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

The current PM10 concentration at Fairfield, Connecticut is 15.436 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Fairfield, Connecticut is 0.37 ppb.

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

The current ozone (O3) concentration at Fairfield, Connecticut is 45.714 ppm.

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

The current nitrogen dioxide (NO2) concentration at Fairfield, Connecticut is 2.709 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 5.347 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)

5.35 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

15.44 μg/m³

155

255

425

605+

Ozone (O₃)

45.71 ppb

201

201+

Sulfur Dioxide (SO₂)

0.37 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

2.71 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.22 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
2026-03-27T23:00:00.000Z	36 \| good	2.605 \| good	7.856 \| good	38.77 \| good	0.185 \| good	4.203 \| good	0.21 \| good
2026-03-28T00:00:00.000Z	36 \| good	2.777 \| good	6.487 \| good	39 \| good	0.104 \| good	5.934 \| good	0.21 \| good
2026-03-28T01:00:00.000Z	35 \| good	2.974 \| good	6.908 \| good	38.121 \| good	0.112 \| good	8.233 \| good	0.21 \| good
2026-03-28T02:00:00.000Z	35 \| good	3.17 \| good	8.024 \| good	37.767 \| good	0.108 \| good	12.501 \| good	0.226 \| good
2026-03-28T03:00:00.000Z	27 \| good	3.408 \| good	9.526 \| good	28.683 \| good	0.107 \| good	17.716 \| good	0.292 \| good
2026-03-28T04:00:00.000Z	30 \| good	3.897 \| good	9.146 \| good	31.695 \| good	0.189 \| good	18.646 \| good	0.261 \| good
2026-03-28T05:00:00.000Z	23 \| good	4.089 \| good	9.262 \| good	25.164 \| good	0.109 \| good	15.649 \| good	0.261 \| good
2026-03-28T06:00:00.000Z	25 \| good	4.044 \| good	11.25 \| good	27.498 \| good	0.122 \| good	13.886 \| good	0.234 \| good
2026-03-28T07:00:00.000Z	27 \| good	3.911 \| good	9.601 \| good	29.105 \| good	0.109 \| good	7.011 \| good	0.194 \| good
2026-03-28T08:00:00.000Z	31 \| good	3.955 \| good	9.497 \| good	33.021 \| good	0.107 \| good	4.481 \| good	0.196 \| good
2026-03-28T09:00:00.000Z	30 \| good	3.831 \| good	10.641 \| good	32.133 \| good	0.106 \| good	4.22 \| good	0.196 \| good
2026-03-28T10:00:00.000Z	29 \| good	3.912 \| good	10.417 \| good	31.019 \| good	0.106 \| good	4.559 \| good	0.18 \| good
2026-03-28T11:00:00.000Z	32 \| good	3.869 \| good	10.765 \| good	35.448 \| good	0.104 \| good	4.451 \| good	0.16 \| good
2026-03-28T12:00:00.000Z	32 \| good	4.125 \| good	11.757 \| good	34.94 \| good	0.187 \| good	4.44 \| good	0.192 \| good
2026-03-28T13:00:00.000Z	33 \| good	4.112 \| good	11.189 \| good	35.87 \| good	0.196 \| good	3.384 \| good	0.234 \| good
2026-03-28T14:00:00.000Z	33 \| good	4.074 \| good	11.349 \| good	36.17 \| good	0.187 \| good	2.592 \| good	0.211 \| good
2026-03-28T15:00:00.000Z	35 \| good	4.07 \| good	11.155 \| good	37.953 \| good	0.186 \| good	1.951 \| good	0.194 \| good
2026-03-28T16:00:00.000Z	36 \| good	4.067 \| good	11.177 \| good	39.31 \| good	0.189 \| good	1.644 \| good	0.16 \| good
2026-03-28T17:00:00.000Z	39 \| good	4.065 \| good	12.412 \| good	41.615 \| good	0.196 \| good	1.465 \| good	0.16 \| good
2026-03-28T18:00:00.000Z	39 \| good	3.992 \| good	11.039 \| good	42.359 \| good	0.108 \| good	1.366 \| good	0.175 \| good
2026-03-28T19:00:00.000Z	39 \| good	3.92 \| good	8.441 \| good	42.466 \| good	0.116 \| good	1.534 \| good	0.175 \| good
