What is the current concentration of PM10 in Fairfield, Connecticut?

The current PM10 concentration at Fairfield, Connecticut is 2.128 μg/m3.

What is the current concentration of sulfur dioxide (SO2) in Fairfield, Connecticut?

The current sulfur dioxide (SO2) concentration at Fairfield, Connecticut is 0.496 ppb.

What is the current concentration of ozone (O3) in Fairfield, Connecticut?

The current ozone (O3) concentration at Fairfield, Connecticut is 21.756 ppm.

What is the current concentration of nitrogen dioxide (NO2) in Fairfield, Connecticut?

The current nitrogen dioxide (NO2) concentration at Fairfield, Connecticut is 3.194 ppb.

Fairfield, Connecticut live air quality index now

Q: What is the current concentration of PM2.5 in Fairfield, Connecticut?

The current PM2.5 concentration at Fairfield, Connecticut is 0.921 μg/m3.

Stay updated with real-time air quality in Fairfield, Connecticut 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

Fairfield, Connecticut

Last updated: ... (Local time)

Major air pollutants in Fairfield, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

0.92 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

2.13 μg/m³

155

255

425

605+

Ozone (O₃)

21.76 ppb

201

201+

Sulfur Dioxide (SO₂)

0.50 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.19 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.28 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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Fairfield, Connecticut

