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

The current PM10 concentration at Winchester, Connecticut is 35.175 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Winchester, Connecticut is 0.199 ppb.

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

The current ozone (O3) concentration at Winchester, Connecticut is 36.985 ppm.

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

The current nitrogen dioxide (NO2) concentration at Winchester, Connecticut is 4.468 ppb.

Winchester, Connecticut live air quality index now

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

The current PM2.5 concentration at Winchester, Connecticut is 12.7 μg/m3.

Stay updated with real-time air quality in Winchester, 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)

Moderate

Winchester, Connecticut

Last updated: ... (Local time)

Major air pollutants in Winchester, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

12.70 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

35.17 μg/m³

155

255

425

605+

Ozone (O₃)

36.98 ppb

201

201+

Sulfur Dioxide (SO₂)

0.20 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.47 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.14 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Winchester, Connecticut

Get Live Pollen Counts

Winchester, Connecticut

Scroll To Air Quality Map

Track live Winchester, Connecticut air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-06-27T22:00:00.000Z	40 \| good	5.007 \| good	13.349 \| good	42.919 \| good	0.432 \| good	10.825 \| good	0.164 \| good
2026-06-27T23:00:00.000Z	37 \| good	5.641 \| good	13.282 \| good	40.204 \| good	0.324 \| good	6.539 \| good	0.18 \| good
2026-06-28T00:00:00.000Z	32 \| good	4.984 \| good	19.352 \| good	34.957 \| good	0.242 \| good	4.266 \| good	0.202 \| good
2026-06-28T01:00:00.000Z	30 \| good	5.324 \| good	19.228 \| good	32.27 \| good	0.182 \| good	2.002 \| good	0.194 \| good
2026-06-28T02:00:00.000Z	33 \| good	6.024 \| good	25.223 \| good	33.077 \| good	0.18 \| good	3.019 \| good	0.223 \| good
2026-06-28T03:00:00.000Z	38 \| good	6.868 \| good	30.418 \| good	39.895 \| good	0.184 \| good	5.513 \| good	0.21 \| good
2026-06-28T04:00:00.000Z	44 \| good	7.704 \| good	29.929 \| good	33.764 \| good	0.189 \| good	7.822 \| good	0.231 \| good
2026-06-28T05:00:00.000Z	33 \| good	6.192 \| good	24.241 \| good	35.234 \| good	0.164 \| good	9.976 \| good	0.239 \| good
2026-06-28T06:00:00.000Z	34 \| good	5.626 \| good	22.373 \| good	37 \| good	0.143 \| good	10.457 \| good	0.253 \| good
2026-06-28T07:00:00.000Z	33 \| good	6.354 \| good	23.169 \| good	31.608 \| good	0.352 \| good	4.054 \| good	0.246 \| good
2026-06-28T08:00:00.000Z	49 \| good	8.843 \| good	37.467 \| good	29.3 \| good	0.265 \| good	7.209 \| good	0.225 \| good
2026-06-28T09:00:00.000Z	38 \| good	6.922 \| good	25.008 \| good	16.521 \| good	0.485 \| good	8.375 \| good	0.21 \| good
2026-06-28T10:00:00.000Z	33 \| good	5.737 \| good	24.162 \| good	14.005 \| good	0.388 \| good	6.346 \| good	0.194 \| good
2026-06-28T11:00:00.000Z	38 \| good	6.902 \| good	24.473 \| good	12.871 \| good	0.396 \| good	4.551 \| good	0.202 \| good
2026-06-28T12:00:00.000Z	33 \| good	6.292 \| good	24.48 \| good	12.588 \| good	0.48 \| good	2.105 \| good	0.174 \| good
2026-06-28T13:00:00.000Z	38 \| good	6.866 \| good	28.098 \| good	14.179 \| good	0.317 \| good	2.291 \| good	0.176 \| good