2026-03-28T20:00:00.000Z	39 \| good	3.843 \| good	9.548 \| good	41.717 \| good	0.111 \| good	1.565 \| good	0.175 \| good
2026-03-28T21:00:00.000Z	39 \| good	3.805 \| good	9.023 \| good	42.317 \| good	0.104 \| good	1.789 \| good	0.21 \| good
2026-03-28T22:00:00.000Z	39 \| good	3.41 \| good	8.417 \| good	42.293 \| good	0.102 \| good	1.937 \| good	0.194 \| good
2026-03-28T23:00:00.000Z	39 \| good	3.371 \| good	9.061 \| good	41.794 \| good	0.103 \| good	2.283 \| good	0.175 \| good
2026-03-29T00:00:00.000Z	39 \| good	3.375 \| good	7.766 \| good	41.84 \| good	0.116 \| good	2.762 \| good	0.175 \| good
2026-03-29T01:00:00.000Z	35 \| good	3.634 \| good	11.392 \| good	37.834 \| good	0.202 \| good	5.302 \| good	0.227 \| good
2026-03-29T02:00:00.000Z	34 \| good	3.661 \| good	9.562 \| good	37.487 \| good	0.191 \| good	6.392 \| good	0.243 \| good
2026-03-29T03:00:00.000Z	28 \| good	3.152 \| good	13.617 \| good	29.885 \| good	0.8 \| good	6.896 \| good	0.232 \| good
2026-03-29T04:00:00.000Z	33 \| good	4.238 \| good	10.789 \| good	35.96 \| good	0.185 \| good	19.76 \| good	0.276 \| good
2026-03-29T05:00:00.000Z	27 \| good	5.464 \| good	12.357 \| good	26.08 \| good	0.282 \| good	23.686 \| good	0.241 \| good
2026-03-29T06:00:00.000Z	27 \| good	5.334 \| good	11.295 \| good	24.807 \| good	0.282 \| good	24.557 \| good	0.241 \| good
2026-03-29T07:00:00.000Z	38 \| good	7.049 \| good	13.636 \| good	25.65 \| good	0.555 \| good	21.033 \| good	0.282 \| good
2026-03-29T08:00:00.000Z	44 \| good	7.967 \| good	15.44 \| good	24.486 \| good	0.369 \| good	27.593 \| good	0.29 \| good
2026-03-29T09:00:00.000Z	44 \| good	8.446 \| good	14.619 \| good	26.5 \| good	0.629 \| good	28.073 \| good	0.325 \| good
2026-03-29T10:00:00.000Z	44 \| good	7.991 \| good	14.644 \| good	22.611 \| good	0.472 \| good	24.128 \| good	0.309 \| good
2026-03-29T11:00:00.000Z	44 \| good	7.877 \| good	19.046 \| good	18.072 \| good	0.677 \| good	24.017 \| good	0.375 \| good
2026-03-29T12:00:00.000Z	44 \| good	7.651 \| good	17.918 \| good	13.421 \| good	0.74 \| good	20.893 \| good	0.387 \| good
2026-03-29T13:00:00.000Z	44 \| good	8.148 \| good	20.431 \| good	12.083 \| good	0.745 \| good	15.956 \| good	0.429 \| good
2026-03-29T14:00:00.000Z	33 \| good	6.171 \| good	18.169 \| good	15.811 \| good	0.491 \| good	8.045 \| good	0.222 \| good
2026-03-29T15:00:00.000Z	27 \| good	5.394 \| good	18.153 \| good	27.666 \| good	0.558 \| good	4.27 \| good	0.205 \| good
2026-03-29T16:00:00.000Z	33 \| good	5.722 \| good	18.533 \| good	30.319 \| good	0.631 \| good	4.493 \| good	0.231 \| good
2026-03-29T17:00:00.000Z	35 \| good	5.622 \| good	17.692 \| good	37.789 \| good	0.55 \| good	4.274 \| good	0.276 \| good
2026-03-29T18:00:00.000Z	36 \| good	5.245 \| good	14.771 \| good	38.769 \| good	0.452 \| good	4.168 \| good	0.224 \| good
2026-03-29T19:00:00.000Z	40 \| good	5.376 \| good	13.021 \| good	43.04 \| good	0.444 \| good	3.471 \| good	0.224 \| good
2026-03-29T20:00:00.000Z	42 \| good	5.241 \| good	13.026 \| good	44.892 \| good	0.447 \| good	2.921 \| good	0.224 \| good
2026-03-29T21:00:00.000Z	43 \| good	5.347 \| good	15.436 \| good	45.714 \| good	0.37 \| good	2.709 \| good	0.224 \| good
2026-03-29T22:00:00.000Z	43 \| good	5.347 \| good	15.436 \| good	45.714 \| good	0.37 \| good	2.709 \| good	0.224 \| good
2026-03-29T23:00:00.000Z	42 \| good	7.107 \| good	31.455 \| good	44.76 \| good	1.926 \| good	8.369 \| good	0.203 \| good
2026-03-30T00:00:00.000Z	38 \| good	6.872 \| good	30.508 \| good	39.773 \| good	1.755 \| good	9.716 \| good	0.212 \| good
