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

The PM10 concentration in Derby, Connecticut is 2.616 μg/m3 at the moment.

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

Currently, Derby, Connecticut has a sulfur dioxide (SO2) concentration of 0.524 ppb.

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

The current ozone (O3) level in Derby, Connecticut at the moment is 23.462 ppm.

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

Nitrogen dioxide (NO2) level in Derby, Connecticut at the moment is 3.401 ppb.

Live air quality index in Derby, Connecticut today

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

PM2.5 levels in Derby, Connecticut are currently 0.787 μg/m3.

Stay updated with real-time air quality in Derby, 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

Derby, Connecticut

Last updated: ... (Local time)

Major air pollutants in Derby, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

0.79 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

2.62 μg/m³

155

255

425

605+

Ozone (O₃)

23.46 ppb

201

201+

Sulfur Dioxide (SO₂)

0.52 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

3.40 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.27 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Derby, Connecticut

Get Live Pollen Counts

Derby, Connecticut

Scroll To Air Quality Map

Track live Derby, Connecticut air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-26T23:00:00.000Z	29 \| good	3.604 \| good	15.298 \| good	30.812 \| good	0.1 \| good	2.383 \| good	0.193 \| good
2026-09-27T00:00:00.000Z	29 \| good	3.055 \| good	16.404 \| good	30.875 \| good	0.137 \| good	2.373 \| good	0.217 \| good
2026-09-27T01:00:00.000Z	27 \| good	3.177 \| good	7.875 \| good	28.872 \| good	0.152 \| good	2.131 \| good	0.217 \| good
2026-09-27T02:00:00.000Z	28 \| good	3.344 \| good	10.889 \| good	29.75 \| good	0.137 \| good	1.755 \| good	0.217 \| good
2026-09-27T03:00:00.000Z	27 \| good	1.365 \| good	5.31 \| good	28.645 \| good	0.112 \| good	1.262 \| good	0.131 \| good
2026-09-27T04:00:00.000Z	28 \| good	3.281 \| good	6.175 \| good	30.335 \| good	0.347 \| good	2.326 \| good	0.217 \| good
2026-09-27T05:00:00.000Z	28 \| good	2.891 \| good	6.322 \| good	30.203 \| good	0.405 \| good	2.203 \| good	0.217 \| good
2026-09-27T06:00:00.000Z	27 \| good	2.748 \| good	7.457 \| good	29.172 \| good	0.509 \| good	1.483 \| good	0.217 \| good
2026-09-27T07:00:00.000Z	27 \| good	2.773 \| good	5.524 \| good	29.096 \| good	0.509 \| good	0.977 \| good	0.222 \| good
2026-09-27T08:00:00.000Z	27 \| good	1.548 \| good	4.51 \| good	28.63 \| good	0.365 \| good	1.363 \| good	0.217 \| good
2026-09-27T09:00:00.000Z	25 \| good	1.063 \| good	4.438 \| good	27.413 \| good	0.364 \| good	1.298 \| good	0.193 \| good
2026-09-27T10:00:00.000Z	28 \| good	0.749 \| good	2.619 \| good	29.721 \| good	0.347 \| good	1.396 \| good	0.193 \| good
2026-09-27T11:00:00.000Z	28 \| good	0.507 \| good	2.497 \| good	30.345 \| good	0.347 \| good	1.363 \| good	0.193 \| good
2026-09-27T12:00:00.000Z	28 \| good	0.669 \| good	4.131 \| good	30.102 \| good	0.398 \| good	1.711 \| good	0.193 \| good
2026-09-27T13:00:00.000Z	27 \| good	0.51 \| good	1.78 \| good	29.369 \| good	0.365 \| good	1.739 \| good	0.193 \| good