Scroll To Air Quality Map

Track live Fairfield, Connecticut air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-27T00:00:00.000Z	27 \| good	3.424 \| good	7.429 \| good	29.207 \| good	0.152 \| good	2.161 \| good	0.216 \| good
2026-09-27T01:00:00.000Z	28 \| good	3.08 \| good	5.66 \| good	29.557 \| good	0.157 \| good	1.839 \| good	0.216 \| good
2026-09-27T02:00:00.000Z	29 \| good	3.204 \| good	6.104 \| good	30.638 \| good	0.142 \| good	1.458 \| good	0.216 \| good
2026-09-27T03:00:00.000Z	27 \| good	1.593 \| good	6.293 \| good	29.358 \| good	0.113 \| good	1.318 \| good	0.131 \| good
2026-09-27T04:00:00.000Z	30 \| good	3.143 \| good	9.092 \| good	31.772 \| good	0.252 \| good	2.124 \| good	0.216 \| good
2026-09-27T05:00:00.000Z	29 \| good	2.462 \| good	5.146 \| good	31.203 \| good	0.398 \| good	2.008 \| good	0.216 \| good
2026-09-27T06:00:00.000Z	29 \| good	2.345 \| good	5.052 \| good	30.603 \| good	0.4 \| good	1.23 \| good	0.216 \| good
2026-09-27T07:00:00.000Z	28 \| good	2.351 \| good	5.459 \| good	29.663 \| good	0.416 \| good	0.901 \| good	0.22 \| good
2026-09-27T08:00:00.000Z	27 \| good	1.401 \| good	2.998 \| good	29.058 \| good	0.27 \| good	1.09 \| good	0.216 \| good
2026-09-27T09:00:00.000Z	28 \| good	1.155 \| good	3.393 \| good	29.727 \| good	0.269 \| good	1.053 \| good	0.197 \| good
2026-09-27T10:00:00.000Z	27 \| good	0.742 \| good	1.796 \| good	29.172 \| good	0.252 \| good	1.103 \| good	0.197 \| good
2026-09-27T11:00:00.000Z	28 \| good	0.538 \| good	1.465 \| good	29.754 \| good	0.252 \| good	1.03 \| good	0.197 \| good
2026-09-27T12:00:00.000Z	27 \| good	0.479 \| good	5.822 \| good	29.09 \| good	0.305 \| good	1.454 \| good	0.197 \| good
2026-09-27T13:00:00.000Z	26 \| good	0.559 \| good	2.658 \| good	28.461 \| good	0.27 \| good	1.488 \| good	0.197 \| good
2026-09-27T14:00:00.000Z	27 \| good	0.523 \| good	2.219 \| good	28.9 \| good	0.252 \| good	1.424 \| good	0.197 \| good
2026-09-27T15:00:00.000Z	25 \| good	0.682 \| good	2.274 \| good	27.402 \| good	0.264 \| good	1.723 \| good	0.197 \| good
2026-09-27T16:00:00.000Z	26 \| good	1.008 \| good	3.545 \| good	27.559 \| good	0.413 \| good	1.645 \| good	0.197 \| good
2026-09-27T17:00:00.000Z	25 \| good	1.058 \| good	3.496 \| good	27.483 \| good	0.417 \| good	1.739 \| good	0.197 \| good
2026-09-27T18:00:00.000Z	25 \| good	0.714 \| good	2.327 \| good	27.089 \| good	0.493 \| good	2.001 \| good	0.232 \| good
2026-09-27T19:00:00.000Z	24 \| good	1.296 \| good	6.963 \| good	26.177 \| good	0.187 \| good	2.002 \| good	0.246 \| good
2026-09-27T20:00:00.000Z	23 \| good	1.256 \| good	9.953 \| good	25.089 \| good	0.271 \| good	2.2 \| good	0.246 \| good
2026-09-27T21:00:00.000Z	23 \| good	1.118 \| good	3.46 \| good	25.045 \| good	0.25 \| good	2.401 \| good	0.26 \| good
2026-09-27T22:00:00.000Z	23 \| good	1.015 \| good	3.638 \| good	24.94 \| good	0.269 \| good	2.374 \| good	0.26 \| good
2026-09-27T23:00:00.000Z	22 \| good	1.152 \| good	3.563 \| good	24.177 \| good	0.384 \| good	2.226 \| good	0.26 \| good
2026-09-28T00:00:00.000Z	22 \| good	1.09 \| good	4.044 \| good	23.682 \| good	0.441 \| good	2.162 \| good	0.211 \| good
2026-09-28T01:00:00.000Z	23 \| good	1.037 \| good	3.357 \| good	24.567 \| good	0.25 \| good	2.229 \| good	0.211 \| good
2026-09-28T02:00:00.000Z	21 \| good	0.879 \| good	2.988 \| good	23.376 \| good	0.251 \| good	2.145 \| good	0.211 \| good
2026-09-28T03:00:00.000Z	32 \| good	4.531 \| good	19.452 \| good	34.803 \| good	0.182 \| good	3.157 \| good	0.142 \| good
2026-09-28T04:00:00.000Z	22 \| good	0.83 \| good	2.734 \| good	24.098 \| good	0.218 \| good	2.611 \| good	0.197 \| good
2026-09-28T05:00:00.000Z	23 \| good	0.829 \| good	3.04 \| good	24.541 \| good	0.453 \| good	2.462 \| good	0.197 \| good
2026-09-28T06:00:00.000Z	24 \| good	0.78 \| good	2.893 \| good	25.552 \| good	0.254 \| good	1.961 \| good	0.181 \| good
2026-09-28T07:00:00.000Z	24 \| good	0.705 \| good	2.264 \| good	26.103 \| good	0.272 \| good	1.587 \| good	0.176 \| good
