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

The current PM10 concentration at Winchester, Connecticut is 49.605 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Winchester, Connecticut is 0.471 ppb.

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

The current ozone (O3) concentration at Winchester, Connecticut is 50.994 ppm.

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

The current nitrogen dioxide (NO2) concentration at Winchester, Connecticut is 5.618 ppb.

Live air quality index in Winchester, Connecticut today

Name: Live air pollution levels in Winchester, Connecticut today
Creator: Ambee

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)

16.24 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

49.60 μg/m³

155

255

425

605+

Ozone (O₃)

50.99 ppb

201

201+

Sulfur Dioxide (SO₂)

0.47 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.62 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.26 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Moderate

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
2025-06-04T22:00:00.000Z	122 \| sensitive	11.298 \| good	36.49 \| good	77.072 \| moderate	0.435 \| good	7.778 \| good	0.228 \| good
2025-06-04T23:00:00.000Z	133 \| sensitive	14.117 \| fine	51.363 \| good	80.04 \| moderate	0.438 \| good	6.865 \| good	0.25 \| good
2025-06-05T00:00:00.000Z	115 \| sensitive	13.55 \| fine	47.988 \| good	74.657 \| moderate	0.541 \| good	5.918 \| good	0.236 \| good
2025-06-05T01:00:00.000Z	108 \| sensitive	12.042 \| good	36.23 \| good	73.455 \| moderate	0.382 \| good	9.153 \| good	0.264 \| good
2025-06-05T02:00:00.000Z	97 \| moderate	11.685 \| good	27.302 \| good	69.195 \| fine	0.344 \| good	9.594 \| good	0.243 \| good
2025-06-05T03:00:00.000Z	87 \| moderate	11.975 \| good	31.444 \| good	65.734 \| fine	0.28 \| good	9.193 \| good	0.242 \| good
2025-06-05T04:00:00.000Z	93 \| moderate	11.713 \| good	53.729 \| good	67.92 \| fine	0.311 \| good	7.319 \| good	0.226 \| good
2025-06-05T05:00:00.000Z	97 \| moderate	13.597 \| fine	37.949 \| good	69.402 \| fine	0.57 \| good	8.083 \| good	0.204 \| good
2025-06-05T06:00:00.000Z	87 \| moderate	14.451 \| fine	30.535 \| good	65.548 \| fine	0.573 \| good	8.908 \| good	0.213 \| good
2025-06-05T07:00:00.000Z	84 \| moderate	13.271 \| fine	33.568 \| good	65.056 \| fine	0.361 \| good	6.094 \| good	0.213 \| good
2025-06-05T08:00:00.000Z	71 \| moderate	11.743 \| good	48.343 \| good	60.784 \| fine	0.306 \| good	6.189 \| good	0.213 \| good
2025-06-05T09:00:00.000Z	71 \| moderate	15.056 \| fine	31.427 \| good	60.868 \| fine	0.382 \| good	6.574 \| good	0.2 \| good
2025-06-05T10:00:00.000Z	64 \| moderate	15.504 \| fine	60.553 \| fine	53.989 \| good	0.384 \| good	6.882 \| good	0.229 \| good
2025-06-05T11:00:00.000Z	64 \| moderate	14.574 \| fine	48.524 \| good	58.71 \| fine	0.206 \| good	7.293 \| good	0.292 \| good
2025-06-05T12:00:00.000Z	67 \| moderate	18.079 \| fine	56.593 \| fine	57.633 \| fine	0.332 \| good	8.631 \| good	0.322 \| good
2025-06-05T13:00:00.000Z	64 \| moderate	15.746 \| fine	49.091 \| good	43.91 \| good	0.333 \| good	10.948 \| good	0.345 \| good
2025-06-05T14:00:00.000Z	64 \| moderate	16.198 \| fine	41.892 \| good	30.315 \| good	0.361 \| good	11.007 \| good	0.294 \| good