2026-09-27T14:00:00.000Z	29 \| good	0.542 \| good	7.777 \| good	30.841 \| good	0.347 \| good	1.624 \| good	0.193 \| good
2026-09-27T15:00:00.000Z	26 \| good	0.705 \| good	3.668 \| good	28.493 \| good	0.352 \| good	1.903 \| good	0.193 \| good
2026-09-27T16:00:00.000Z	28 \| good	1.015 \| good	2.957 \| good	29.512 \| good	0.402 \| good	1.814 \| good	0.193 \| good
2026-09-27T17:00:00.000Z	25 \| good	1.012 \| good	6.486 \| good	26.901 \| good	0.4 \| good	1.941 \| good	0.193 \| good
2026-09-27T18:00:00.000Z	24 \| good	0.614 \| good	2.644 \| good	26.442 \| good	0.613 \| good	2.282 \| good	0.227 \| good
2026-09-27T19:00:00.000Z	24 \| good	0.728 \| good	5.784 \| good	26.089 \| good	0.183 \| good	2.292 \| good	0.239 \| good
2026-09-27T20:00:00.000Z	25 \| good	0.89 \| good	7.337 \| good	27.006 \| good	0.38 \| good	2.443 \| good	0.239 \| good
2026-09-27T21:00:00.000Z	25 \| good	0.839 \| good	3.831 \| good	26.991 \| good	0.332 \| good	2.627 \| good	0.251 \| good
2026-09-27T22:00:00.000Z	23 \| good	0.681 \| good	6.535 \| good	25.388 \| good	0.364 \| good	2.637 \| good	0.251 \| good
2026-09-27T23:00:00.000Z	23 \| good	0.899 \| good	2.91 \| good	24.64 \| good	0.369 \| good	2.5 \| good	0.251 \| good
2026-09-28T00:00:00.000Z	23 \| good	0.949 \| good	3.197 \| good	25.39 \| good	0.502 \| good	2.438 \| good	0.205 \| good
2026-09-28T01:00:00.000Z	22 \| good	0.905 \| good	2.389 \| good	24.34 \| good	0.332 \| good	2.443 \| good	0.205 \| good
2026-09-28T02:00:00.000Z	22 \| good	0.856 \| good	1.886 \| good	24.059 \| good	0.348 \| good	2.352 \| good	0.205 \| good
2026-09-28T03:00:00.000Z	31 \| good	4.58 \| good	20.002 \| good	33.629 \| good	0.182 \| good	3.032 \| good	0.142 \| good
2026-09-28T04:00:00.000Z	25 \| good	0.858 \| good	3.932 \| good	26.555 \| good	0.33 \| good	2.968 \| good	0.193 \| good
2026-09-28T05:00:00.000Z	24 \| good	0.791 \| good	3.9 \| good	26.018 \| good	0.575 \| good	2.838 \| good	0.193 \| good
2026-09-28T06:00:00.000Z	24 \| good	0.74 \| good	3.149 \| good	25.506 \| good	0.348 \| good	2.339 \| good	0.176 \| good
2026-09-28T07:00:00.000Z	25 \| good	0.669 \| good	2.172 \| good	27.183 \| good	0.365 \| good	1.654 \| good	0.168 \| good
2026-09-28T08:00:00.000Z	23 \| good	0.637 \| good	2.182 \| good	25.19 \| good	0.575 \| good	2.392 \| good	0.176 \| good
2026-09-28T09:00:00.000Z	23 \| good	0.661 \| good	2.209 \| good	25.016 \| good	0.598 \| good	2.626 \| good	0.176 \| good
2026-09-28T10:00:00.000Z	24 \| good	0.672 \| good	2.966 \| good	26.461 \| good	0.357 \| good	3.303 \| good	0.176 \| good
2026-09-28T11:00:00.000Z	25 \| good	1.096 \| good	3.269 \| good	26.73 \| good	0.348 \| good	3.74 \| good	0.174 \| good
2026-09-28T12:00:00.000Z	26 \| good	0.775 \| good	2.083 \| good	28.01 \| good	0.536 \| good	4.302 \| good	0.205 \| good
2026-09-28T13:00:00.000Z	25 \| good	1.029 \| good	3.786 \| good	27.27 \| good	0.555 \| good	2.793 \| good	0.206 \| good
2026-09-28T14:00:00.000Z	25 \| good	1.05 \| good	5.394 \| good	26.936 \| good	0.388 \| good	4.786 \| good	0.205 \| good
2026-09-28T15:00:00.000Z	23 \| good	1.07 \| good	3.39 \| good	25.037 \| good	0.335 \| good	4.949 \| good	0.205 \| good
2026-09-28T16:00:00.000Z	22 \| good	1.075 \| good	6.216 \| good	24.346 \| good	0.554 \| good	4.459 \| good	0.218 \| good
2026-09-28T17:00:00.000Z	21 \| good	0.939 \| good	3.466 \| good	23.406 \| good	0.789 \| good	3.989 \| good	0.218 \| good
