good
Farmington, Connecticut	44 Good	7.94μg/m³ Good	16.19μg/m³ Good	30.41ppb Good	0.19ppb Good	4.19ppb Good	0.14ppm Good
Middletown, Connecticut	44 Good	8.04μg/m³ Good	19.29μg/m³ Good	29.60ppb Good	0.19ppb Good	4.34ppb Good	0.15ppm Good
Naugatuck, Connecticut	44 Good	8.02μg/m³ Good	17.46μg/m³ Good	27.39ppb Good	0.18ppb Good	4.47ppb Good	0.16ppm Good
Rocky Hill, Connecticut	44 Good	7.93μg/m³ Good	19.21μg/m³ Good	29.12ppb Good	0.19ppb Good	4.19ppb Good	0.14ppm Good
Vernon, Connecticut	44 Good	7.92μg/m³ Good	18.30μg/m³ Good	30.33ppb Good	0.24ppb Good	3.56ppb Good	0.14ppm Good
Waterbury, Connecticut	44 Good	8.10μg/m³ Good	17.98μg/m³ Good	27.42ppb Good	0.18ppb Good	4.32ppb Good	0.16ppm Good
Bristol, Connecticut	44 Good	7.83μg/m³ Good	19.43μg/m³ Good	27.38ppb Good	0.19ppb Good	4.26ppb Good	0.15ppm Good
Cromwell, Connecticut	44 Good	7.80μg/m³ Good	19.25μg/m³ Good	30.36ppb Good	0.19ppb Good	4.26ppb Good	0.15ppm Good
Meriden, Connecticut	44 Good	7.87μg/m³ Good	16.38μg/m³ Good	28.73ppb Good	0.19ppb Good	4.58ppb Good	0.16ppm Good
Plymouth, Connecticut	44 Good	7.75μg/m³ Good	18.41μg/m³ Good	28.09ppb Good	0.19ppb Good	3.62ppb Good	0.15ppm Good
Simsbury, Connecticut	44 Good	7.78μg/m³ Good	15.95μg/m³ Good	30.82ppb Good	0.20ppb Good	3.32ppb Good	0.13ppm Good
Southington, Connecticut	44 Good	7.89μg/m³ Good	19.42μg/m³ Good	27.74ppb Good	0.19ppb Good	4.41ppb Good	0.15ppm Good
Torrington, Connecticut	44 Good	7.91μg/m³ Good	13.87μg/m³ Good	29.59ppb Good	0.19ppb Good	3.46ppb Good	0.14ppm Good
Watertown, Connecticut	44 Good	7.86μg/m³ Good	16.72μg/m³ Good	27.73ppb Good	0.18ppb Good	4.42ppb Good	0.16ppm Good
East Hampton, Connecticut	44 Good	7.60μg/m³ Good	19.04μg/m³ Good	29.06ppb Good	0.19ppb Good	4.19ppb Good	0.15ppm Good
Madison, Connecticut	44 Good	7.62μg/m³ Good	14.71μg/m³ Good	27.89ppb Good	0.18ppb Good	5.49ppb Good	0.17ppm Good
Plainville, Connecticut	44 Good	7.63μg/m³ Good	19.38μg/m³ Good	27.62ppb Good	0.19ppb Good	4.33ppb Good	0.15ppm Good
Wallingford, Connecticut	44 Good	7.59μg/m³ Good	13.69μg/m³ Good	28.30ppb Good	0.19ppb Good	4.66ppb Good	0.17ppm Good
Winchester, Connecticut	44 Good	7.71μg/m³ Good	15.64μg/m³ Good	29.72ppb Good	0.19ppb Good	3.39ppb Good	0.14ppm Good
Colchester, Connecticut	38 Good	7.31μg/m³ Good	18.52μg/m³ Good	28.75ppb Good	0.22ppb Good	4.18ppb Good	0.17ppm 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

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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 09:00:00 on 2026-02-10.

What is the AQI in Connecticut, USA right now?

As of now, the AQI in Connecticut, USA is 54, indicating Moderate conditions.

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

Connecticut, USA air has the highest levels of PM2.5.

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 10.844 μg/m³.

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

The PM₁₀ concentration in Connecticut, USA is 19.079 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 0.186 ppm.

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

Currently, Connecticut, USA has a sulfur dioxide (SO₂) concentration of 0.223 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 27.821 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 5.12 ppb.

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