2025-06-05T15:00:00.000Z	66 \| moderate	16.924 \| fine	42.081 \| good	38.036 \| good	0.9 \| good	8.236 \| good	0.316 \| good
2025-06-05T16:00:00.000Z	73 \| moderate	21.02 \| fine	61.68 \| fine	36.441 \| good	0.886 \| good	12.457 \| good	0.316 \| good
2025-06-05T17:00:00.000Z	71 \| moderate	19.99 \| fine	56.258 \| fine	59.231 \| fine	0.474 \| good	8.364 \| good	0.301 \| good
2025-06-05T18:00:00.000Z	69 \| moderate	19.316 \| fine	50.531 \| good	60.134 \| fine	0.808 \| good	7.06 \| good	0.294 \| good
2025-06-05T19:00:00.000Z	87 \| moderate	19.292 \| fine	54.216 \| good	65.584 \| fine	0.871 \| good	5.417 \| good	0.294 \| good
2025-06-05T20:00:00.000Z	77 \| moderate	23.045 \| fine	79.939 \| fine	62.464 \| fine	0.715 \| good	5.254 \| good	0.309 \| good
2025-06-05T21:00:00.000Z	75 \| moderate	21.604 \| fine	91.329 \| fine	58.401 \| fine	0.743 \| good	4.916 \| good	0.288 \| good
2025-06-05T22:00:00.000Z	75 \| moderate	21.662 \| fine	77.476 \| fine	60.36 \| fine	0.673 \| good	2.786 \| good	0.302 \| good
2025-06-05T23:00:00.000Z	79 \| moderate	23.931 \| fine	70.004 \| fine	59.606 \| fine	0.702 \| good	2.539 \| good	0.335 \| good
2025-06-06T00:00:00.000Z	100 \| moderate	21.201 \| fine	86.191 \| fine	70.449 \| fine	0.389 \| good	3.368 \| good	0.343 \| good
2025-06-06T01:00:00.000Z	100 \| moderate	23.092 \| fine	43.336 \| good	70.203 \| fine	0.71 \| good	7.982 \| good	0.327 \| good
2025-06-06T02:00:00.000Z	73 \| moderate	21.047 \| fine	76.892 \| fine	50.972 \| good	0.57 \| good	7.474 \| good	0.306 \| good
2025-06-06T03:00:00.000Z	77 \| moderate	22.589 \| fine	75.542 \| fine	51.227 \| good	0.487 \| good	15.255 \| good	0.313 \| good
2025-06-06T04:00:00.000Z	97 \| moderate	21.594 \| fine	49.897 \| good	69.066 \| fine	0.446 \| good	5.436 \| good	0.31 \| good
2025-06-06T05:00:00.000Z	75 \| moderate	22.232 \| fine	47.828 \| good	54.483 \| good	0.227 \| good	15.182 \| good	0.289 \| good
2025-06-06T06:00:00.000Z	73 \| moderate	20.9 \| fine	35.503 \| good	60.054 \| fine	0.375 \| good	16.845 \| good	0.218 \| good
2025-06-06T07:00:00.000Z	71 \| moderate	19.85 \| fine	35.477 \| good	56.068 \| fine	0.602 \| good	8.863 \| good	0.211 \| good
2025-06-06T08:00:00.000Z	66 \| moderate	17.179 \| fine	66.789 \| fine	58.453 \| fine	0.585 \| good	6.986 \| good	0.211 \| good
2025-06-06T09:00:00.000Z	64 \| moderate	16.149 \| fine	68.696 \| fine	54.792 \| good	0.622 \| good	8.938 \| good	0.192 \| good
2025-06-06T10:00:00.000Z	60 \| moderate	14.232 \| fine	31.076 \| good	45.172 \| good	0.574 \| good	3.264 \| good	0.192 \| good
2025-06-06T11:00:00.000Z	58 \| moderate	13.329 \| fine	27.541 \| good	36.799 \| good	0.576 \| good	3.555 \| good	0.236 \| good
2025-06-06T12:00:00.000Z	66 \| moderate	16.941 \| fine	39.768 \| good	36.595 \| good	0.625 \| good	4.256 \| good	0.291 \| good
2025-06-06T13:00:00.000Z	64 \| moderate	16.09 \| fine	33.286 \| good	31.003 \| good	0.534 \| good	5.052 \| good	0.237 \| good
2025-06-06T14:00:00.000Z	62 \| moderate	14.816 \| fine	24.994 \| good	37.516 \| good	0.624 \| good	4.388 \| good	0.243 \| good
2025-06-06T15:00:00.000Z	64 \| moderate	16.34 \| fine	39.85 \| good	34.897 \| good	0.526 \| good	3.46 \| good	0.251 \| good
2025-06-06T16:00:00.000Z	66 \| moderate	16.584 \| fine	52.087 \| good	45.789 \| good	0.379 \| good	4.715 \| good	0.258 \| good