2026-09-28T18:00:00.000Z	21 \| good	0.873 \| good	4.409 \| good	23.122 \| good	0.576 \| good	3.448 \| good	0.239 \| good
2026-09-28T19:00:00.000Z	22 \| good	0.782 \| good	1.767 \| good	24.028 \| good	0.549 \| good	3.417 \| good	0.239 \| good
2026-09-28T20:00:00.000Z	21 \| good	0.77 \| good	2.695 \| good	23.369 \| good	0.786 \| good	3.366 \| good	0.252 \| good
2026-09-28T21:00:00.000Z	20 \| good	0.802 \| good	2.812 \| good	22.132 \| good	0.529 \| good	3.294 \| good	0.252 \| good
2026-09-28T22:00:00.000Z	19 \| good	0.838 \| good	2.107 \| good	20.562 \| good	0.581 \| good	4.001 \| good	0.264 \| good
2026-09-28T22:00:00.000Z	21 \| good	0.787 \| good	2.616 \| good	23.462 \| good	0.524 \| good	3.401 \| good	0.268 \| good
2026-09-28T23:00:00.000Z	19 \| good	1.169 \| good	5 \| good	19.547 \| good	0.153 \| good	3.866 \| good	0.163 \| good
2026-09-29T00:00:00.000Z	21 \| good	2.935 \| good	12.295 \| good	23.328 \| good	0.16 \| good	4.218 \| good	0.163 \| good
2026-09-29T01:00:00.000Z	21 \| good	3.095 \| good	12.921 \| good	23.259 \| good	0.166 \| good	4.457 \| good	0.164 \| good
2026-09-29T02:00:00.000Z	21 \| good	3.086 \| good	12.276 \| good	23.281 \| good	0.172 \| good	4.66 \| good	0.163 \| good
2026-09-29T03:00:00.000Z	19 \| good	3.451 \| good	15.155 \| good	19.973 \| good	0.18 \| good	4.923 \| good	0.165 \| good
2026-09-29T04:00:00.000Z	22 \| good	3.784 \| good	16.19 \| good	18.473 \| good	0.185 \| good	4.944 \| good	0.166 \| good
2026-09-29T05:00:00.000Z	22 \| good	4.082 \| good	17.932 \| good	15.126 \| good	0.19 \| good	4.796 \| good	0.165 \| good
2026-09-29T06:00:00.000Z	22 \| good	4.014 \| good	17.579 \| good	12.935 \| good	0.199 \| good	4.759 \| good	0.164 \| good
2026-09-29T07:00:00.000Z	22 \| good	3.857 \| good	16.768 \| good	11.505 \| good	0.208 \| good	4.809 \| good	0.163 \| good
2026-09-29T08:00:00.000Z	22 \| good	3.936 \| good	17.272 \| good	10.203 \| good	0.215 \| good	4.981 \| good	0.163 \| good
2026-09-29T09:00:00.000Z	16 \| good	3.187 \| good	14.135 \| good	7.955 \| good	0.223 \| good	5.311 \| good	0.164 \| good
2026-09-29T10:00:00.000Z	22 \| good	3.639 \| good	16 \| good	6.966 \| good	0.232 \| good	5.809 \| good	0.168 \| good
2026-09-29T11:00:00.000Z	22 \| good	3.587 \| good	15.961 \| good	9.195 \| good	0.249 \| good	6.801 \| good	0.178 \| good
2026-09-29T12:00:00.000Z	16 \| good	3.391 \| good	14.951 \| good	14.114 \| good	0.267 \| good	7.02 \| good	0.196 \| good
2026-09-29T13:00:00.000Z	19 \| good	3.1 \| good	12.921 \| good	19.521 \| good	0.265 \| good	4.921 \| good	0.186 \| good
2026-09-29T14:00:00.000Z	23 \| good	2.645 \| good	10.879 \| good	24.992 \| good	0.262 \| good	3.323 \| good	0.173 \| good
2026-09-29T15:00:00.000Z	26 \| good	2.22 \| good	9.039 \| good	28.05 \| good	0.248 \| good	2.35 \| good	0.159 \| good
2026-09-29T16:00:00.000Z	27 \| good	1.823 \| good	7.489 \| good	29.294 \| good	0.25 \| good	2.058 \| good	0.155 \| good
2026-09-29T17:00:00.000Z	27 \| good	1.63 \| good	6.684 \| good	29.052 \| good	0.262 \| good	2.078 \| good	0.155 \| good
2026-09-29T18:00:00.000Z	26 \| good	1.763 \| good	7.591 \| good	28.283 \| good	0.28 \| good	2.049 \| good	0.154 \| good
2026-09-29T19:00:00.000Z	28 \| good	1.726 \| good	7.107 \| good	29.552 \| good	0.281 \| good	1.955 \| good	0.154 \| good