2026-06-28T14:00:00.000Z	38 \| good	6.634 \| good	22.032 \| good	18.229 \| good	0.268 \| good	2.777 \| good	0.171 \| good
2026-06-28T15:00:00.000Z	38 \| good	6.634 \| good	21.908 \| good	23.139 \| good	0.182 \| good	2.29 \| good	0.149 \| good
2026-06-28T16:00:00.000Z	38 \| good	6.597 \| good	22.389 \| good	27.573 \| good	0.229 \| good	2.222 \| good	0.165 \| good
2026-06-28T17:00:00.000Z	38 \| good	6.823 \| good	19.57 \| good	31.405 \| good	0.184 \| good	3.72 \| good	0.149 \| good
2026-06-28T18:00:00.000Z	38 \| good	7.248 \| good	13.32 \| good	31.915 \| good	0.184 \| good	3.638 \| good	0.171 \| good
2026-06-28T19:00:00.000Z	33 \| good	6.478 \| good	17.866 \| good	34.585 \| good	0.33 \| good	3.118 \| good	0.186 \| good
2026-06-28T20:00:00.000Z	44 \| good	7.906 \| good	17.625 \| good	38.128 \| good	0.199 \| good	3.316 \| good	0.171 \| good
2026-06-28T21:00:00.000Z	44 \| good	7.542 \| good	14.599 \| good	40.906 \| good	0.452 \| good	3.575 \| good	0.171 \| good
2026-06-28T22:00:00.000Z	44 \| good	7.723 \| good	16.433 \| good	43.14 \| good	0.407 \| good	2.895 \| good	0.185 \| good
2026-06-28T23:00:00.000Z	38 \| good	7.355 \| good	31.422 \| good	36.547 \| good	0.403 \| good	3.058 \| good	0.164 \| good
2026-06-29T00:00:00.000Z	35 \| good	6.451 \| good	17.239 \| good	38.284 \| good	0.405 \| good	1.961 \| good	0.185 \| good
2026-06-29T01:00:00.000Z	38 \| good	7.016 \| good	17.975 \| good	39.879 \| good	0.381 \| good	3.434 \| good	0.164 \| good
2026-06-29T02:00:00.000Z	39 \| good	7.394 \| good	13.586 \| good	42.189 \| good	0.407 \| good	3.597 \| good	0.164 \| good
2026-06-29T03:00:00.000Z	56 \| moderate	11.735 \| good	52.332 \| good	48.932 \| good	0.189 \| good	5.979 \| good	0.22 \| good
2026-06-29T04:00:00.000Z	41 \| good	7.358 \| good	13.586 \| good	44.175 \| good	0.545 \| good	4.735 \| good	0.185 \| good
2026-06-29T05:00:00.000Z	40 \| good	6.815 \| good	21.622 \| good	43.146 \| good	0.519 \| good	5.355 \| good	0.205 \| good
2026-06-29T06:00:00.000Z	36 \| good	6.093 \| good	31.268 \| good	39.274 \| good	0.338 \| good	4.675 \| good	0.192 \| good
2026-06-29T07:00:00.000Z	33 \| good	5.688 \| good	35.176 \| good	27.565 \| good	0.474 \| good	3.933 \| good	0.184 \| good
2026-06-29T08:00:00.000Z	38 \| good	7.477 \| good	35.787 \| good	35.011 \| good	0.336 \| good	6.02 \| good	0.192 \| good
2026-06-29T09:00:00.000Z	38 \| good	6.628 \| good	24.228 \| good	28.716 \| good	0.341 \| good	3.032 \| good	0.185 \| good
2026-06-29T10:00:00.000Z	38 \| good	6.853 \| good	21.103 \| good	23.421 \| good	0.24 \| good	6.328 \| good	0.165 \| good
2026-06-29T11:00:00.000Z	38 \| good	7.256 \| good	29.143 \| good	23.873 \| good	0.154 \| good	4.525 \| good	0.19 \| good
2026-06-29T12:00:00.000Z	38 \| good	7.336 \| good	30.905 \| good	21.018 \| good	0.147 \| good	5.204 \| good	0.213 \| good
2026-06-29T13:00:00.000Z	38 \| good	6.644 \| good	25.676 \| good	14.911 \| good	0.158 \| good	5.014 \| good	0.207 \| good
2026-06-29T14:00:00.000Z	38 \| good	6.873 \| good	29.432 \| good	25.921 \| good	0.22 \| good	3.076 \| good	0.157 \| good
2026-06-29T15:00:00.000Z	44 \| good	8.328 \| good	25.224 \| good	26.334 \| good	0.26 \| good	4.321 \| good	0.15 \| good
2026-06-29T16:00:00.000Z	52 \| moderate	9.898 \| good	29.633 \| good	24.917 \| good	0.239 \| good	5.066 \| good	0.164 \| good
