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

Currently, Stonington, Connecticut has a sulfur dioxide (SO2) concentration of 0.497 ppb.

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

The current ozone (O3) level in Stonington, Connecticut at the moment is 24.637 ppm.

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

Nitrogen dioxide (NO2) level in Stonington, Connecticut at the moment is 5.262 ppb.

Real-time air quality index in Stonington, Connecticut today

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

Stay updated with real-time air quality in Stonington, 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

Stonington, Connecticut

Last updated: ... (Local time)

Major air pollutants in Stonington, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

7.44 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

20.07 μg/m³

155

255

425

605+

Ozone (O₃)

24.64 ppb

201

201+

Sulfur Dioxide (SO₂)

0.50 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

5.26 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.21 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Stonington, Connecticut

Get Live Pollen Counts

Stonington, Connecticut

Scroll To Air Quality Map

Track live Stonington, Connecticut air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-05T12:00:00.000Z	54 \| moderate	11.068 \| good	32.801 \| good	34.557 \| good	0.384 \| good	16.194 \| good	0.472 \| good
2025-06-05T13:00:00.000Z	49 \| good	9.289 \| good	19.309 \| good	32.081 \| good	0.418 \| good	25.797 \| good	0.483 \| good
2025-06-05T14:00:00.000Z	58 \| moderate	13.378 \| fine	61.245 \| fine	39.452 \| good	0.574 \| good	22.09 \| good	0.442 \| good
2025-06-05T15:00:00.000Z	62 \| moderate	14.975 \| fine	69.771 \| fine	36.97 \| good	0.824 \| good	24.808 \| good	0.356 \| good
2025-06-05T16:00:00.000Z	64 \| moderate	15.579 \| fine	74.532 \| fine	46.319 \| good	0.721 \| good	27.907 \| good	0.356 \| good
2025-06-05T17:00:00.000Z	71 \| moderate	15.759 \| fine	73.778 \| fine	60.776 \| fine	0.715 \| good	26.061 \| good	0.356 \| good
2025-06-05T18:00:00.000Z	66 \| moderate	16.654 \| fine	82.292 \| fine	58.171 \| fine	0.685 \| good	19.666 \| good	0.397 \| good
2025-06-05T19:00:00.000Z	77 \| moderate	18.169 \| fine	28.799 \| good	63.045 \| fine	0.714 \| good	23.999 \| good	0.356 \| good
2025-06-05T20:00:00.000Z	115 \| sensitive	20.228 \| fine	54 \| good	75.164 \| moderate	0.573 \| good	21.202 \| good	0.375 \| good
2025-06-05T21:00:00.000Z	112 \| sensitive	19.88 \| fine	49.488 \| good	73.555 \| moderate	0.647 \| good	14.868 \| good	0.354 \| good
2025-06-05T22:00:00.000Z	140 \| sensitive	19.257 \| fine	70.149 \| fine	82.047 \| moderate	0.588 \| good	5.977 \| good	0.429 \| good
2025-06-05T23:00:00.000Z	90 \| moderate	17.71 \| fine	49.368 \| good	67.425 \| fine	0.622 \| good	5.832 \| good	0.451 \| good
2025-06-06T00:00:00.000Z	80 \| moderate	17.281 \| fine	48.884 \| good	63.578 \| fine	0.572 \| good	6.673 \| good	0.425 \| good
2025-06-06T01:00:00.000Z	71 \| moderate	17.622 \| fine	59.525 \| fine	61.189 \| fine	0.59 \| good	9.773 \| good	0.433 \| good
2025-06-06T02:00:00.000Z	77 \| moderate	16.77 \| fine	69.252 \| fine	62.872 \| fine	0.6 \| good	9.237 \| good	0.411 \| good
2025-06-06T03:00:00.000Z	64 \| moderate	14.752 \| fine	31.503 \| good	59.424 \| fine	0.572 \| good	16.238 \| good	0.431 \| good