2026-09-29T20:00:00.000Z	27 \| good	1.926 \| good	8.068 \| good	29.244 \| good	0.282 \| good	1.917 \| good	0.154 \| good
2026-09-29T21:00:00.000Z	25 \| good	2.364 \| good	9.694 \| good	26.576 \| good	0.284 \| good	2.196 \| good	0.158 \| good
2026-09-29T22:00:00.000Z	22 \| good	2.97 \| good	12.174 \| good	23.959 \| good	0.293 \| good	3.846 \| good	0.177 \| good
2026-09-29T23:00:00.000Z	22 \| good	3.539 \| good	15.632 \| good	20.277 \| good	0.321 \| good	6.645 \| good	0.203 \| good
2026-09-30T00:00:00.000Z	38 \| good	6.671 \| good	29.618 \| good	22.836 \| good	0.353 \| good	8.249 \| good	0.216 \| good
2026-09-30T01:00:00.000Z	38 \| good	7.058 \| good	31.319 \| good	21.174 \| good	0.376 \| good	8.983 \| good	0.219 \| good
2026-09-30T02:00:00.000Z	38 \| good	7.079 \| good	31.406 \| good	20.571 \| good	0.391 \| good	9.071 \| good	0.218 \| good
2026-09-30T03:00:00.000Z	33 \| good	6.206 \| good	27.472 \| good	20.757 \| good	0.399 \| good	8.548 \| good	0.212 \| good
2026-09-30T04:00:00.000Z	33 \| good	5.789 \| good	25.101 \| good	20.27 \| good	0.396 \| good	7.586 \| good	0.205 \| good
2026-09-30T05:00:00.000Z	27 \| good	4.931 \| good	21.105 \| good	20.327 \| good	0.393 \| good	6.64 \| good	0.197 \| good
2026-09-30T06:00:00.000Z	27 \| good	4.709 \| good	20.359 \| good	19.782 \| good	0.4 \| good	6.281 \| good	0.192 \| good
2026-09-30T07:00:00.000Z	27 \| good	4.668 \| good	20.272 \| good	18.076 \| good	0.409 \| good	6.305 \| good	0.19 \| good
2026-09-30T08:00:00.000Z	27 \| good	4.863 \| good	21.135 \| good	17.276 \| good	0.42 \| good	6.33 \| good	0.189 \| good
2026-09-30T09:00:00.000Z	22 \| good	4.082 \| good	17.783 \| good	13.863 \| good	0.435 \| good	6.189 \| good	0.188 \| good
2026-09-30T10:00:00.000Z	27 \| good	4.799 \| good	20.648 \| good	14.286 \| good	0.453 \| good	6.231 \| good	0.188 \| good
2026-09-30T11:00:00.000Z	27 \| good	5.016 \| good	21.546 \| good	13.427 \| good	0.48 \| good	6.737 \| good	0.196 \| good
2026-09-30T12:00:00.000Z	27 \| good	5.384 \| good	23.174 \| good	17.222 \| good	0.487 \| good	6.141 \| good	0.215 \| good
2026-09-30T13:00:00.000Z	27 \| good	4.922 \| good	21.21 \| good	22.844 \| good	0.549 \| good	4.171 \| good	0.202 \| good
2026-09-30T14:00:00.000Z	26 \| good	4.243 \| good	18.478 \| good	28.249 \| good	0.608 \| good	2.808 \| good	0.186 \| good
2026-09-30T15:00:00.000Z	29 \| good	3.703 \| good	16.143 \| good	30.823 \| good	0.575 \| good	1.891 \| good	0.172 \| good
2026-09-30T16:00:00.000Z	30 \| good	3.406 \| good	15.076 \| good	32.113 \| good	0.491 \| good	1.441 \| good	0.16 \| good
2026-09-30T17:00:00.000Z	31 \| good	3.312 \| good	14.7 \| good	34.118 \| good	0.441 \| good	1.461 \| good	0.157 \| good
2026-09-30T18:00:00.000Z	32 \| good	3.42 \| good	15.282 \| good	34.813 \| good	0.405 \| good	1.595 \| good	0.155 \| good
2026-09-30T19:00:00.000Z	33 \| good	3.328 \| good	14.546 \| good	36.423 \| good	0.386 \| good	1.921 \| good	0.155 \| good
2026-09-30T20:00:00.000Z	34 \| good	2.547 \| good	10.176 \| good	36.879 \| good	0.373 \| good	2.416 \| good	0.157 \| good
2026-09-30T21:00:00.000Z	32 \| good	3.666 \| good	16.273 \| good	34.528 \| good	0.373 \| good	3.495 \| good	0.166 \| good
2026-09-30T22:00:00.000Z	31 \| good	5.248 \| good	22.609 \| good	33.049 \| good	0.408 \| good	7.816 \| good	0.211 \| good