2025-06-06T17:00:00.000Z	64 \| moderate	15.509 \| fine	27.567 \| good	49.474 \| good	0.337 \| good	5.121 \| good	0.28 \| good
2025-06-06T18:00:00.000Z	60 \| moderate	13.584 \| fine	59.035 \| fine	46.68 \| good	0.526 \| good	6.007 \| good	0.28 \| good
2025-06-06T19:00:00.000Z	62 \| moderate	14.801 \| fine	52.599 \| good	46.508 \| good	0.46 \| good	7.611 \| good	0.287 \| good
2025-06-06T20:00:00.000Z	64 \| moderate	16.241 \| fine	49.605 \| good	50.994 \| good	0.471 \| good	5.618 \| good	0.258 \| good
2025-06-06T21:00:00.000Z	64 \| moderate	16.241 \| fine	49.605 \| good	50.994 \| good	0.471 \| good	5.618 \| good	0.258 \| good
2025-06-06T22:00:00.000Z	71 \| moderate	8.91 \| good	39.228 \| good	61.36 \| fine	0.811 \| good	5.458 \| good	0.278 \| good
2025-06-06T23:00:00.000Z	80 \| moderate	8.453 \| good	36.97 \| good	64.009 \| fine	0.803 \| good	5.395 \| good	0.273 \| good
2025-06-07T00:00:00.000Z	58 \| moderate	6.236 \| good	27.43 \| good	56.607 \| fine	0.795 \| good	5.332 \| good	0.268 \| good
2025-06-07T01:00:00.000Z	58 \| moderate	6.345 \| good	27.98 \| good	57.458 \| fine	0.813 \| good	5.717 \| good	0.229 \| good
2025-06-07T02:00:00.000Z	58 \| moderate	6.872 \| good	30.518 \| good	56.785 \| fine	0.778 \| good	5.331 \| good	0.215 \| good
2025-06-07T03:00:00.000Z	61 \| moderate	7.161 \| good	31.58 \| good	57.69 \| fine	0.744 \| good	4.944 \| good	0.201 \| good
2025-06-07T04:00:00.000Z	51 \| moderate	7.949 \| good	34.619 \| good	55.094 \| fine	0.511 \| good	5.075 \| good	0.163 \| good
2025-06-07T05:00:00.000Z	45 \| good	7.381 \| good	32.366 \| good	48.661 \| good	0.44 \| good	4.766 \| good	0.155 \| good
2025-06-07T06:00:00.000Z	38 \| good	7.164 \| good	31.719 \| good	40.943 \| good	0.37 \| good	4.456 \| good	0.146 \| good
2025-06-07T07:00:00.000Z	38 \| good	7.169 \| good	31.719 \| good	35.222 \| good	0.555 \| good	4.764 \| good	0.166 \| good
2025-06-07T08:00:00.000Z	44 \| good	7.879 \| good	34.638 \| good	33.87 \| good	0.499 \| good	4.568 \| good	0.157 \| good
2025-06-07T09:00:00.000Z	38 \| good	7.132 \| good	31.44 \| good	29.196 \| good	0.444 \| good	4.373 \| good	0.149 \| good
2025-06-07T10:00:00.000Z	38 \| good	7.249 \| good	32.04 \| good	30.633 \| good	0.531 \| good	3.468 \| good	0.184 \| good
2025-06-07T11:00:00.000Z	44 \| good	7.542 \| good	33.136 \| good	33.097 \| good	0.483 \| good	3.383 \| good	0.177 \| good
2025-06-07T12:00:00.000Z	44 \| good	8.28 \| good	36.251 \| good	32.173 \| good	0.435 \| good	3.297 \| good	0.171 \| good
2025-06-07T13:00:00.000Z	38 \| good	7.291 \| good	32.293 \| good	34.247 \| good	0.351 \| good	1.971 \| good	0.198 \| good
2025-06-07T14:00:00.000Z	44 \| good	7.954 \| good	34.97 \| good	35.7 \| good	0.327 \| good	2 \| good	0.193 \| good
2025-06-07T15:00:00.000Z	44 \| good	8.084 \| good	35.426 \| good	37.52 \| good	0.303 \| good	2.029 \| good	0.187 \| good
2025-06-07T16:00:00.000Z	38 \| good	7.451 \| good	32.83 \| good	40.01 \| good	0.134 \| good	1.044 \| good	0.209 \| good
2025-06-07T17:00:00.000Z	38 \| good	6.804 \| good	30.013 \| good	41.194 \| good	0.138 \| good	1.115 \| good	0.205 \| good
2025-06-07T18:00:00.000Z	38 \| good	7.013 \| good	31.044 \| good	38.906 \| good	0.142 \| good	1.186 \| good	0.202 \| good
2025-06-07T19:00:00.000Z	42 \| good	6.943 \| good	30.719 \| good	45.284 \| good	0.218 \| good	0.953 \| good	0.23 \| good