2026-06-29T17:00:00.000Z	52 \| moderate	9.794 \| good	41.404 \| good	28.66 \| good	0.27 \| good	3.575 \| good	0.158 \| good
2026-06-29T18:00:00.000Z	54 \| moderate	11.277 \| good	42.735 \| good	30.659 \| good	0.266 \| good	4.232 \| good	0.158 \| good
2026-06-29T19:00:00.000Z	56 \| moderate	12.062 \| good	27.631 \| good	32.74 \| good	0.224 \| good	4.209 \| good	0.123 \| good
2026-06-29T20:00:00.000Z	58 \| moderate	12.7 \| fine	35.175 \| good	36.985 \| good	0.199 \| good	4.468 \| good	0.145 \| good
2026-06-29T21:00:00.000Z	60 \| moderate	13.579 \| fine	30.015 \| good	39.985 \| good	0.219 \| good	3.598 \| good	0.13 \| good
2026-06-29T21:00:00.000Z	58 \| moderate	12.7 \| fine	35.175 \| good	36.985 \| good	0.199 \| good	4.468 \| good	0.145 \| good
2026-06-29T22:00:00.000Z	30 \| good	2.722 \| good	11.293 \| good	32.295 \| good	0.154 \| good	0.957 \| good	0.144 \| good
2026-06-29T23:00:00.000Z	26 \| good	2.281 \| good	9.278 \| good	27.735 \| good	0.144 \| good	1.666 \| good	0.161 \| good
2026-06-30T00:00:00.000Z	30 \| good	3.645 \| good	15.954 \| good	31.982 \| good	0.158 \| good	2.471 \| good	0.175 \| good
2026-06-30T01:00:00.000Z	32 \| good	4.51 \| good	19.631 \| good	34.575 \| good	0.188 \| good	3.648 \| good	0.188 \| good
2026-06-30T02:00:00.000Z	38 \| good	7.12 \| good	31.593 \| good	37.452 \| good	0.229 \| good	3.754 \| good	0.188 \| good
2026-06-30T03:00:00.000Z	54 \| moderate	11.021 \| good	49.053 \| good	38.169 \| good	0.307 \| good	3.96 \| good	0.185 \| good
2026-06-30T04:00:00.000Z	58 \| moderate	12.686 \| fine	56.89 \| fine	40.883 \| good	0.426 \| good	4.657 \| good	0.183 \| good
2026-06-30T05:00:00.000Z	58 \| moderate	13.445 \| fine	60.142 \| fine	42.347 \| good	0.546 \| good	5.311 \| good	0.18 \| good
2026-06-30T06:00:00.000Z	58 \| moderate	13.386 \| fine	60.124 \| fine	44.033 \| good	0.642 \| good	5.862 \| good	0.176 \| good
2026-06-30T07:00:00.000Z	60 \| moderate	13.846 \| fine	61.852 \| fine	43.794 \| good	0.706 \| good	6.299 \| good	0.175 \| good
2026-06-30T08:00:00.000Z	60 \| moderate	13.727 \| fine	61.864 \| fine	42.199 \| good	0.732 \| good	6.646 \| good	0.177 \| good
2026-06-30T09:00:00.000Z	60 \| moderate	13.882 \| fine	62.373 \| fine	38.679 \| good	0.726 \| good	6.9 \| good	0.181 \| good
2026-06-30T10:00:00.000Z	58 \| moderate	12.982 \| fine	58.316 \| fine	35.717 \| good	0.698 \| good	6.928 \| good	0.187 \| good
2026-06-30T11:00:00.000Z	58 \| moderate	12.82 \| fine	57.765 \| fine	36.367 \| good	0.59 \| good	5.224 \| good	0.194 \| good
2026-06-30T12:00:00.000Z	60 \| moderate	13.513 \| fine	61.089 \| fine	40.18 \| good	0.524 \| good	3.252 \| good	0.2 \| good
2026-06-30T13:00:00.000Z	60 \| moderate	13.599 \| fine	61.188 \| fine	45.95 \| good	0.525 \| good	1.847 \| good	0.197 \| good
2026-06-30T14:00:00.000Z	58 \| moderate	12.545 \| fine	56.839 \| fine	48.524 \| good	0.514 \| good	1.075 \| good	0.188 \| good
2026-06-30T15:00:00.000Z	54 \| moderate	11.341 \| good	49.966 \| good	48.57 \| good	0.465 \| good	0.697 \| good	0.176 \| good
2026-06-30T16:00:00.000Z	52 \| moderate	10.172 \| good	44.917 \| good	47.382 \| good	0.405 \| good	0.536 \| good	0.168 \| good
2026-06-30T17:00:00.000Z	49 \| good	9.175 \| good	41.08 \| good	46.965 \| good	0.371 \| good	0.486 \| good	0.165 \| good
2026-06-30T18:00:00.000Z	44 \| good	8.353 \| good	36.695 \| good	45.563 \| good	0.361 \| good	0.493 \| good	0.164 \| good