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

0.27ppm

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

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Frequently asked questions

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

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

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

In the past 24 hours, the air quality in Derby, Connecticut was at its worst at 03:00:00 on 2026-09-28.

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

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

What is the AQI in Derby, Connecticut right now?

As of now, the AQI in Derby, Connecticut is 21, indicating Good conditions.

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

Derby, Connecticut air has the highest levels of O3.

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

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

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

PM_2.5 levels in Derby, Connecticut are currently 0.787 μg/m³.

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

The PM₁₀ concentration in Derby, Connecticut is 2.616 μg/m³ at the moment.

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

The current carbon monoxide (CO) concentration in Derby, Connecticut is 0.268 ppm.

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

Currently, Derby, Connecticut has a sulfur dioxide (SO₂) concentration of 0.524 ppb.

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

The current ozone (O₃) level in Derby, Connecticut at the moment is 23.462 ppm.

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

Nitrogen dioxide (NO₂) level in Derby, Connecticut at the moment is 3.401 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-09-26T23:00:00.000Z	29 \| good	3.604 \| good	15.298 \| good	30.812 \| good	0.1 \| good	2.383 \| good	0.193 \| good
2026-09-27T00:00:00.000Z	29 \| good	3.055 \| good	16.404 \| good	30.875 \| good	0.137 \| good	2.373 \| good	0.217 \| good
2026-09-27T01:00:00.000Z	27 \| good	3.177 \| good	7.875 \| good	28.872 \| good	0.152 \| good	2.131 \| good	0.217 \| good
2026-09-27T02:00:00.000Z	28 \| good	3.344 \| good	10.889 \| good	29.75 \| good	0.137 \| good	1.755 \| good	0.217 \| good
2026-09-27T03:00:00.000Z	27 \| good	1.365 \| good	5.31 \| good	28.645 \| good	0.112 \| good	1.262 \| good	0.131 \| good
2026-09-27T04:00:00.000Z	28 \| good	3.281 \| good	6.175 \| good	30.335 \| good	0.347 \| good	2.326 \| good	0.217 \| good
2026-09-27T05:00:00.000Z	28 \| good	2.891 \| good	6.322 \| good	30.203 \| good	0.405 \| good	2.203 \| good	0.217 \| good
2026-09-27T06:00:00.000Z	27 \| good	2.748 \| good	7.457 \| good	29.172 \| good	0.509 \| good	1.483 \| good	0.217 \| good
2026-09-27T07:00:00.000Z	27 \| good	2.773 \| good	5.524 \| good	29.096 \| good	0.509 \| good	0.977 \| good	0.222 \| good
2026-09-27T08:00:00.000Z	27 \| good	1.548 \| good	4.51 \| good	28.63 \| good	0.365 \| good	1.363 \| good	0.217 \| good
2026-09-27T09:00:00.000Z	25 \| good	1.063 \| good	4.438 \| good	27.413 \| good	0.364 \| good	1.298 \| good	0.193 \| good
2026-09-27T10:00:00.000Z	28 \| good	0.749 \| good	2.619 \| good	29.721 \| good	0.347 \| good	1.396 \| good	0.193 \| good
2026-09-27T11:00:00.000Z	28 \| good	0.507 \| good	2.497 \| good	30.345 \| good	0.347 \| good	1.363 \| good	0.193 \| good
2026-09-27T12:00:00.000Z	28 \| good	0.669 \| good	4.131 \| good	30.102 \| good	0.398 \| good	1.711 \| good	0.193 \| good
2026-09-27T13:00:00.000Z	27 \| good	0.51 \| good	1.78 \| good	29.369 \| good	0.365 \| good	1.739 \| good	0.193 \| good