2026-09-28T08:00:00.000Z	23 \| good	0.635 \| good	2.321 \| good	25.444 \| good	0.434 \| good	2.161 \| good	0.181 \| good
2026-09-28T09:00:00.000Z	23 \| good	0.652 \| good	2.279 \| good	25.406 \| good	0.512 \| good	2.295 \| good	0.181 \| good
2026-09-28T10:00:00.000Z	23 \| good	0.664 \| good	2.904 \| good	25.263 \| good	0.359 \| good	2.797 \| good	0.181 \| good
2026-09-28T11:00:00.000Z	24 \| good	0.769 \| good	2.665 \| good	26.06 \| good	0.236 \| good	3.132 \| good	0.185 \| good
2026-09-28T12:00:00.000Z	24 \| good	0.712 \| good	2.038 \| good	25.893 \| good	0.413 \| good	3.372 \| good	0.211 \| good
2026-09-28T13:00:00.000Z	23 \| good	0.798 \| good	3.089 \| good	25.416 \| good	0.433 \| good	2.49 \| good	0.224 \| good
2026-09-28T14:00:00.000Z	23 \| good	0.789 \| good	2.762 \| good	25.029 \| good	0.281 \| good	3.885 \| good	0.211 \| good
2026-09-28T15:00:00.000Z	22 \| good	0.81 \| good	2.443 \| good	24.436 \| good	0.245 \| good	4.4 \| good	0.211 \| good
2026-09-28T16:00:00.000Z	21 \| good	0.799 \| good	3.103 \| good	23.07 \| good	0.482 \| good	4.055 \| good	0.228 \| good
2026-09-28T17:00:00.000Z	21 \| good	0.785 \| good	2.527 \| good	23.315 \| good	0.7 \| good	3.734 \| good	0.228 \| good
2026-09-28T18:00:00.000Z	21 \| good	0.772 \| good	2.446 \| good	23.02 \| good	0.467 \| good	3.217 \| good	0.246 \| good
2026-09-28T19:00:00.000Z	21 \| good	0.797 \| good	2.173 \| good	23.17 \| good	0.471 \| good	3.106 \| good	0.246 \| good
2026-09-28T20:00:00.000Z	21 \| good	0.795 \| good	2.377 \| good	22.919 \| good	0.655 \| good	2.936 \| good	0.263 \| good
2026-09-28T21:00:00.000Z	21 \| good	0.787 \| good	2.235 \| good	22.609 \| good	0.451 \| good	2.863 \| good	0.263 \| good
2026-09-28T22:00:00.000Z	20 \| good	0.921 \| good	2.128 \| good	21.756 \| good	0.496 \| good	3.194 \| good	0.277 \| good
2026-09-28T23:00:00.000Z	20 \| good	0.921 \| good	2.128 \| good	21.756 \| good	0.496 \| good	3.194 \| good	0.277 \| good
2026-09-29T00:00:00.000Z	22 \| good	3.58 \| good	15.697 \| good	22.767 \| good	0.168 \| good	4.44 \| good	0.165 \| good
2026-09-29T01:00:00.000Z	22 \| good	3.515 \| good	15.401 \| good	22.207 \| good	0.174 \| good	4.676 \| good	0.166 \| good
2026-09-29T02:00:00.000Z	19 \| good	3.034 \| good	12.842 \| good	20.808 \| good	0.18 \| good	4.867 \| good	0.165 \| good
2026-09-29T03:00:00.000Z	18 \| good	3.026 \| good	12.469 \| good	19.065 \| good	0.188 \| good	5.133 \| good	0.167 \| good
2026-09-29T04:00:00.000Z	17 \| good	3.394 \| good	14.893 \| good	18.456 \| good	0.194 \| good	5.135 \| good	0.168 \| good
2026-09-29T05:00:00.000Z	22 \| good	4 \| good	17.559 \| good	14.948 \| good	0.201 \| good	4.943 \| good	0.167 \| good
2026-09-29T06:00:00.000Z	22 \| good	4.175 \| good	18.266 \| good	11.847 \| good	0.212 \| good	4.865 \| good	0.165 \| good
2026-09-29T07:00:00.000Z	22 \| good	3.899 \| good	17.138 \| good	10.809 \| good	0.222 \| good	4.895 \| good	0.164 \| good
2026-09-29T08:00:00.000Z	22 \| good	3.993 \| good	17.346 \| good	10.173 \| good	0.231 \| good	5.093 \| good	0.164 \| good
2026-09-29T09:00:00.000Z	16 \| good	3.22 \| good	14.181 \| good	9.706 \| good	0.24 \| good	5.495 \| good	0.165 \| good
2026-09-29T10:00:00.000Z	16 \| good	3.284 \| good	14.661 \| good	6.972 \| good	0.25 \| good	6.087 \| good	0.169 \| good
2026-09-29T11:00:00.000Z	16 \| good	3.263 \| good	14.088 \| good	9.4 \| good	0.268 \| good	7.183 \| good	0.18 \| good
2026-09-29T12:00:00.000Z	16 \| good	3.23 \| good	14.143 \| good	16.205 \| good	0.287 \| good	7.377 \| good	0.198 \| good
2026-09-29T13:00:00.000Z	22 \| good	3.562 \| good	15.636 \| good	22.193 \| good	0.288 \| good	5.248 \| good	0.191 \| good
2026-09-29T14:00:00.000Z	25 \| good	2.878 \| good	11.993 \| good	26.513 \| good	0.286 \| good	3.598 \| good	0.177 \| good
2026-09-29T15:00:00.000Z	28 \| good	2.78 \| good	11.573 \| good	29.61 \| good	0.268 \| good	2.521 \| good	0.162 \| good