2025-06-06T04:00:00.000Z	64 \| moderate	15.615 \| fine	65.269 \| fine	47.525 \| good	0.595 \| good	11.542 \| good	0.341 \| good
2025-06-06T05:00:00.000Z	64 \| moderate	15.814 \| fine	76.563 \| fine	44.668 \| good	0.404 \| good	11.8 \| good	0.289 \| good
2025-06-06T06:00:00.000Z	62 \| moderate	14.727 \| fine	76.143 \| fine	39.4 \| good	0.636 \| good	11.315 \| good	0.239 \| good
2025-06-06T07:00:00.000Z	66 \| moderate	16.659 \| fine	34.625 \| good	58.514 \| fine	0.483 \| good	12.815 \| good	0.267 \| good
2025-06-06T08:00:00.000Z	62 \| moderate	14.703 \| fine	56.451 \| fine	49.649 \| good	0.487 \| good	7.659 \| good	0.212 \| good
2025-06-06T09:00:00.000Z	58 \| moderate	13.422 \| fine	49.561 \| good	46.471 \| good	0.61 \| good	10.208 \| good	0.283 \| good
2025-06-06T10:00:00.000Z	60 \| moderate	14.445 \| fine	51.45 \| good	45.694 \| good	0.501 \| good	14.852 \| good	0.283 \| good
2025-06-06T11:00:00.000Z	58 \| moderate	12.567 \| fine	53.791 \| good	35.413 \| good	0.432 \| good	16.546 \| good	0.39 \| good
2025-06-06T12:00:00.000Z	58 \| moderate	13.06 \| fine	48.592 \| good	33.45 \| good	0.59 \| good	14.447 \| good	0.334 \| good
2025-06-06T13:00:00.000Z	69 \| moderate	18.512 \| fine	30.135 \| good	36.811 \| good	0.593 \| good	21.675 \| good	0.279 \| good
2025-06-06T14:00:00.000Z	66 \| moderate	16.714 \| fine	46.641 \| good	37.487 \| good	0.626 \| good	10.4 \| good	0.281 \| good
2025-06-06T15:00:00.000Z	64 \| moderate	16.173 \| fine	46.441 \| good	45.996 \| good	0.455 \| good	10.414 \| good	0.3 \| good
2025-06-06T16:00:00.000Z	64 \| moderate	16.039 \| fine	55.437 \| fine	49.589 \| good	0.416 \| good	6.317 \| good	0.3 \| good
2025-06-06T17:00:00.000Z	67 \| moderate	17.852 \| fine	61.337 \| fine	48.972 \| good	0.338 \| good	7.956 \| good	0.307 \| good
2025-06-06T18:00:00.000Z	66 \| moderate	17.211 \| fine	42.539 \| good	51.102 \| good	0.517 \| good	10.768 \| good	0.321 \| good
2025-06-06T19:00:00.000Z	64 \| moderate	15.257 \| fine	51.657 \| good	58.819 \| fine	0.543 \| good	9.296 \| good	0.36 \| good
2025-06-06T20:00:00.000Z	71 \| moderate	14.423 \| fine	53.588 \| good	61.1 \| fine	0.559 \| good	6.97 \| good	0.305 \| good
2025-06-06T21:00:00.000Z	67 \| moderate	13.768 \| fine	36.455 \| good	59.757 \| fine	0.464 \| good	6.805 \| good	0.368 \| good
2025-06-06T22:00:00.000Z	62 \| moderate	14.864 \| fine	57.232 \| fine	53.949 \| good	0.599 \| good	8.379 \| good	0.349 \| good
2025-06-06T23:00:00.000Z	62 \| moderate	14.892 \| fine	48.978 \| good	49.278 \| good	0.641 \| good	6.949 \| good	0.362 \| good
2025-06-07T00:00:00.000Z	52 \| moderate	9.787 \| good	34.376 \| good	41.162 \| good	0.485 \| good	6.812 \| good	0.334 \| good
2025-06-07T01:00:00.000Z	44 \| good	8.497 \| good	39.95 \| good	34.122 \| good	0.348 \| good	8.478 \| good	0.275 \| good
2025-06-07T02:00:00.000Z	52 \| moderate	9.98 \| good	22.982 \| good	36.017 \| good	0.486 \| good	8.174 \| good	0.283 \| good
2025-06-07T03:00:00.000Z	38 \| good	7.316 \| good	21.376 \| good	33.579 \| good	0.532 \| good	4.047 \| good	0.214 \| good
2025-06-07T04:00:00.000Z	44 \| good	7.673 \| good	17.207 \| good	39.706 \| good	0.544 \| good	5.017 \| good	0.21 \| good
2025-06-07T05:00:00.000Z	44 \| good	7.904 \| good	17.707 \| good	36.505 \| good	0.955 \| good	3.642 \| good	0.172 \| good
2025-06-07T06:00:00.000Z	44 \| good	7.53 \| good	21.178 \| good	33.37 \| good	0.934 \| good	3.151 \| good	0.172 \| good