2025-06-07T20:00:00.000Z	47 \| good	7.94 \| good	34.795 \| good	50.596 \| good	0.209 \| good	1.007 \| good	0.227 \| good
2025-06-07T21:00:00.000Z	49 \| good	8.908 \| good	39.423 \| good	51.192 \| good	0.2 \| good	1.062 \| good	0.225 \| good
2025-06-07T22:00:00.000Z	52 \| moderate	10.308 \| good	45.729 \| good	52.196 \| good	0.329 \| good	2.76 \| good	0.284 \| good
2025-06-07T23:00:00.000Z	62 \| moderate	15.273 \| fine	68.14 \| fine	51.865 \| good	0.316 \| good	2.71 \| good	0.28 \| good
2025-06-08T00:00:00.000Z	64 \| moderate	15.689 \| fine	69.382 \| fine	43.943 \| good	0.303 \| good	2.66 \| good	0.277 \| good
2025-06-08T01:00:00.000Z	66 \| moderate	16.704 \| fine	73.682 \| fine	40.511 \| good	0.462 \| good	3.31 \| good	0.308 \| good
2025-06-08T02:00:00.000Z	66 \| moderate	16.666 \| fine	73.858 \| fine	38.862 \| good	0.425 \| good	3.139 \| good	0.305 \| good
2025-06-08T03:00:00.000Z	62 \| moderate	14.586 \| fine	64.821 \| fine	37.798 \| good	0.388 \| good	2.967 \| good	0.302 \| good
2025-06-08T04:00:00.000Z	58 \| moderate	13.015 \| fine	58.369 \| fine	38.096 \| good	0.498 \| good	2.621 \| good	0.273 \| good
2025-06-08T05:00:00.000Z	54 \| moderate	11.464 \| good	50.954 \| good	37.779 \| good	0.459 \| good	2.363 \| good	0.27 \| good
2025-06-08T06:00:00.000Z	54 \| moderate	10.933 \| good	48.384 \| good	36.636 \| good	0.42 \| good	2.106 \| good	0.267 \| good
2025-06-08T07:00:00.000Z	54 \| moderate	11.478 \| good	50.969 \| good	34.941 \| good	0.558 \| good	2.2 \| good	0.247 \| good
2025-06-08T08:00:00.000Z	56 \| moderate	11.754 \| good	52.47 \| good	30.992 \| good	0.513 \| good	1.951 \| good	0.244 \| good
2025-06-08T09:00:00.000Z	60 \| moderate	13.771 \| fine	62.049 \| fine	28.219 \| good	0.469 \| good	1.702 \| good	0.242 \| good
2025-06-08T10:00:00.000Z	58 \| moderate	13.156 \| fine	59 \| fine	28.549 \| good	0.517 \| good	1.77 \| good	0.246 \| good
2025-06-08T11:00:00.000Z	56 \| moderate	11.842 \| good	52.859 \| good	32.239 \| good	0.471 \| good	1.688 \| good	0.246 \| good
2025-06-08T12:00:00.000Z	49 \| good	9.331 \| good	41.473 \| good	36.559 \| good	0.424 \| good	1.607 \| good	0.247 \| good
2025-06-08T13:00:00.000Z	44 \| good	7.562 \| good	33.187 \| good	36.612 \| good	0.432 \| good	1.085 \| good	0.256 \| good
2025-06-08T14:00:00.000Z	35 \| good	5.959 \| good	26.33 \| good	37.624 \| good	0.37 \| good	1.052 \| good	0.26 \| good
2025-06-08T15:00:00.000Z	38 \| good	7.227 \| good	31.768 \| good	38.123 \| good	0.309 \| good	1.018 \| good	0.264 \| good
2025-06-08T16:00:00.000Z	44 \| good	8.447 \| good	37.027 \| good	38.812 \| good	0.267 \| good	0.778 \| good	0.252 \| good
2025-06-08T17:00:00.000Z	44 \| good	8.345 \| good	36.754 \| good	39.165 \| good	0.272 \| good	0.793 \| good	0.254 \| good
2025-06-08T18:00:00.000Z	44 \| good	8.176 \| good	35.778 \| good	38.895 \| good	0.277 \| good	0.808 \| good	0.255 \| good
2025-06-08T19:00:00.000Z	52 \| moderate	9.813 \| good	43.634 \| good	42.783 \| good	0.296 \| good	2.107 \| good	0.256 \| good
2025-06-08T20:00:00.000Z	54 \| moderate	11.482 \| good	50.751 \| good	48.61 \| good	0.321 \| good	2.206 \| good	0.256 \| good
2025-06-08T21:00:00.000Z	52 \| moderate	10.432 \| good	46.369 \| good	47.569 \| good	0.346 \| good	2.305 \| good	0.255 \| good