2026-09-29T16:00:00.000Z	30 \| good	2.686 \| good	11.351 \| good	31.522 \| good	0.271 \| good	2.239 \| good	0.157 \| good
2026-09-29T17:00:00.000Z	28 \| good	2.556 \| good	10.742 \| good	29.948 \| good	0.285 \| good	2.286 \| good	0.157 \| good
2026-09-29T18:00:00.000Z	25 \| good	2.804 \| good	11.502 \| good	26.991 \| good	0.305 \| good	2.258 \| good	0.156 \| good
2026-09-29T19:00:00.000Z	25 \| good	2.819 \| good	11.422 \| good	26.938 \| good	0.302 \| good	2.137 \| good	0.155 \| good
2026-09-29T20:00:00.000Z	27 \| good	2.994 \| good	12.977 \| good	28.957 \| good	0.299 \| good	2.064 \| good	0.156 \| good
2026-09-29T21:00:00.000Z	25 \| good	2.961 \| good	12.386 \| good	26.929 \| good	0.297 \| good	2.354 \| good	0.16 \| good
2026-09-29T22:00:00.000Z	23 \| good	3.326 \| good	14.472 \| good	24.511 \| good	0.306 \| good	4.046 \| good	0.179 \| good
2026-09-29T23:00:00.000Z	22 \| good	4.004 \| good	17.727 \| good	19.669 \| good	0.333 \| good	6.987 \| good	0.207 \| good
2026-09-30T00:00:00.000Z	38 \| good	7.081 \| good	31.342 \| good	22.578 \| good	0.365 \| good	8.657 \| good	0.22 \| good
2026-09-30T01:00:00.000Z	44 \| good	7.56 \| good	33.287 \| good	21.24 \| good	0.386 \| good	9.481 \| good	0.224 \| good
2026-09-30T02:00:00.000Z	38 \| good	7.009 \| good	31.045 \| good	20.291 \| good	0.398 \| good	9.598 \| good	0.222 \| good
2026-09-30T03:00:00.000Z	33 \| good	5.865 \| good	25.999 \| good	21.525 \| good	0.402 \| good	9.028 \| good	0.217 \| good
2026-09-30T04:00:00.000Z	27 \| good	5.379 \| good	23.101 \| good	22.23 \| good	0.394 \| good	7.965 \| good	0.209 \| good
2026-09-30T05:00:00.000Z	27 \| good	4.502 \| good	19.525 \| good	23.084 \| good	0.387 \| good	6.883 \| good	0.2 \| good
2026-09-30T06:00:00.000Z	22 \| good	4.322 \| good	18.94 \| good	22.842 \| good	0.389 \| good	6.439 \| good	0.195 \| good
2026-09-30T07:00:00.000Z	27 \| good	4.56 \| good	19.851 \| good	19.647 \| good	0.395 \| good	6.413 \| good	0.192 \| good
2026-09-30T08:00:00.000Z	27 \| good	4.952 \| good	21.3 \| good	18.412 \| good	0.404 \| good	6.389 \| good	0.19 \| good
2026-09-30T09:00:00.000Z	22 \| good	4.224 \| good	18.694 \| good	14.528 \| good	0.419 \| good	6.195 \| good	0.188 \| good
2026-09-30T10:00:00.000Z	27 \| good	5.049 \| good	21.958 \| good	14.14 \| good	0.437 \| good	6.199 \| good	0.188 \| good
2026-09-30T11:00:00.000Z	27 \| good	5.213 \| good	22.526 \| good	13.88 \| good	0.463 \| good	6.745 \| good	0.196 \| good
2026-09-30T12:00:00.000Z	33 \| good	5.728 \| good	25.118 \| good	16.701 \| good	0.466 \| good	6.381 \| good	0.218 \| good
2026-09-30T13:00:00.000Z	33 \| good	5.81 \| good	25.441 \| good	22.147 \| good	0.532 \| good	4.373 \| good	0.205 \| good
2026-09-30T14:00:00.000Z	27 \| good	5.24 \| good	22.674 \| good	26.913 \| good	0.61 \| good	2.953 \| good	0.187 \| good
2026-09-30T15:00:00.000Z	28 \| good	5.066 \| good	21.834 \| good	29.97 \| good	0.586 \| good	2.044 \| good	0.173 \| good
2026-09-30T16:00:00.000Z	31 \| good	5.203 \| good	22.682 \| good	33.867 \| good	0.501 \| good	1.579 \| good	0.161 \| good
2026-09-30T17:00:00.000Z	36 \| good	5.209 \| good	22.683 \| good	38.749 \| good	0.451 \| good	1.611 \| good	0.158 \| good
2026-09-30T18:00:00.000Z	38 \| good	5.925 \| good	25.947 \| good	40.745 \| good	0.414 \| good	1.756 \| good	0.156 \| good
2026-09-30T19:00:00.000Z	38 \| good	5.758 \| good	25.409 \| good	41.078 \| good	0.398 \| good	2.127 \| good	0.156 \| good
2026-09-30T20:00:00.000Z	39 \| good	3.705 \| good	16.025 \| good	41.598 \| good	0.389 \| good	2.701 \| good	0.159 \| good
2026-09-30T21:00:00.000Z	39 \| good	5.238 \| good	22.467 \| good	41.5 \| good	0.393 \| good	3.855 \| good	0.168 \| good
2026-09-30T22:00:00.000Z	38 \| good	7.126 \| good	31.589 \| good	37.794 \| good	0.434 \| good	8.361 \| good	0.214 \| good
2026-09-30T23:00:00.000Z	52 \| moderate	9.967 \| good	44.297 \| good	34.829 \| good	0.519 \| good	15.532 \| good	0.289 \| good