2025-06-07T07:00:00.000Z	38 \| good	7.241 \| good	21.706 \| good	29.668 \| good	0.482 \| good	4.167 \| good	0.231 \| good
2025-06-07T08:00:00.000Z	49 \| good	9.14 \| good	34.01 \| good	28.198 \| good	0.497 \| good	4.683 \| good	0.255 \| good
2025-06-07T09:00:00.000Z	27 \| good	4.963 \| good	14.262 \| good	27.548 \| good	0.49 \| good	8.61 \| good	0.227 \| good
2025-06-07T10:00:00.000Z	38 \| good	7.437 \| good	20.069 \| good	24.637 \| good	0.497 \| good	5.262 \| good	0.215 \| good
2025-06-07T11:00:00.000Z	33 \| good	5.513 \| good	15.688 \| good	26.33 \| good	0.472 \| good	3.264 \| good	0.2 \| good
2025-06-07T11:00:00.000Z	38 \| good	7.437 \| good	20.069 \| good	24.637 \| good	0.497 \| good	5.262 \| good	0.215 \| good
2025-06-07T12:00:00.000Z	49 \| good	9.43 \| good	42.231 \| good	36.923 \| good	0.072 \| good	3.177 \| good	0.163 \| good
2025-06-07T13:00:00.000Z	44 \| good	8.336 \| good	36.806 \| good	35.989 \| good	0.139 \| good	5.199 \| good	0.189 \| good
2025-06-07T14:00:00.000Z	49 \| good	9.206 \| good	41.08 \| good	34.686 \| good	0.127 \| good	4.622 \| good	0.181 \| good
2025-06-07T15:00:00.000Z	52 \| moderate	9.526 \| good	42.636 \| good	37.051 \| good	0.115 \| good	4.045 \| good	0.174 \| good
2025-06-07T16:00:00.000Z	49 \| good	9.119 \| good	40.912 \| good	36.741 \| good	0.19 \| good	5.383 \| good	0.212 \| good
2025-06-07T17:00:00.000Z	49 \| good	9.238 \| good	41.109 \| good	36.957 \| good	0.161 \| good	4.428 \| good	0.195 \| good
2025-06-07T18:00:00.000Z	44 \| good	7.594 \| good	33.494 \| good	38.313 \| good	0.133 \| good	3.473 \| good	0.177 \| good
2025-06-07T19:00:00.000Z	49 \| good	8.911 \| good	39.133 \| good	43.441 \| good	0.194 \| good	5.331 \| good	0.208 \| good
2025-06-07T20:00:00.000Z	49 \| good	9.185 \| good	40.976 \| good	47.999 \| good	0.161 \| good	4.465 \| good	0.193 \| good
2025-06-07T21:00:00.000Z	54 \| moderate	10.657 \| good	47.441 \| good	51.145 \| good	0.128 \| good	3.599 \| good	0.178 \| good
2025-06-07T22:00:00.000Z	54 \| moderate	10.583 \| good	46.872 \| good	50.698 \| good	0.207 \| good	6.507 \| good	0.196 \| good
2025-06-07T23:00:00.000Z	54 \| moderate	11.307 \| good	50.063 \| good	47.255 \| good	0.172 \| good	5.936 \| good	0.186 \| good
2025-06-08T00:00:00.000Z	44 \| good	7.901 \| good	34.471 \| good	40.176 \| good	0.136 \| good	5.366 \| good	0.175 \| good
2025-06-08T01:00:00.000Z	44 \| good	8.078 \| good	35.523 \| good	36.675 \| good	0.347 \| good	7.022 \| good	0.222 \| good
2025-06-08T02:00:00.000Z	38 \| good	7.468 \| good	33.016 \| good	33.295 \| good	0.292 \| good	6.597 \| good	0.21 \| good
2025-06-08T03:00:00.000Z	44 \| good	7.543 \| good	33.031 \| good	31.992 \| good	0.237 \| good	6.171 \| good	0.198 \| good
2025-06-08T04:00:00.000Z	44 \| good	8.449 \| good	36.927 \| good	33.515 \| good	0.385 \| good	4.583 \| good	0.24 \| good
2025-06-08T05:00:00.000Z	54 \| moderate	11.09 \| good	49.236 \| good	31.485 \| good	0.344 \| good	4.578 \| good	0.233 \| good
2025-06-08T06:00:00.000Z	58 \| moderate	12.769 \| fine	57.487 \| fine	28.627 \| good	0.302 \| good	4.573 \| good	0.227 \| good
2025-06-08T07:00:00.000Z	60 \| moderate	13.677 \| fine	61.926 \| fine	23.881 \| good	0.357 \| good	3.202 \| good	0.226 \| good
2025-06-08T08:00:00.000Z	60 \| moderate	13.932 \| fine	62.38 \| fine	19.396 \| good	0.362 \| good	3.488 \| good	0.221 \| good