Winchester

Get reliable air quality data to drive your business

Winchester, 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

Air quality levels in US

Check live rankings of places in the USA affected by air pollution.

View Polluted Cities

Check live rankings of places in the USA with the cleanest air.

View Clean Cities

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 01:00:00 on 2025-06-06.

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 11:00:00 on 2025-06-06.

What is the current air quality in Winchester, Connecticut?

The current air quality in Winchester, Connecticut is 64, 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 16.241 μg/m³.

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

The current PM₁₀ concentration at Winchester, Connecticut is 49.605 μg/m³.

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

The current carbon monoxide (CO) concentration at Winchester, Connecticut is 0.258 ppm.

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

The current sulfur dioxide (SO₂) concentration at Winchester, Connecticut is 0.471 ppb.

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

The current ozone (O₃) concentration at Winchester, Connecticut is 50.994 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Winchester, Connecticut is 5.618 ppb.

Certified

APIs

Refund Policy

Historical Climate Data

Terms & Conditions

Refund Policy

Terms & Conditions

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-04T22:00:00.000Z	122 \| sensitive	11.298 \| good	36.49 \| good	77.072 \| moderate	0.435 \| good	7.778 \| good	0.228 \| good
2025-06-04T23:00:00.000Z	133 \| sensitive	14.117 \| fine	51.363 \| good	80.04 \| moderate	0.438 \| good	6.865 \| good	0.25 \| good
2025-06-05T00:00:00.000Z	115 \| sensitive	13.55 \| fine	47.988 \| good	74.657 \| moderate	0.541 \| good	5.918 \| good	0.236 \| good
2025-06-05T01:00:00.000Z	108 \| sensitive	12.042 \| good	36.23 \| good	73.455 \| moderate	0.382 \| good	9.153 \| good	0.264 \| good
2025-06-05T02:00:00.000Z	97 \| moderate	11.685 \| good	27.302 \| good	69.195 \| fine	0.344 \| good	9.594 \| good	0.243 \| good
2025-06-05T03:00:00.000Z	87 \| moderate	11.975 \| good	31.444 \| good	65.734 \| fine	0.28 \| good	9.193 \| good	0.242 \| good
2025-06-05T04:00:00.000Z	93 \| moderate	11.713 \| good	53.729 \| good	67.92 \| fine	0.311 \| good	7.319 \| good	0.226 \| good
2025-06-05T05:00:00.000Z	97 \| moderate	13.597 \| fine	37.949 \| good	69.402 \| fine	0.57 \| good	8.083 \| good	0.204 \| good
2025-06-05T06:00:00.000Z	87 \| moderate	14.451 \| fine	30.535 \| good	65.548 \| fine	0.573 \| good	8.908 \| good	0.213 \| good
2025-06-05T07:00:00.000Z	84 \| moderate	13.271 \| fine	33.568 \| good	65.056 \| fine	0.361 \| good	6.094 \| good	0.213 \| good
2025-06-05T08:00:00.000Z	71 \| moderate	11.743 \| good	48.343 \| good	60.784 \| fine	0.306 \| good	6.189 \| good	0.213 \| good
2025-06-05T09:00:00.000Z	71 \| moderate	15.056 \| fine	31.427 \| good	60.868 \| fine	0.382 \| good	6.574 \| good	0.2 \| good
2025-06-05T10:00:00.000Z	64 \| moderate	15.504 \| fine	60.553 \| fine	53.989 \| good	0.384 \| good	6.882 \| good	0.229 \| good
2025-06-05T11:00:00.000Z	64 \| moderate	14.574 \| fine	48.524 \| good	58.71 \| fine	0.206 \| good	7.293 \| good	0.292 \| good
2025-06-05T12:00:00.000Z	67 \| moderate	18.079 \| fine	56.593 \| fine	57.633 \| fine	0.332 \| good	8.631 \| good	0.322 \| good
2025-06-05T13:00:00.000Z	64 \| moderate	15.746 \| fine	49.091 \| good	43.91 \| good	0.333 \| good	10.948 \| good	0.345 \| good
2025-06-05T14:00:00.000Z	64 \| moderate	16.198 \| fine	41.892 \| good	30.315 \| good	0.361 \| good	11.007 \| good	0.294 \| good