2026-06-30T19:00:00.000Z	44 \| good	8.496 \| good	37.346 \| good	46.273 \| good	0.369 \| good	0.524 \| good	0.164 \| good
2026-06-30T20:00:00.000Z	49 \| good	9.318 \| good	41.544 \| good	47.993 \| good	0.388 \| good	0.595 \| good	0.164 \| good
2026-06-30T21:00:00.000Z	52 \| moderate	9.601 \| good	42.741 \| good	49.373 \| good	0.409 \| good	0.741 \| good	0.165 \| good
2026-06-30T22:00:00.000Z	49 \| good	8.696 \| good	38.104 \| good	52.724 \| good	0.406 \| good	1.05 \| good	0.167 \| good
2026-06-30T23:00:00.000Z	49 \| good	8.676 \| good	38.244 \| good	52.754 \| good	0.385 \| good	1.625 \| good	0.174 \| good
2026-07-01T00:00:00.000Z	51 \| moderate	7.425 \| good	32.612 \| good	54.561 \| good	0.366 \| good	2.243 \| good	0.18 \| good
2026-07-01T01:00:00.000Z	45 \| good	7.267 \| good	31.982 \| good	49.151 \| good	0.378 \| good	2.996 \| good	0.183 \| good
2026-07-01T02:00:00.000Z	45 \| good	7.982 \| good	35.121 \| good	48.972 \| good	0.395 \| good	3.352 \| good	0.18 \| good
2026-07-01T03:00:00.000Z	52 \| moderate	9.696 \| good	43.394 \| good	47.002 \| good	0.444 \| good	4.18 \| good	0.176 \| good
2026-07-01T04:00:00.000Z	52 \| moderate	10.294 \| good	45.587 \| good	46.493 \| good	0.482 \| good	5.128 \| good	0.176 \| good
2026-07-01T05:00:00.000Z	54 \| moderate	10.625 \| good	47.25 \| good	47.665 \| good	0.499 \| good	5.554 \| good	0.177 \| good
2026-07-01T06:00:00.000Z	52 \| moderate	10.286 \| good	45.474 \| good	46.063 \| good	0.514 \| good	5.314 \| good	0.172 \| good
2026-07-01T07:00:00.000Z	52 \| moderate	10 \| good	44.522 \| good	41.305 \| good	0.521 \| good	4.514 \| good	0.163 \| good
2026-07-01T08:00:00.000Z	49 \| good	9.231 \| good	40.932 \| good	36.999 \| good	0.509 \| good	3.936 \| good	0.156 \| good
2026-07-01T09:00:00.000Z	44 \| good	8.293 \| good	36.313 \| good	36.766 \| good	0.498 \| good	3.726 \| good	0.153 \| good
2026-07-01T10:00:00.000Z	38 \| good	7.46 \| good	32.896 \| good	36.251 \| good	0.48 \| good	3.586 \| good	0.153 \| good
2026-07-01T11:00:00.000Z	44 \| good	8.393 \| good	36.845 \| good	35.364 \| good	0.452 \| good	2.961 \| good	0.155 \| good
2026-07-01T12:00:00.000Z	54 \| moderate	11.072 \| good	48.928 \| good	37.726 \| good	0.444 \| good	2.27 \| good	0.162 \| good
2026-07-01T13:00:00.000Z	60 \| moderate	13.806 \| fine	61.975 \| fine	42.978 \| good	0.478 \| good	1.59 \| good	0.171 \| good
2026-07-01T14:00:00.000Z	66 \| moderate	16.907 \| fine	75.208 \| fine	44.241 \| good	0.526 \| good	1.095 \| good	0.18 \| good
2026-07-01T15:00:00.000Z	69 \| moderate	19.029 \| fine	84.029 \| fine	46.618 \| good	0.581 \| good	0.855 \| good	0.187 \| good
2026-07-01T16:00:00.000Z	73 \| moderate	21.123 \| fine	92.81 \| fine	48.02 \| good	0.629 \| good	0.716 \| good	0.188 \| good
2026-07-01T17:00:00.000Z	75 \| moderate	22.243 \| fine	97.161 \| fine	47.2 \| good	0.611 \| good	0.59 \| good	0.183 \| good
2026-07-01T18:00:00.000Z	77 \| moderate	22.718 \| fine	99.349 \| fine	46.397 \| good	0.562 \| good	0.522 \| good	0.18 \| good
2026-07-01T19:00:00.000Z	75 \| moderate	21.574 \| fine	94.967 \| fine	46.98 \| good	0.514 \| good	0.503 \| good	0.178 \| good
2026-07-01T20:00:00.000Z	71 \| moderate	19.817 \| fine	87 \| fine	44.739 \| good	0.471 \| good	0.508 \| good	0.178 \| good
2026-07-01T21:00:00.000Z	71 \| moderate	19.637 \| fine	86.678 \| fine	42.286 \| good	0.436 \| good	0.582 \| good	0.177 \| good