2025-06-08T09:00:00.000Z	60 \| moderate	14.234 \| fine	63.243 \| fine	20.54 \| good	0.366 \| good	3.773 \| good	0.216 \| good
2025-06-08T10:00:00.000Z	56 \| moderate	12.474 \| fine	56.624 \| fine	21.224 \| good	0.355 \| good	3.804 \| good	0.196 \| good
2025-06-08T11:00:00.000Z	56 \| moderate	11.639 \| good	51.585 \| good	21.943 \| good	0.352 \| good	3.803 \| good	0.189 \| good
2025-06-08T12:00:00.000Z	56 \| moderate	11.891 \| good	52.515 \| good	21.879 \| good	0.348 \| good	3.802 \| good	0.181 \| good
2025-06-08T13:00:00.000Z	54 \| moderate	10.668 \| good	47.297 \| good	24.674 \| good	0.253 \| good	2.622 \| good	0.185 \| good
2025-06-08T14:00:00.000Z	56 \| moderate	12.151 \| fine	54.246 \| good	29.264 \| good	0.23 \| good	2.464 \| good	0.179 \| good
2025-06-08T15:00:00.000Z	56 \| moderate	12.242 \| fine	54.948 \| good	40.022 \| good	0.208 \| good	2.306 \| good	0.172 \| good
2025-06-08T16:00:00.000Z	58 \| moderate	13.139 \| fine	59.033 \| fine	41.488 \| good	0.2 \| good	1.982 \| good	0.204 \| good
2025-06-08T17:00:00.000Z	56 \| moderate	11.933 \| good	53.04 \| good	44.947 \| good	0.182 \| good	1.753 \| good	0.198 \| good
2025-06-08T18:00:00.000Z	56 \| moderate	12.47 \| fine	56.346 \| fine	47.911 \| good	0.165 \| good	1.523 \| good	0.192 \| good
2025-06-08T19:00:00.000Z	56 \| moderate	11.592 \| good	51.083 \| good	45.689 \| good	0.165 \| good	2.597 \| good	0.218 \| good
2025-06-08T20:00:00.000Z	54 \| moderate	11.301 \| good	50.109 \| good	45.016 \| good	0.152 \| good	2.347 \| good	0.217 \| good
2025-06-08T21:00:00.000Z	54 \| moderate	10.754 \| good	47.592 \| good	47.806 \| good	0.139 \| good	2.096 \| good	0.216 \| good
2025-06-08T22:00:00.000Z	54 \| moderate	11.259 \| good	49.465 \| good	46.538 \| good	0.225 \| good	5.813 \| good	0.261 \| good
2025-06-08T23:00:00.000Z	54 \| moderate	11.443 \| good	50.604 \| good	47.64 \| good	0.215 \| good	4.99 \| good	0.257 \| good
2025-06-09T00:00:00.000Z	44 \| good	8.338 \| good	36.543 \| good	39.752 \| good	0.205 \| good	4.167 \| good	0.253 \| good
2025-06-09T01:00:00.000Z	49 \| good	9.214 \| good	40.847 \| good	42.09 \| good	0.373 \| good	6.559 \| good	0.274 \| good
2025-06-09T02:00:00.000Z	52 \| moderate	9.677 \| good	42.848 \| good	43.919 \| good	0.358 \| good	5.707 \| good	0.264 \| good
2025-06-09T03:00:00.000Z	52 \| moderate	9.932 \| good	44.458 \| good	42.514 \| good	0.342 \| good	4.856 \| good	0.255 \| good
2025-06-09T04:00:00.000Z	52 \| moderate	9.514 \| good	42.54 \| good	38.814 \| good	0.48 \| good	6.829 \| good	0.276 \| good
2025-06-09T05:00:00.000Z	44 \| good	8.194 \| good	35.966 \| good	38.343 \| good	0.467 \| good	5.957 \| good	0.263 \| good
2025-06-09T06:00:00.000Z	38 \| good	6.771 \| good	7.468 \| good	37.242 \| good	0.459 \| good	5.102 \| good	0.251 \| good
2025-06-09T07:00:00.000Z	44 \| good	7.799 \| good	34.143 \| good	38.873 \| good	0.621 \| good	5.931 \| good	0.267 \| good
2025-06-09T08:00:00.000Z	44 \| good	8.222 \| good	35.88 \| good	38.688 \| good	0.62 \| good	5.58 \| good	0.259 \| good
2025-06-09T09:00:00.000Z	44 \| good	7.687 \| good	33.731 \| good	38.659 \| good	0.619 \| good	5.23 \| good	0.25 \| good
2025-06-09T10:00:00.000Z	38 \| good	7.196 \| good	31.477 \| good	38.183 \| good	0.764 \| good	5.052 \| good	0.262 \| good
2025-06-09T11:00:00.000Z	38 \| good	6.594 \| good	29.055 \| good	37.592 \| good	0.775 \| good	5.191 \| good	0.261 \| good