2025-06-05T15:00:00.000Z	66 \| moderate	16.924 \| fine	42.081 \| good	38.036 \| good	0.9 \| good	8.236 \| good	0.316 \| good
2025-06-05T16:00:00.000Z	73 \| moderate	21.02 \| fine	61.68 \| fine	36.441 \| good	0.886 \| good	12.457 \| good	0.316 \| good
2025-06-05T17:00:00.000Z	71 \| moderate	19.99 \| fine	56.258 \| fine	59.231 \| fine	0.474 \| good	8.364 \| good	0.301 \| good
2025-06-05T18:00:00.000Z	69 \| moderate	19.316 \| fine	50.531 \| good	60.134 \| fine	0.808 \| good	7.06 \| good	0.294 \| good
2025-06-05T19:00:00.000Z	87 \| moderate	19.292 \| fine	54.216 \| good	65.584 \| fine	0.871 \| good	5.417 \| good	0.294 \| good
2025-06-05T20:00:00.000Z	77 \| moderate	23.045 \| fine	79.939 \| fine	62.464 \| fine	0.715 \| good	5.254 \| good	0.309 \| good
2025-06-05T21:00:00.000Z	75 \| moderate	21.604 \| fine	91.329 \| fine	58.401 \| fine	0.743 \| good	4.916 \| good	0.288 \| good
2025-06-05T22:00:00.000Z	75 \| moderate	21.662 \| fine	77.476 \| fine	60.36 \| fine	0.673 \| good	2.786 \| good	0.302 \| good
2025-06-05T23:00:00.000Z	79 \| moderate	23.931 \| fine	70.004 \| fine	59.606 \| fine	0.702 \| good	2.539 \| good	0.335 \| good
2025-06-06T00:00:00.000Z	100 \| moderate	21.201 \| fine	86.191 \| fine	70.449 \| fine	0.389 \| good	3.368 \| good	0.343 \| good
2025-06-06T01:00:00.000Z	100 \| moderate	23.092 \| fine	43.336 \| good	70.203 \| fine	0.71 \| good	7.982 \| good	0.327 \| good
2025-06-06T02:00:00.000Z	73 \| moderate	21.047 \| fine	76.892 \| fine	50.972 \| good	0.57 \| good	7.474 \| good	0.306 \| good
2025-06-06T03:00:00.000Z	77 \| moderate	22.589 \| fine	75.542 \| fine	51.227 \| good	0.487 \| good	15.255 \| good	0.313 \| good
2025-06-06T04:00:00.000Z	97 \| moderate	21.594 \| fine	49.897 \| good	69.066 \| fine	0.446 \| good	5.436 \| good	0.31 \| good
2025-06-06T05:00:00.000Z	75 \| moderate	22.232 \| fine	47.828 \| good	54.483 \| good	0.227 \| good	15.182 \| good	0.289 \| good
2025-06-06T06:00:00.000Z	73 \| moderate	20.9 \| fine	35.503 \| good	60.054 \| fine	0.375 \| good	16.845 \| good	0.218 \| good
2025-06-06T07:00:00.000Z	71 \| moderate	19.85 \| fine	35.477 \| good	56.068 \| fine	0.602 \| good	8.863 \| good	0.211 \| good
2025-06-06T08:00:00.000Z	66 \| moderate	17.179 \| fine	66.789 \| fine	58.453 \| fine	0.585 \| good	6.986 \| good	0.211 \| good
2025-06-06T09:00:00.000Z	64 \| moderate	16.149 \| fine	68.696 \| fine	54.792 \| good	0.622 \| good	8.938 \| good	0.192 \| good
2025-06-06T10:00:00.000Z	60 \| moderate	14.232 \| fine	31.076 \| good	45.172 \| good	0.574 \| good	3.264 \| good	0.192 \| good
2025-06-06T11:00:00.000Z	58 \| moderate	13.329 \| fine	27.541 \| good	36.799 \| good	0.576 \| good	3.555 \| good	0.236 \| good
2025-06-06T12:00:00.000Z	66 \| moderate	16.941 \| fine	39.768 \| good	36.595 \| good	0.625 \| good	4.256 \| good	0.291 \| good
2025-06-06T13:00:00.000Z	64 \| moderate	16.09 \| fine	33.286 \| good	31.003 \| good	0.534 \| good	5.052 \| good	0.237 \| good
2025-06-06T14:00:00.000Z	62 \| moderate	14.816 \| fine	24.994 \| good	37.516 \| good	0.624 \| good	4.388 \| good	0.243 \| good
2025-06-06T15:00:00.000Z	64 \| moderate	16.34 \| fine	39.85 \| good	34.897 \| good	0.526 \| good	3.46 \| good	0.251 \| good
2025-06-06T16:00:00.000Z	66 \| moderate	16.584 \| fine	52.087 \| good	45.789 \| good	0.379 \| good	4.715 \| good	0.258 \| good
2025-06-06T17:00:00.000Z	64 \| moderate	15.509 \| fine	27.567 \| good	49.474 \| good	0.337 \| good	5.121 \| good	0.28 \| good
2025-06-06T18:00:00.000Z	60 \| moderate	13.584 \| fine	59.035 \| fine	46.68 \| good	0.526 \| good	6.007 \| good	0.28 \| good