Fairfield

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Fairfield, Connecticut air quality map: Track AQI near you

0.28ppm

How accurate is Connecticut, USA air quality data?

Air quality data and pollutant measurements for Connecticut, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.

Source: Ambee Data Sources

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Frequently asked questions

How often is the air quality data for Fairfield, Connecticut updated?

The air quality for Fairfield, Connecticut is updated every hour.

When was the worst air quality at Fairfield, Connecticut in the last 24 hrs?

The worst air quality in Fairfield, Connecticut in the last 24 hours was observed at 03:00:00 on 2026-09-28.

When was the best air quality at Fairfield, Connecticut in the last 24 hrs?

In the last 24 hrs, the best air quality in Fairfield, Connecticut was observed at 10:00:00 on 2026-09-28.

What is the current air quality in Fairfield, Connecticut?

The current air quality in Fairfield, Connecticut is 20, categorized as Good based on real-time data.

What pollutant is the most common in Fairfield, Connecticut?

The most common pollutant in Fairfield, Connecticut is O3.

What should I do if the air quality in Fairfield, Connecticut is poor?

If the air quality in Fairfield, Connecticut is poor, consider staying indoors and wearing a mask to protect yourself.

What is the current concentration of PM_2.5 in Fairfield, Connecticut?

The current PM_2.5 concentration at Fairfield, Connecticut is 0.921 μg/m³.

What is the current concentration of PM₁₀ in Fairfield, Connecticut?

The current PM₁₀ concentration at Fairfield, Connecticut is 2.128 μg/m³.

What is the current concentration of carbon monoxide (CO) in Fairfield, Connecticut?

The current carbon monoxide (CO) concentration at Fairfield, Connecticut is 0.277 ppm.

What is the current concentration of sulfur dioxide (SO₂) in Fairfield, Connecticut?

The current sulfur dioxide (SO₂) concentration at Fairfield, Connecticut is 0.496 ppb.

What is the current concentration of ozone (O₃) in Fairfield, Connecticut?

The current ozone (O₃) concentration at Fairfield, Connecticut is 21.756 ppm.

What is the current concentration of nitrogen dioxide (NO₂) in Fairfield, Connecticut?

The current nitrogen dioxide (NO₂) concentration at Fairfield, Connecticut is 3.194 ppb.

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