Stonington

Get reliable air quality data to drive your business

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

0.20ppm

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 Stonington, Connecticut?

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

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

In the past 24 hours, the air quality in Stonington, Connecticut was at its worst at 08:00:00 on 2025-06-06.

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

In the last 24 hours, the best air quality in Stonington, Connecticut was observed at 09:00:00 on 2025-06-07.

What is the AQI in Stonington, Connecticut right now?

As of now, the AQI in Stonington, Connecticut is 38, indicating Good conditions.

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

Stonington, Connecticut air has the highest levels of PM2.5.

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

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

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

PM_2.5 levels in Stonington, Connecticut are currently 7.437 μg/m³.

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

The PM₁₀ concentration in Stonington, Connecticut is 20.069 μg/m³ at the moment.

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

The current carbon monoxide (CO) concentration in Stonington, Connecticut is 0.215 ppm.

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

Currently, Stonington, Connecticut has a sulfur dioxide (SO₂) concentration of 0.497 ppb.

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

The current ozone (O₃) level in Stonington, Connecticut at the moment is 24.637 ppm.

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

Nitrogen dioxide (NO₂) level in Stonington, Connecticut at the moment is 5.262 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-06-05T12:00:00.000Z	54 \| moderate	11.068 \| good	32.801 \| good	34.557 \| good	0.384 \| good	16.194 \| good	0.472 \| good
2025-06-05T13:00:00.000Z	49 \| good	9.289 \| good	19.309 \| good	32.081 \| good	0.418 \| good	25.797 \| good	0.483 \| good
2025-06-05T14:00:00.000Z	58 \| moderate	13.378 \| fine	61.245 \| fine	39.452 \| good	0.574 \| good	22.09 \| good	0.442 \| good
2025-06-05T15:00:00.000Z	62 \| moderate	14.975 \| fine	69.771 \| fine	36.97 \| good	0.824 \| good	24.808 \| good	0.356 \| good
2025-06-05T16:00:00.000Z	64 \| moderate	15.579 \| fine	74.532 \| fine	46.319 \| good	0.721 \| good	27.907 \| good	0.356 \| good
2025-06-05T17:00:00.000Z	71 \| moderate	15.759 \| fine	73.778 \| fine	60.776 \| fine	0.715 \| good	26.061 \| good	0.356 \| good
2025-06-05T18:00:00.000Z	66 \| moderate	16.654 \| fine	82.292 \| fine	58.171 \| fine	0.685 \| good	19.666 \| good	0.397 \| good
2025-06-05T19:00:00.000Z	77 \| moderate	18.169 \| fine	28.799 \| good	63.045 \| fine	0.714 \| good	23.999 \| good	0.356 \| good
2025-06-05T20:00:00.000Z	115 \| sensitive	20.228 \| fine	54 \| good	75.164 \| moderate	0.573 \| good	21.202 \| good	0.375 \| good
2025-06-05T21:00:00.000Z	112 \| sensitive	19.88 \| fine	49.488 \| good	73.555 \| moderate	0.647 \| good	14.868 \| good	0.354 \| good
2025-06-05T22:00:00.000Z	140 \| sensitive	19.257 \| fine	70.149 \| fine	82.047 \| moderate	0.588 \| good	5.977 \| good	0.429 \| good