2025-06-06T19:00:00.000Z	62 \| moderate	14.801 \| fine	52.599 \| good	46.508 \| good	0.46 \| good	7.611 \| good	0.287 \| good
2025-06-06T20:00:00.000Z	64 \| moderate	16.241 \| fine	49.605 \| good	50.994 \| good	0.471 \| good	5.618 \| good	0.258 \| good
2025-06-06T21:00:00.000Z	64 \| moderate	16.241 \| fine	49.605 \| good	50.994 \| good	0.471 \| good	5.618 \| good	0.258 \| good
2025-06-06T22:00:00.000Z	71 \| moderate	8.91 \| good	39.228 \| good	61.36 \| fine	0.811 \| good	5.458 \| good	0.278 \| good
2025-06-06T23:00:00.000Z	80 \| moderate	8.453 \| good	36.97 \| good	64.009 \| fine	0.803 \| good	5.395 \| good	0.273 \| good
2025-06-07T00:00:00.000Z	58 \| moderate	6.236 \| good	27.43 \| good	56.607 \| fine	0.795 \| good	5.332 \| good	0.268 \| good
2025-06-07T01:00:00.000Z	58 \| moderate	6.345 \| good	27.98 \| good	57.458 \| fine	0.813 \| good	5.717 \| good	0.229 \| good
2025-06-07T02:00:00.000Z	58 \| moderate	6.872 \| good	30.518 \| good	56.785 \| fine	0.778 \| good	5.331 \| good	0.215 \| good
2025-06-07T03:00:00.000Z	61 \| moderate	7.161 \| good	31.58 \| good	57.69 \| fine	0.744 \| good	4.944 \| good	0.201 \| good
2025-06-07T04:00:00.000Z	51 \| moderate	7.949 \| good	34.619 \| good	55.094 \| fine	0.511 \| good	5.075 \| good	0.163 \| good
2025-06-07T05:00:00.000Z	45 \| good	7.381 \| good	32.366 \| good	48.661 \| good	0.44 \| good	4.766 \| good	0.155 \| good
2025-06-07T06:00:00.000Z	38 \| good	7.164 \| good	31.719 \| good	40.943 \| good	0.37 \| good	4.456 \| good	0.146 \| good
2025-06-07T07:00:00.000Z	38 \| good	7.169 \| good	31.719 \| good	35.222 \| good	0.555 \| good	4.764 \| good	0.166 \| good
2025-06-07T08:00:00.000Z	44 \| good	7.879 \| good	34.638 \| good	33.87 \| good	0.499 \| good	4.568 \| good	0.157 \| good
2025-06-07T09:00:00.000Z	38 \| good	7.132 \| good	31.44 \| good	29.196 \| good	0.444 \| good	4.373 \| good	0.149 \| good
2025-06-07T10:00:00.000Z	38 \| good	7.249 \| good	32.04 \| good	30.633 \| good	0.531 \| good	3.468 \| good	0.184 \| good
2025-06-07T11:00:00.000Z	44 \| good	7.542 \| good	33.136 \| good	33.097 \| good	0.483 \| good	3.383 \| good	0.177 \| good
2025-06-07T12:00:00.000Z	44 \| good	8.28 \| good	36.251 \| good	32.173 \| good	0.435 \| good	3.297 \| good	0.171 \| good
2025-06-07T13:00:00.000Z	38 \| good	7.291 \| good	32.293 \| good	34.247 \| good	0.351 \| good	1.971 \| good	0.198 \| good
2025-06-07T14:00:00.000Z	44 \| good	7.954 \| good	34.97 \| good	35.7 \| good	0.327 \| good	2 \| good	0.193 \| good
2025-06-07T15:00:00.000Z	44 \| good	8.084 \| good	35.426 \| good	37.52 \| good	0.303 \| good	2.029 \| good	0.187 \| good
2025-06-07T16:00:00.000Z	38 \| good	7.451 \| good	32.83 \| good	40.01 \| good	0.134 \| good	1.044 \| good	0.209 \| good
2025-06-07T17:00:00.000Z	38 \| good	6.804 \| good	30.013 \| good	41.194 \| good	0.138 \| good	1.115 \| good	0.205 \| good
2025-06-07T18:00:00.000Z	38 \| good	7.013 \| good	31.044 \| good	38.906 \| good	0.142 \| good	1.186 \| good	0.202 \| good
2025-06-07T19:00:00.000Z	42 \| good	6.943 \| good	30.719 \| good	45.284 \| good	0.218 \| good	0.953 \| good	0.23 \| good
2025-06-07T20:00:00.000Z	47 \| good	7.94 \| good	34.795 \| good	50.596 \| good	0.209 \| good	1.007 \| good	0.227 \| good
2025-06-07T21:00:00.000Z	49 \| good	8.908 \| good	39.423 \| good	51.192 \| good	0.2 \| good	1.062 \| good	0.225 \| good
2025-06-07T22:00:00.000Z	52 \| moderate	10.308 \| good	45.729 \| good	52.196 \| good	0.329 \| good	2.76 \| good	0.284 \| good
2025-06-07T23:00:00.000Z	62 \| moderate	15.273 \| fine	68.14 \| fine	51.865 \| good	0.316 \| good	2.71 \| good	0.28 \| good
2025-06-08T00:00:00.000Z	64 \| moderate	15.689 \| fine	69.382 \| fine	43.943 \| good	0.303 \| good	2.66 \| good	0.277 \| good