Winchester

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Winchester, Connecticut air quality map: Track AQI near you

0.14ppm

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 Winchester, Connecticut updated?

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

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

The worst air quality in Winchester, Connecticut in the last 24 hours was observed at 08:00:00 on 2026-06-29.

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

In the last 24 hrs, the best air quality in Winchester, Connecticut was observed at 07:00:00 on 2026-06-29.

What is the current air quality in Winchester, Connecticut?

The current air quality in Winchester, Connecticut is 58, categorized as Moderate based on real-time data.

What pollutant is the most common in Winchester, Connecticut?

The most common pollutant in Winchester, Connecticut is PM2.5.

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

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

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

The current PM_2.5 concentration at Winchester, Connecticut is 12.7 μg/m³.

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

The current PM₁₀ concentration at Winchester, Connecticut is 35.175 μg/m³.

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

The current carbon monoxide (CO) concentration at Winchester, Connecticut is 0.145 ppm.

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

The current sulfur dioxide (SO₂) concentration at Winchester, Connecticut is 0.199 ppb.

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

The current ozone (O₃) concentration at Winchester, Connecticut is 36.985 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Winchester, Connecticut is 4.468 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-06-27T22:00:00.000Z	40 \| good	5.007 \| good	13.349 \| good	42.919 \| good	0.432 \| good	10.825 \| good	0.164 \| good
2026-06-27T23:00:00.000Z	37 \| good	5.641 \| good	13.282 \| good	40.204 \| good	0.324 \| good	6.539 \| good	0.18 \| good
2026-06-28T00:00:00.000Z	32 \| good	4.984 \| good	19.352 \| good	34.957 \| good	0.242 \| good	4.266 \| good	0.202 \| good
2026-06-28T01:00:00.000Z	30 \| good	5.324 \| good	19.228 \| good	32.27 \| good	0.182 \| good	2.002 \| good	0.194 \| good
2026-06-28T02:00:00.000Z	33 \| good	6.024 \| good	25.223 \| good	33.077 \| good	0.18 \| good	3.019 \| good	0.223 \| good
2026-06-28T03:00:00.000Z	38 \| good	6.868 \| good	30.418 \| good	39.895 \| good	0.184 \| good	5.513 \| good	0.21 \| good
2026-06-28T04:00:00.000Z	44 \| good	7.704 \| good	29.929 \| good	33.764 \| good	0.189 \| good	7.822 \| good	0.231 \| good
2026-06-28T05:00:00.000Z	33 \| good	6.192 \| good	24.241 \| good	35.234 \| good	0.164 \| good	9.976 \| good	0.239 \| good
2026-06-28T06:00:00.000Z	34 \| good	5.626 \| good	22.373 \| good	37 \| good	0.143 \| good	10.457 \| good	0.253 \| good
2026-06-28T07:00:00.000Z	33 \| good	6.354 \| good	23.169 \| good	31.608 \| good	0.352 \| good	4.054 \| good	0.246 \| good
2026-06-28T08:00:00.000Z	49 \| good	8.843 \| good	37.467 \| good	29.3 \| good	0.265 \| good	7.209 \| good	0.225 \| good
2026-06-28T09:00:00.000Z	38 \| good	6.922 \| good	25.008 \| good	16.521 \| good	0.485 \| good	8.375 \| good	0.21 \| good
2026-06-28T10:00:00.000Z	33 \| good	5.737 \| good	24.162 \| good	14.005 \| good	0.388 \| good	6.346 \| good	0.194 \| good
2026-06-28T11:00:00.000Z	38 \| good	6.902 \| good	24.473 \| good	12.871 \| good	0.396 \| good	4.551 \| good	0.202 \| good
2026-06-28T12:00:00.000Z	33 \| good	6.292 \| good	24.48 \| good	12.588 \| good	0.48 \| good	2.105 \| good	0.174 \| good
2026-06-28T13:00:00.000Z	38 \| good	6.866 \| good	28.098 \| good	14.179 \| good	0.317 \| good	2.291 \| good	0.176 \| good