2026-03-30T01:00:00.000Z	38 \| good	7.376 \| good	32.525 \| good	37.648 \| good	1.638 \| good	9.166 \| good	0.202 \| good
2026-03-30T02:00:00.000Z	40 \| good	7.33 \| good	32.125 \| good	43.131 \| good	1.521 \| good	8.615 \| good	0.193 \| good
2026-03-30T03:00:00.000Z	40 \| good	7.446 \| good	33.149 \| good	42.703 \| good	1.403 \| good	8.065 \| good	0.183 \| good
2026-03-30T04:00:00.000Z	49 \| good	8.684 \| good	38.193 \| good	40.921 \| good	1.324 \| good	7.055 \| good	0.175 \| good
2026-03-30T05:00:00.000Z	49 \| good	9.006 \| good	39.774 \| good	37.967 \| good	1.246 \| good	6.044 \| good	0.166 \| good
2026-03-30T06:00:00.000Z	44 \| good	7.717 \| good	33.938 \| good	35.372 \| good	1.167 \| good	5.033 \| good	0.158 \| good
2026-03-30T07:00:00.000Z	32 \| good	5.421 \| good	23.58 \| good	35.335 \| good	1.196 \| good	4.631 \| good	0.163 \| good
2026-03-30T08:00:00.000Z	31 \| good	5.117 \| good	22.159 \| good	33.423 \| good	1.225 \| good	4.23 \| good	0.168 \| good
2026-03-30T09:00:00.000Z	30 \| good	5.419 \| good	23.525 \| good	31.666 \| good	1.254 \| good	3.829 \| good	0.174 \| good
2026-03-30T10:00:00.000Z	38 \| good	6.714 \| good	29.794 \| good	16.335 \| good	1.393 \| good	4.65 \| good	0.186 \| good
2026-03-30T11:00:00.000Z	33 \| good	5.768 \| good	24.981 \| good	12.688 \| good	1.532 \| good	5.472 \| good	0.199 \| good
2026-03-30T12:00:00.000Z	44 \| good	8.173 \| good	35.902 \| good	14.365 \| good	1.671 \| good	6.293 \| good	0.212 \| good
2026-03-30T13:00:00.000Z	44 \| good	8.079 \| good	35.179 \| good	17.859 \| good	1.849 \| good	6.635 \| good	0.208 \| good
2026-03-30T14:00:00.000Z	52 \| moderate	9.632 \| good	42.732 \| good	20.974 \| good	2.028 \| good	6.976 \| good	0.204 \| good
2026-03-30T15:00:00.000Z	44 \| good	7.887 \| good	34.611 \| good	28.237 \| good	2.206 \| good	7.318 \| good	0.201 \| good
2026-03-30T16:00:00.000Z	38 \| good	7.375 \| good	32.345 \| good	26.681 \| good	2.314 \| good	6.693 \| good	0.193 \| good
2026-03-30T17:00:00.000Z	38 \| good	7.09 \| good	31.563 \| good	24.454 \| good	2.423 \| good	6.068 \| good	0.186 \| good
2026-03-30T18:00:00.000Z	56 \| moderate	12.236 \| fine	54.832 \| good	30.286 \| good	2.531 \| good	5.444 \| good	0.179 \| good
2026-03-30T19:00:00.000Z	54 \| moderate	11.113 \| good	49.063 \| good	29.249 \| good	2.489 \| good	5.55 \| good	0.179 \| good
2026-03-30T20:00:00.000Z	52 \| moderate	10.374 \| good	45.936 \| good	29.482 \| good	2.447 \| good	5.657 \| good	0.179 \| good
2026-03-30T21:00:00.000Z	54 \| moderate	11.371 \| good	50.773 \| good	27.766 \| good	2.404 \| good	5.764 \| good	0.179 \| good
2026-03-30T22:00:00.000Z	54 \| moderate	10.955 \| good	48.597 \| good	21.333 \| good	2.489 \| good	8.136 \| good	0.19 \| good
2026-03-30T23:00:00.000Z	58 \| moderate	13.391 \| fine	59.632 \| fine	26.218 \| good	2.574 \| good	10.508 \| good	0.201 \| good
2026-03-31T00:00:00.000Z	62 \| moderate	15.015 \| fine	66.891 \| fine	19.562 \| good	2.659 \| good	12.88 \| good	0.213 \| good
2026-03-31T01:00:00.000Z	62 \| moderate	15.035 \| fine	67.39 \| fine	21.404 \| good	2.679 \| good	12.969 \| good	0.212 \| good
2026-03-31T02:00:00.000Z	66 \| moderate	17.085 \| fine	75.366 \| fine	18.274 \| good	2.699 \| good	13.058 \| good	0.211 \| good
2026-03-31T03:00:00.000Z	66 \| moderate	16.654 \| fine	74.213 \| fine	23.745 \| good	2.72 \| good	13.147 \| good	0.211 \| good
2026-03-31T04:00:00.000Z	66 \| moderate	17.068 \| fine	75.788 \| fine	23.234 \| good	2.574 \| good	11.995 \| good	0.203 \| good