2025-06-08T01:00:00.000Z	66 \| moderate	16.704 \| fine	73.682 \| fine	40.511 \| good	0.462 \| good	3.31 \| good	0.308 \| good
2025-06-08T02:00:00.000Z	66 \| moderate	16.666 \| fine	73.858 \| fine	38.862 \| good	0.425 \| good	3.139 \| good	0.305 \| good
2025-06-08T03:00:00.000Z	62 \| moderate	14.586 \| fine	64.821 \| fine	37.798 \| good	0.388 \| good	2.967 \| good	0.302 \| good
2025-06-08T04:00:00.000Z	58 \| moderate	13.015 \| fine	58.369 \| fine	38.096 \| good	0.498 \| good	2.621 \| good	0.273 \| good
2025-06-08T05:00:00.000Z	54 \| moderate	11.464 \| good	50.954 \| good	37.779 \| good	0.459 \| good	2.363 \| good	0.27 \| good
2025-06-08T06:00:00.000Z	54 \| moderate	10.933 \| good	48.384 \| good	36.636 \| good	0.42 \| good	2.106 \| good	0.267 \| good
2025-06-08T07:00:00.000Z	54 \| moderate	11.478 \| good	50.969 \| good	34.941 \| good	0.558 \| good	2.2 \| good	0.247 \| good
2025-06-08T08:00:00.000Z	56 \| moderate	11.754 \| good	52.47 \| good	30.992 \| good	0.513 \| good	1.951 \| good	0.244 \| good
2025-06-08T09:00:00.000Z	60 \| moderate	13.771 \| fine	62.049 \| fine	28.219 \| good	0.469 \| good	1.702 \| good	0.242 \| good
2025-06-08T10:00:00.000Z	58 \| moderate	13.156 \| fine	59 \| fine	28.549 \| good	0.517 \| good	1.77 \| good	0.246 \| good
2025-06-08T11:00:00.000Z	56 \| moderate	11.842 \| good	52.859 \| good	32.239 \| good	0.471 \| good	1.688 \| good	0.246 \| good
2025-06-08T12:00:00.000Z	49 \| good	9.331 \| good	41.473 \| good	36.559 \| good	0.424 \| good	1.607 \| good	0.247 \| good
2025-06-08T13:00:00.000Z	44 \| good	7.562 \| good	33.187 \| good	36.612 \| good	0.432 \| good	1.085 \| good	0.256 \| good
2025-06-08T14:00:00.000Z	35 \| good	5.959 \| good	26.33 \| good	37.624 \| good	0.37 \| good	1.052 \| good	0.26 \| good
2025-06-08T15:00:00.000Z	38 \| good	7.227 \| good	31.768 \| good	38.123 \| good	0.309 \| good	1.018 \| good	0.264 \| good
2025-06-08T16:00:00.000Z	44 \| good	8.447 \| good	37.027 \| good	38.812 \| good	0.267 \| good	0.778 \| good	0.252 \| good
2025-06-08T17:00:00.000Z	44 \| good	8.345 \| good	36.754 \| good	39.165 \| good	0.272 \| good	0.793 \| good	0.254 \| good
2025-06-08T18:00:00.000Z	44 \| good	8.176 \| good	35.778 \| good	38.895 \| good	0.277 \| good	0.808 \| good	0.255 \| good
2025-06-08T19:00:00.000Z	52 \| moderate	9.813 \| good	43.634 \| good	42.783 \| good	0.296 \| good	2.107 \| good	0.256 \| good
2025-06-08T20:00:00.000Z	54 \| moderate	11.482 \| good	50.751 \| good	48.61 \| good	0.321 \| good	2.206 \| good	0.256 \| good
2025-06-08T21:00:00.000Z	52 \| moderate	10.432 \| good	46.369 \| good	47.569 \| good	0.346 \| good	2.305 \| good	0.255 \| good

Live air quality index in Winchester, Connecticut today

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)

Track live Winchester, Connecticut air quality forecast and history

Get reliable air quality data to drive your business

Winchester, Connecticut air quality map: Track AQI near you

Air quality in nearby cities

Torrington, Connecticut

Canton, Connecticut

Plymouth, Connecticut

Avon, Connecticut

Simsbury, Connecticut

Granby, Connecticut

How accurate is Connecticut, USA air quality data?

Air quality levels in US

Frequently asked questions

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

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

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

What is the current air quality in Winchester, Connecticut?

What pollutant is the most common in Winchester, Connecticut?

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

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?