2026-09-27T14:00:00.000Z	29 \| good	0.542 \| good	7.777 \| good	30.841 \| good	0.347 \| good	1.624 \| good	0.193 \| good
2026-09-27T15:00:00.000Z	26 \| good	0.705 \| good	3.668 \| good	28.493 \| good	0.352 \| good	1.903 \| good	0.193 \| good
2026-09-27T16:00:00.000Z	28 \| good	1.015 \| good	2.957 \| good	29.512 \| good	0.402 \| good	1.814 \| good	0.193 \| good
2026-09-27T17:00:00.000Z	25 \| good	1.012 \| good	6.486 \| good	26.901 \| good	0.4 \| good	1.941 \| good	0.193 \| good
2026-09-27T18:00:00.000Z	24 \| good	0.614 \| good	2.644 \| good	26.442 \| good	0.613 \| good	2.282 \| good	0.227 \| good
2026-09-27T19:00:00.000Z	24 \| good	0.728 \| good	5.784 \| good	26.089 \| good	0.183 \| good	2.292 \| good	0.239 \| good
2026-09-27T20:00:00.000Z	25 \| good	0.89 \| good	7.337 \| good	27.006 \| good	0.38 \| good	2.443 \| good	0.239 \| good
2026-09-27T21:00:00.000Z	25 \| good	0.839 \| good	3.831 \| good	26.991 \| good	0.332 \| good	2.627 \| good	0.251 \| good
2026-09-27T22:00:00.000Z	23 \| good	0.681 \| good	6.535 \| good	25.388 \| good	0.364 \| good	2.637 \| good	0.251 \| good
2026-09-27T23:00:00.000Z	23 \| good	0.899 \| good	2.91 \| good	24.64 \| good	0.369 \| good	2.5 \| good	0.251 \| good
2026-09-28T00:00:00.000Z	23 \| good	0.949 \| good	3.197 \| good	25.39 \| good	0.502 \| good	2.438 \| good	0.205 \| good
2026-09-28T01:00:00.000Z	22 \| good	0.905 \| good	2.389 \| good	24.34 \| good	0.332 \| good	2.443 \| good	0.205 \| good
2026-09-28T02:00:00.000Z	22 \| good	0.856 \| good	1.886 \| good	24.059 \| good	0.348 \| good	2.352 \| good	0.205 \| good
2026-09-28T03:00:00.000Z	31 \| good	4.58 \| good	20.002 \| good	33.629 \| good	0.182 \| good	3.032 \| good	0.142 \| good
2026-09-28T04:00:00.000Z	25 \| good	0.858 \| good	3.932 \| good	26.555 \| good	0.33 \| good	2.968 \| good	0.193 \| good
2026-09-28T05:00:00.000Z	24 \| good	0.791 \| good	3.9 \| good	26.018 \| good	0.575 \| good	2.838 \| good	0.193 \| good
2026-09-28T06:00:00.000Z	24 \| good	0.74 \| good	3.149 \| good	25.506 \| good	0.348 \| good	2.339 \| good	0.176 \| good
2026-09-28T07:00:00.000Z	25 \| good	0.669 \| good	2.172 \| good	27.183 \| good	0.365 \| good	1.654 \| good	0.168 \| good
2026-09-28T08:00:00.000Z	23 \| good	0.637 \| good	2.182 \| good	25.19 \| good	0.575 \| good	2.392 \| good	0.176 \| good
2026-09-28T09:00:00.000Z	23 \| good	0.661 \| good	2.209 \| good	25.016 \| good	0.598 \| good	2.626 \| good	0.176 \| good
2026-09-28T10:00:00.000Z	24 \| good	0.672 \| good	2.966 \| good	26.461 \| good	0.357 \| good	3.303 \| good	0.176 \| good
2026-09-28T11:00:00.000Z	25 \| good	1.096 \| good	3.269 \| good	26.73 \| good	0.348 \| good	3.74 \| good	0.174 \| good
2026-09-28T12:00:00.000Z	26 \| good	0.775 \| good	2.083 \| good	28.01 \| good	0.536 \| good	4.302 \| good	0.205 \| good
2026-09-28T13:00:00.000Z	25 \| good	1.029 \| good	3.786 \| good	27.27 \| good	0.555 \| good	2.793 \| good	0.206 \| good
2026-09-28T14:00:00.000Z	25 \| good	1.05 \| good	5.394 \| good	26.936 \| good	0.388 \| good	4.786 \| good	0.205 \| good
2026-09-28T15:00:00.000Z	23 \| good	1.07 \| good	3.39 \| good	25.037 \| good	0.335 \| good	4.949 \| good	0.205 \| good
2026-09-28T16:00:00.000Z	22 \| good	1.075 \| good	6.216 \| good	24.346 \| good	0.554 \| good	4.459 \| good	0.218 \| good
2026-09-28T17:00:00.000Z	21 \| good	0.939 \| good	3.466 \| good	23.406 \| good	0.789 \| good	3.989 \| good	0.218 \| good
2026-09-28T18:00:00.000Z	21 \| good	0.873 \| good	4.409 \| good	23.122 \| good	0.576 \| good	3.448 \| good	0.239 \| good
2026-09-28T19:00:00.000Z	22 \| good	0.782 \| good	1.767 \| good	24.028 \| good	0.549 \| good	3.417 \| good	0.239 \| good
2026-09-28T20:00:00.000Z	21 \| good	0.77 \| good	2.695 \| good	23.369 \| good	0.786 \| good	3.366 \| good	0.252 \| good