2026-06-28T14:00:00.000Z	38 \| good	6.634 \| good	22.032 \| good	18.229 \| good	0.268 \| good	2.777 \| good	0.171 \| good
2026-06-28T15:00:00.000Z	38 \| good	6.634 \| good	21.908 \| good	23.139 \| good	0.182 \| good	2.29 \| good	0.149 \| good
2026-06-28T16:00:00.000Z	38 \| good	6.597 \| good	22.389 \| good	27.573 \| good	0.229 \| good	2.222 \| good	0.165 \| good
2026-06-28T17:00:00.000Z	38 \| good	6.823 \| good	19.57 \| good	31.405 \| good	0.184 \| good	3.72 \| good	0.149 \| good
2026-06-28T18:00:00.000Z	38 \| good	7.248 \| good	13.32 \| good	31.915 \| good	0.184 \| good	3.638 \| good	0.171 \| good
2026-06-28T19:00:00.000Z	33 \| good	6.478 \| good	17.866 \| good	34.585 \| good	0.33 \| good	3.118 \| good	0.186 \| good
2026-06-28T20:00:00.000Z	44 \| good	7.906 \| good	17.625 \| good	38.128 \| good	0.199 \| good	3.316 \| good	0.171 \| good
2026-06-28T21:00:00.000Z	44 \| good	7.542 \| good	14.599 \| good	40.906 \| good	0.452 \| good	3.575 \| good	0.171 \| good
2026-06-28T22:00:00.000Z	44 \| good	7.723 \| good	16.433 \| good	43.14 \| good	0.407 \| good	2.895 \| good	0.185 \| good
2026-06-28T23:00:00.000Z	38 \| good	7.355 \| good	31.422 \| good	36.547 \| good	0.403 \| good	3.058 \| good	0.164 \| good
2026-06-29T00:00:00.000Z	35 \| good	6.451 \| good	17.239 \| good	38.284 \| good	0.405 \| good	1.961 \| good	0.185 \| good
2026-06-29T01:00:00.000Z	38 \| good	7.016 \| good	17.975 \| good	39.879 \| good	0.381 \| good	3.434 \| good	0.164 \| good
2026-06-29T02:00:00.000Z	39 \| good	7.394 \| good	13.586 \| good	42.189 \| good	0.407 \| good	3.597 \| good	0.164 \| good
2026-06-29T03:00:00.000Z	56 \| moderate	11.735 \| good	52.332 \| good	48.932 \| good	0.189 \| good	5.979 \| good	0.22 \| good
2026-06-29T04:00:00.000Z	41 \| good	7.358 \| good	13.586 \| good	44.175 \| good	0.545 \| good	4.735 \| good	0.185 \| good
2026-06-29T05:00:00.000Z	40 \| good	6.815 \| good	21.622 \| good	43.146 \| good	0.519 \| good	5.355 \| good	0.205 \| good
2026-06-29T06:00:00.000Z	36 \| good	6.093 \| good	31.268 \| good	39.274 \| good	0.338 \| good	4.675 \| good	0.192 \| good
2026-06-29T07:00:00.000Z	33 \| good	5.688 \| good	35.176 \| good	27.565 \| good	0.474 \| good	3.933 \| good	0.184 \| good
2026-06-29T08:00:00.000Z	38 \| good	7.477 \| good	35.787 \| good	35.011 \| good	0.336 \| good	6.02 \| good	0.192 \| good
2026-06-29T09:00:00.000Z	38 \| good	6.628 \| good	24.228 \| good	28.716 \| good	0.341 \| good	3.032 \| good	0.185 \| good
2026-06-29T10:00:00.000Z	38 \| good	6.853 \| good	21.103 \| good	23.421 \| good	0.24 \| good	6.328 \| good	0.165 \| good
2026-06-29T11:00:00.000Z	38 \| good	7.256 \| good	29.143 \| good	23.873 \| good	0.154 \| good	4.525 \| good	0.19 \| good
2026-06-29T12:00:00.000Z	38 \| good	7.336 \| good	30.905 \| good	21.018 \| good	0.147 \| good	5.204 \| good	0.213 \| good
2026-06-29T13:00:00.000Z	38 \| good	6.644 \| good	25.676 \| good	14.911 \| good	0.158 \| good	5.014 \| good	0.207 \| good
2026-06-29T14:00:00.000Z	38 \| good	6.873 \| good	29.432 \| good	25.921 \| good	0.22 \| good	3.076 \| good	0.157 \| good
2026-06-29T15:00:00.000Z	44 \| good	8.328 \| good	25.224 \| good	26.334 \| good	0.26 \| good	4.321 \| good	0.15 \| good
2026-06-29T16:00:00.000Z	52 \| moderate	9.898 \| good	29.633 \| good	24.917 \| good	0.239 \| good	5.066 \| good	0.164 \| good
2026-06-29T17:00:00.000Z	52 \| moderate	9.794 \| good	41.404 \| good	28.66 \| good	0.27 \| good	3.575 \| good	0.158 \| good
2026-06-29T18:00:00.000Z	54 \| moderate	11.277 \| good	42.735 \| good	30.659 \| good	0.266 \| good	4.232 \| good	0.158 \| good
2026-06-29T19:00:00.000Z	56 \| moderate	12.062 \| good	27.631 \| good	32.74 \| good	0.224 \| good	4.209 \| good	0.123 \| good
2026-06-29T20:00:00.000Z	58 \| moderate	12.7 \| fine	35.175 \| good	36.985 \| good	0.199 \| good	4.468 \| good	0.145 \| good