2026-03-31T05:00:00.000Z	64 \| moderate	15.926 \| fine	70.98 \| fine	22.836 \| good	2.427 \| good	10.842 \| good	0.195 \| good
2026-03-31T06:00:00.000Z	52 \| moderate	10.054 \| good	10.456 \| good	36.44 \| good	2.295 \| good	9.743 \| good	0.187 \| good
2026-03-31T07:00:00.000Z	62 \| moderate	14.947 \| fine	67.182 \| fine	15.684 \| good	2.164 \| good	8.712 \| good	0.179 \| good
2026-03-31T08:00:00.000Z	62 \| moderate	14.697 \| fine	65.604 \| fine	13.989 \| good	2.046 \| good	7.735 \| good	0.171 \| good
2026-03-31T09:00:00.000Z	60 \| moderate	14.083 \| fine	63.455 \| fine	12.599 \| good	1.929 \| good	6.757 \| good	0.163 \| good
2026-03-31T10:00:00.000Z	38 \| good	7.393 \| good	32.696 \| good	21.278 \| good	1.902 \| good	7.479 \| good	0.165 \| good
2026-03-31T11:00:00.000Z	38 \| good	6.577 \| good	29.085 \| good	18.911 \| good	1.876 \| good	8.201 \| good	0.167 \| good
2026-03-31T12:00:00.000Z	49 \| good	9.299 \| good	9.759 \| good	33.713 \| good	1.857 \| good	8.92 \| good	0.169 \| good
2026-03-31T13:00:00.000Z	49 \| good	9.352 \| good	9.802 \| good	33.449 \| good	1.951 \| good	9.102 \| good	0.177 \| good
2026-03-31T14:00:00.000Z	52 \| moderate	9.944 \| good	10.39 \| good	33.184 \| good	2.046 \| good	9.285 \| good	0.184 \| good
2026-03-31T15:00:00.000Z	52 \| moderate	9.998 \| good	10.466 \| good	32.919 \| good	2.14 \| good	9.468 \| good	0.191 \| good
2026-03-31T16:00:00.000Z	52 \| moderate	9.602 \| good	10.089 \| good	36.323 \| good	2.121 \| good	8.452 \| good	0.186 \| good
2026-03-31T17:00:00.000Z	58 \| moderate	13.18 \| fine	59.442 \| fine	29.446 \| good	2.088 \| good	7.419 \| good	0.181 \| good
2026-03-31T18:00:00.000Z	49 \| good	9.469 \| good	9.984 \| good	43.13 \| good	2.082 \| good	6.42 \| good	0.176 \| good
2026-03-31T19:00:00.000Z	52 \| moderate	9.58 \| good	10.148 \| good	44.397 \| good	2.01 \| good	6.635 \| good	0.175 \| good
2026-03-31T20:00:00.000Z	52 \| moderate	9.836 \| good	10.523 \| good	45.665 \| good	1.938 \| good	6.849 \| good	0.175 \| good
2026-03-31T21:00:00.000Z	52 \| moderate	10.132 \| good	10.837 \| good	46.933 \| good	1.866 \| good	7.063 \| good	0.175 \| good
2026-03-31T22:00:00.000Z	52 \| moderate	9.971 \| good	10.642 \| good	45.333 \| good	1.826 \| good	8.662 \| good	0.181 \| good

Fairfield

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Fairfield, Connecticut air quality map: Track AQI near you

0.24ppm

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 01:00:00 on 2026-03-29.

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 03:00:00 on 2026-03-29.

What is the current air quality in Fairfield, Connecticut?

The current air quality in Fairfield, Connecticut is 43, 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 5.347 μg/m³.

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

The current PM₁₀ concentration at Fairfield, Connecticut is 15.436 μg/m³.

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

The current carbon monoxide (CO) concentration at Fairfield, Connecticut is 0.224 ppm.

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

The current sulfur dioxide (SO₂) concentration at Fairfield, Connecticut is 0.37 ppb.

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

The current ozone (O₃) concentration at Fairfield, Connecticut is 45.714 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Fairfield, Connecticut is 2.709 ppb.

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