2026-09-28T21:00:00.000Z	20 \| good	0.802 \| good	2.812 \| good	22.132 \| good	0.529 \| good	3.294 \| good	0.252 \| good
2026-09-28T22:00:00.000Z	19 \| good	0.838 \| good	2.107 \| good	20.562 \| good	0.581 \| good	4.001 \| good	0.264 \| good
2026-09-28T22:00:00.000Z	21 \| good	0.787 \| good	2.616 \| good	23.462 \| good	0.524 \| good	3.401 \| good	0.268 \| good
2026-09-28T23:00:00.000Z	19 \| good	1.169 \| good	5 \| good	19.547 \| good	0.153 \| good	3.866 \| good	0.163 \| good
2026-09-29T00:00:00.000Z	21 \| good	2.935 \| good	12.295 \| good	23.328 \| good	0.16 \| good	4.218 \| good	0.163 \| good
2026-09-29T01:00:00.000Z	21 \| good	3.095 \| good	12.921 \| good	23.259 \| good	0.166 \| good	4.457 \| good	0.164 \| good
2026-09-29T02:00:00.000Z	21 \| good	3.086 \| good	12.276 \| good	23.281 \| good	0.172 \| good	4.66 \| good	0.163 \| good
2026-09-29T03:00:00.000Z	19 \| good	3.451 \| good	15.155 \| good	19.973 \| good	0.18 \| good	4.923 \| good	0.165 \| good
2026-09-29T04:00:00.000Z	22 \| good	3.784 \| good	16.19 \| good	18.473 \| good	0.185 \| good	4.944 \| good	0.166 \| good
2026-09-29T05:00:00.000Z	22 \| good	4.082 \| good	17.932 \| good	15.126 \| good	0.19 \| good	4.796 \| good	0.165 \| good
2026-09-29T06:00:00.000Z	22 \| good	4.014 \| good	17.579 \| good	12.935 \| good	0.199 \| good	4.759 \| good	0.164 \| good
2026-09-29T07:00:00.000Z	22 \| good	3.857 \| good	16.768 \| good	11.505 \| good	0.208 \| good	4.809 \| good	0.163 \| good
2026-09-29T08:00:00.000Z	22 \| good	3.936 \| good	17.272 \| good	10.203 \| good	0.215 \| good	4.981 \| good	0.163 \| good
2026-09-29T09:00:00.000Z	16 \| good	3.187 \| good	14.135 \| good	7.955 \| good	0.223 \| good	5.311 \| good	0.164 \| good
2026-09-29T10:00:00.000Z	22 \| good	3.639 \| good	16 \| good	6.966 \| good	0.232 \| good	5.809 \| good	0.168 \| good
2026-09-29T11:00:00.000Z	22 \| good	3.587 \| good	15.961 \| good	9.195 \| good	0.249 \| good	6.801 \| good	0.178 \| good
2026-09-29T12:00:00.000Z	16 \| good	3.391 \| good	14.951 \| good	14.114 \| good	0.267 \| good	7.02 \| good	0.196 \| good
2026-09-29T13:00:00.000Z	19 \| good	3.1 \| good	12.921 \| good	19.521 \| good	0.265 \| good	4.921 \| good	0.186 \| good
2026-09-29T14:00:00.000Z	23 \| good	2.645 \| good	10.879 \| good	24.992 \| good	0.262 \| good	3.323 \| good	0.173 \| good
2026-09-29T15:00:00.000Z	26 \| good	2.22 \| good	9.039 \| good	28.05 \| good	0.248 \| good	2.35 \| good	0.159 \| good
2026-09-29T16:00:00.000Z	27 \| good	1.823 \| good	7.489 \| good	29.294 \| good	0.25 \| good	2.058 \| good	0.155 \| good
2026-09-29T17:00:00.000Z	27 \| good	1.63 \| good	6.684 \| good	29.052 \| good	0.262 \| good	2.078 \| good	0.155 \| good
2026-09-29T18:00:00.000Z	26 \| good	1.763 \| good	7.591 \| good	28.283 \| good	0.28 \| good	2.049 \| good	0.154 \| good
2026-09-29T19:00:00.000Z	28 \| good	1.726 \| good	7.107 \| good	29.552 \| good	0.281 \| good	1.955 \| good	0.154 \| good
2026-09-29T20:00:00.000Z	27 \| good	1.926 \| good	8.068 \| good	29.244 \| good	0.282 \| good	1.917 \| good	0.154 \| good
2026-09-29T21:00:00.000Z	25 \| good	2.364 \| good	9.694 \| good	26.576 \| good	0.284 \| good	2.196 \| good	0.158 \| good
2026-09-29T22:00:00.000Z	22 \| good	2.97 \| good	12.174 \| good	23.959 \| good	0.293 \| good	3.846 \| good	0.177 \| good
2026-09-29T23:00:00.000Z	22 \| good	3.539 \| good	15.632 \| good	20.277 \| good	0.321 \| good	6.645 \| good	0.203 \| good
2026-09-30T00:00:00.000Z	38 \| good	6.671 \| good	29.618 \| good	22.836 \| good	0.353 \| good	8.249 \| good	0.216 \| good
2026-09-30T01:00:00.000Z	38 \| good	7.058 \| good	31.319 \| good	21.174 \| good	0.376 \| good	8.983 \| good	0.219 \| good