2026-06-29T21:00:00.000Z	60 \| moderate	13.579 \| fine	30.015 \| good	39.985 \| good	0.219 \| good	3.598 \| good	0.13 \| good
2026-06-29T21:00:00.000Z	58 \| moderate	12.7 \| fine	35.175 \| good	36.985 \| good	0.199 \| good	4.468 \| good	0.145 \| good
2026-06-29T22:00:00.000Z	30 \| good	2.722 \| good	11.293 \| good	32.295 \| good	0.154 \| good	0.957 \| good	0.144 \| good
2026-06-29T23:00:00.000Z	26 \| good	2.281 \| good	9.278 \| good	27.735 \| good	0.144 \| good	1.666 \| good	0.161 \| good
2026-06-30T00:00:00.000Z	30 \| good	3.645 \| good	15.954 \| good	31.982 \| good	0.158 \| good	2.471 \| good	0.175 \| good
2026-06-30T01:00:00.000Z	32 \| good	4.51 \| good	19.631 \| good	34.575 \| good	0.188 \| good	3.648 \| good	0.188 \| good
2026-06-30T02:00:00.000Z	38 \| good	7.12 \| good	31.593 \| good	37.452 \| good	0.229 \| good	3.754 \| good	0.188 \| good
2026-06-30T03:00:00.000Z	54 \| moderate	11.021 \| good	49.053 \| good	38.169 \| good	0.307 \| good	3.96 \| good	0.185 \| good
2026-06-30T04:00:00.000Z	58 \| moderate	12.686 \| fine	56.89 \| fine	40.883 \| good	0.426 \| good	4.657 \| good	0.183 \| good
2026-06-30T05:00:00.000Z	58 \| moderate	13.445 \| fine	60.142 \| fine	42.347 \| good	0.546 \| good	5.311 \| good	0.18 \| good
2026-06-30T06:00:00.000Z	58 \| moderate	13.386 \| fine	60.124 \| fine	44.033 \| good	0.642 \| good	5.862 \| good	0.176 \| good
2026-06-30T07:00:00.000Z	60 \| moderate	13.846 \| fine	61.852 \| fine	43.794 \| good	0.706 \| good	6.299 \| good	0.175 \| good
2026-06-30T08:00:00.000Z	60 \| moderate	13.727 \| fine	61.864 \| fine	42.199 \| good	0.732 \| good	6.646 \| good	0.177 \| good
2026-06-30T09:00:00.000Z	60 \| moderate	13.882 \| fine	62.373 \| fine	38.679 \| good	0.726 \| good	6.9 \| good	0.181 \| good
2026-06-30T10:00:00.000Z	58 \| moderate	12.982 \| fine	58.316 \| fine	35.717 \| good	0.698 \| good	6.928 \| good	0.187 \| good
2026-06-30T11:00:00.000Z	58 \| moderate	12.82 \| fine	57.765 \| fine	36.367 \| good	0.59 \| good	5.224 \| good	0.194 \| good
2026-06-30T12:00:00.000Z	60 \| moderate	13.513 \| fine	61.089 \| fine	40.18 \| good	0.524 \| good	3.252 \| good	0.2 \| good
2026-06-30T13:00:00.000Z	60 \| moderate	13.599 \| fine	61.188 \| fine	45.95 \| good	0.525 \| good	1.847 \| good	0.197 \| good
2026-06-30T14:00:00.000Z	58 \| moderate	12.545 \| fine	56.839 \| fine	48.524 \| good	0.514 \| good	1.075 \| good	0.188 \| good
2026-06-30T15:00:00.000Z	54 \| moderate	11.341 \| good	49.966 \| good	48.57 \| good	0.465 \| good	0.697 \| good	0.176 \| good
2026-06-30T16:00:00.000Z	52 \| moderate	10.172 \| good	44.917 \| good	47.382 \| good	0.405 \| good	0.536 \| good	0.168 \| good
2026-06-30T17:00:00.000Z	49 \| good	9.175 \| good	41.08 \| good	46.965 \| good	0.371 \| good	0.486 \| good	0.165 \| good
2026-06-30T18:00:00.000Z	44 \| good	8.353 \| good	36.695 \| good	45.563 \| good	0.361 \| good	0.493 \| good	0.164 \| good
2026-06-30T19:00:00.000Z	44 \| good	8.496 \| good	37.346 \| good	46.273 \| good	0.369 \| good	0.524 \| good	0.164 \| good
2026-06-30T20:00:00.000Z	49 \| good	9.318 \| good	41.544 \| good	47.993 \| good	0.388 \| good	0.595 \| good	0.164 \| good
2026-06-30T21:00:00.000Z	52 \| moderate	9.601 \| good	42.741 \| good	49.373 \| good	0.409 \| good	0.741 \| good	0.165 \| good
2026-06-30T22:00:00.000Z	49 \| good	8.696 \| good	38.104 \| good	52.724 \| good	0.406 \| good	1.05 \| good	0.167 \| good
2026-06-30T23:00:00.000Z	49 \| good	8.676 \| good	38.244 \| good	52.754 \| good	0.385 \| good	1.625 \| good	0.174 \| good
2026-07-01T00:00:00.000Z	51 \| moderate	7.425 \| good	32.612 \| good	54.561 \| good	0.366 \| good	2.243 \| good	0.18 \| good
2026-07-01T01:00:00.000Z	45 \| good	7.267 \| good	31.982 \| good	49.151 \| good	0.378 \| good	2.996 \| good	0.183 \| good