2026-09-30T02:00:00.000Z	38 \| good	7.079 \| good	31.406 \| good	20.571 \| good	0.391 \| good	9.071 \| good	0.218 \| good
2026-09-30T03:00:00.000Z	33 \| good	6.206 \| good	27.472 \| good	20.757 \| good	0.399 \| good	8.548 \| good	0.212 \| good
2026-09-30T04:00:00.000Z	33 \| good	5.789 \| good	25.101 \| good	20.27 \| good	0.396 \| good	7.586 \| good	0.205 \| good
2026-09-30T05:00:00.000Z	27 \| good	4.931 \| good	21.105 \| good	20.327 \| good	0.393 \| good	6.64 \| good	0.197 \| good
2026-09-30T06:00:00.000Z	27 \| good	4.709 \| good	20.359 \| good	19.782 \| good	0.4 \| good	6.281 \| good	0.192 \| good
2026-09-30T07:00:00.000Z	27 \| good	4.668 \| good	20.272 \| good	18.076 \| good	0.409 \| good	6.305 \| good	0.19 \| good
2026-09-30T08:00:00.000Z	27 \| good	4.863 \| good	21.135 \| good	17.276 \| good	0.42 \| good	6.33 \| good	0.189 \| good
2026-09-30T09:00:00.000Z	22 \| good	4.082 \| good	17.783 \| good	13.863 \| good	0.435 \| good	6.189 \| good	0.188 \| good
2026-09-30T10:00:00.000Z	27 \| good	4.799 \| good	20.648 \| good	14.286 \| good	0.453 \| good	6.231 \| good	0.188 \| good
2026-09-30T11:00:00.000Z	27 \| good	5.016 \| good	21.546 \| good	13.427 \| good	0.48 \| good	6.737 \| good	0.196 \| good
2026-09-30T12:00:00.000Z	27 \| good	5.384 \| good	23.174 \| good	17.222 \| good	0.487 \| good	6.141 \| good	0.215 \| good
2026-09-30T13:00:00.000Z	27 \| good	4.922 \| good	21.21 \| good	22.844 \| good	0.549 \| good	4.171 \| good	0.202 \| good
2026-09-30T14:00:00.000Z	26 \| good	4.243 \| good	18.478 \| good	28.249 \| good	0.608 \| good	2.808 \| good	0.186 \| good
2026-09-30T15:00:00.000Z	29 \| good	3.703 \| good	16.143 \| good	30.823 \| good	0.575 \| good	1.891 \| good	0.172 \| good
2026-09-30T16:00:00.000Z	30 \| good	3.406 \| good	15.076 \| good	32.113 \| good	0.491 \| good	1.441 \| good	0.16 \| good
2026-09-30T17:00:00.000Z	31 \| good	3.312 \| good	14.7 \| good	34.118 \| good	0.441 \| good	1.461 \| good	0.157 \| good
2026-09-30T18:00:00.000Z	32 \| good	3.42 \| good	15.282 \| good	34.813 \| good	0.405 \| good	1.595 \| good	0.155 \| good
2026-09-30T19:00:00.000Z	33 \| good	3.328 \| good	14.546 \| good	36.423 \| good	0.386 \| good	1.921 \| good	0.155 \| good
2026-09-30T20:00:00.000Z	34 \| good	2.547 \| good	10.176 \| good	36.879 \| good	0.373 \| good	2.416 \| good	0.157 \| good
2026-09-30T21:00:00.000Z	32 \| good	3.666 \| good	16.273 \| good	34.528 \| good	0.373 \| good	3.495 \| good	0.166 \| good
2026-09-30T22:00:00.000Z	31 \| good	5.248 \| good	22.609 \| good	33.049 \| good	0.408 \| good	7.816 \| good	0.211 \| good

Live air quality index in Derby, Connecticut today

Major air pollutants in Derby, Connecticut

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Derby, Connecticut air quality forecast and history

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

Air quality in nearby cities

Shelton, Connecticut

Ansonia, Connecticut

Orange, Connecticut

Seymour, Connecticut

Monroe, Connecticut

Milford, Connecticut

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Air quality levels in US

Frequently asked questions

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

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

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

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

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

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

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

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

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

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