2026-07-01T02:00:00.000Z	45 \| good	7.982 \| good	35.121 \| good	48.972 \| good	0.395 \| good	3.352 \| good	0.18 \| good
2026-07-01T03:00:00.000Z	52 \| moderate	9.696 \| good	43.394 \| good	47.002 \| good	0.444 \| good	4.18 \| good	0.176 \| good
2026-07-01T04:00:00.000Z	52 \| moderate	10.294 \| good	45.587 \| good	46.493 \| good	0.482 \| good	5.128 \| good	0.176 \| good
2026-07-01T05:00:00.000Z	54 \| moderate	10.625 \| good	47.25 \| good	47.665 \| good	0.499 \| good	5.554 \| good	0.177 \| good
2026-07-01T06:00:00.000Z	52 \| moderate	10.286 \| good	45.474 \| good	46.063 \| good	0.514 \| good	5.314 \| good	0.172 \| good
2026-07-01T07:00:00.000Z	52 \| moderate	10 \| good	44.522 \| good	41.305 \| good	0.521 \| good	4.514 \| good	0.163 \| good
2026-07-01T08:00:00.000Z	49 \| good	9.231 \| good	40.932 \| good	36.999 \| good	0.509 \| good	3.936 \| good	0.156 \| good
2026-07-01T09:00:00.000Z	44 \| good	8.293 \| good	36.313 \| good	36.766 \| good	0.498 \| good	3.726 \| good	0.153 \| good
2026-07-01T10:00:00.000Z	38 \| good	7.46 \| good	32.896 \| good	36.251 \| good	0.48 \| good	3.586 \| good	0.153 \| good
2026-07-01T11:00:00.000Z	44 \| good	8.393 \| good	36.845 \| good	35.364 \| good	0.452 \| good	2.961 \| good	0.155 \| good
2026-07-01T12:00:00.000Z	54 \| moderate	11.072 \| good	48.928 \| good	37.726 \| good	0.444 \| good	2.27 \| good	0.162 \| good
2026-07-01T13:00:00.000Z	60 \| moderate	13.806 \| fine	61.975 \| fine	42.978 \| good	0.478 \| good	1.59 \| good	0.171 \| good
2026-07-01T14:00:00.000Z	66 \| moderate	16.907 \| fine	75.208 \| fine	44.241 \| good	0.526 \| good	1.095 \| good	0.18 \| good
2026-07-01T15:00:00.000Z	69 \| moderate	19.029 \| fine	84.029 \| fine	46.618 \| good	0.581 \| good	0.855 \| good	0.187 \| good
2026-07-01T16:00:00.000Z	73 \| moderate	21.123 \| fine	92.81 \| fine	48.02 \| good	0.629 \| good	0.716 \| good	0.188 \| good
2026-07-01T17:00:00.000Z	75 \| moderate	22.243 \| fine	97.161 \| fine	47.2 \| good	0.611 \| good	0.59 \| good	0.183 \| good
2026-07-01T18:00:00.000Z	77 \| moderate	22.718 \| fine	99.349 \| fine	46.397 \| good	0.562 \| good	0.522 \| good	0.18 \| good
2026-07-01T19:00:00.000Z	75 \| moderate	21.574 \| fine	94.967 \| fine	46.98 \| good	0.514 \| good	0.503 \| good	0.178 \| good
2026-07-01T20:00:00.000Z	71 \| moderate	19.817 \| fine	87 \| fine	44.739 \| good	0.471 \| good	0.508 \| good	0.178 \| good
2026-07-01T21:00:00.000Z	71 \| moderate	19.637 \| fine	86.678 \| fine	42.286 \| good	0.436 \| good	0.582 \| good	0.177 \| good

Winchester, Connecticut live air quality index now

Major air pollutants in Winchester, Connecticut

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

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Winchester, Connecticut air quality map: Track AQI near you

Air quality in nearby cities

Torrington, Connecticut

Canton, Connecticut

Plymouth, Connecticut

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Simsbury, Connecticut

Granby, Connecticut

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Frequently asked questions

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What is the current concentration of PM2.5 in Winchester, Connecticut?

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

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

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

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

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

Particulate Matter_2.5 (PM_2.5)

Particulate Matter₁₀ (PM₁₀)

Ozone (O₃)

Sulfur Dioxide (SO₂)

Nitrogen Dioxide (NO₂)

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

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

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

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

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