2025-06-05T23:00:00.000Z	90 \| moderate	17.71 \| fine	49.368 \| good	67.425 \| fine	0.622 \| good	5.832 \| good	0.451 \| good
2025-06-06T00:00:00.000Z	80 \| moderate	17.281 \| fine	48.884 \| good	63.578 \| fine	0.572 \| good	6.673 \| good	0.425 \| good
2025-06-06T01:00:00.000Z	71 \| moderate	17.622 \| fine	59.525 \| fine	61.189 \| fine	0.59 \| good	9.773 \| good	0.433 \| good
2025-06-06T02:00:00.000Z	77 \| moderate	16.77 \| fine	69.252 \| fine	62.872 \| fine	0.6 \| good	9.237 \| good	0.411 \| good
2025-06-06T03:00:00.000Z	64 \| moderate	14.752 \| fine	31.503 \| good	59.424 \| fine	0.572 \| good	16.238 \| good	0.431 \| good
2025-06-06T04:00:00.000Z	64 \| moderate	15.615 \| fine	65.269 \| fine	47.525 \| good	0.595 \| good	11.542 \| good	0.341 \| good
2025-06-06T05:00:00.000Z	64 \| moderate	15.814 \| fine	76.563 \| fine	44.668 \| good	0.404 \| good	11.8 \| good	0.289 \| good
2025-06-06T06:00:00.000Z	62 \| moderate	14.727 \| fine	76.143 \| fine	39.4 \| good	0.636 \| good	11.315 \| good	0.239 \| good
2025-06-06T07:00:00.000Z	66 \| moderate	16.659 \| fine	34.625 \| good	58.514 \| fine	0.483 \| good	12.815 \| good	0.267 \| good
2025-06-06T08:00:00.000Z	62 \| moderate	14.703 \| fine	56.451 \| fine	49.649 \| good	0.487 \| good	7.659 \| good	0.212 \| good
2025-06-06T09:00:00.000Z	58 \| moderate	13.422 \| fine	49.561 \| good	46.471 \| good	0.61 \| good	10.208 \| good	0.283 \| good
2025-06-06T10:00:00.000Z	60 \| moderate	14.445 \| fine	51.45 \| good	45.694 \| good	0.501 \| good	14.852 \| good	0.283 \| good
2025-06-06T11:00:00.000Z	58 \| moderate	12.567 \| fine	53.791 \| good	35.413 \| good	0.432 \| good	16.546 \| good	0.39 \| good
2025-06-06T12:00:00.000Z	58 \| moderate	13.06 \| fine	48.592 \| good	33.45 \| good	0.59 \| good	14.447 \| good	0.334 \| good
2025-06-06T13:00:00.000Z	69 \| moderate	18.512 \| fine	30.135 \| good	36.811 \| good	0.593 \| good	21.675 \| good	0.279 \| good
2025-06-06T14:00:00.000Z	66 \| moderate	16.714 \| fine	46.641 \| good	37.487 \| good	0.626 \| good	10.4 \| good	0.281 \| good
2025-06-06T15:00:00.000Z	64 \| moderate	16.173 \| fine	46.441 \| good	45.996 \| good	0.455 \| good	10.414 \| good	0.3 \| good
2025-06-06T16:00:00.000Z	64 \| moderate	16.039 \| fine	55.437 \| fine	49.589 \| good	0.416 \| good	6.317 \| good	0.3 \| good
2025-06-06T17:00:00.000Z	67 \| moderate	17.852 \| fine	61.337 \| fine	48.972 \| good	0.338 \| good	7.956 \| good	0.307 \| good
2025-06-06T18:00:00.000Z	66 \| moderate	17.211 \| fine	42.539 \| good	51.102 \| good	0.517 \| good	10.768 \| good	0.321 \| good
2025-06-06T19:00:00.000Z	64 \| moderate	15.257 \| fine	51.657 \| good	58.819 \| fine	0.543 \| good	9.296 \| good	0.36 \| good
2025-06-06T20:00:00.000Z	71 \| moderate	14.423 \| fine	53.588 \| good	61.1 \| fine	0.559 \| good	6.97 \| good	0.305 \| good
2025-06-06T21:00:00.000Z	67 \| moderate	13.768 \| fine	36.455 \| good	59.757 \| fine	0.464 \| good	6.805 \| good	0.368 \| good
2025-06-06T22:00:00.000Z	62 \| moderate	14.864 \| fine	57.232 \| fine	53.949 \| good	0.599 \| good	8.379 \| good	0.349 \| good
2025-06-06T23:00:00.000Z	62 \| moderate	14.892 \| fine	48.978 \| good	49.278 \| good	0.641 \| good	6.949 \| good	0.362 \| good
2025-06-07T00:00:00.000Z	52 \| moderate	9.787 \| good	34.376 \| good	41.162 \| good	0.485 \| good	6.812 \| good	0.334 \| good
2025-06-07T01:00:00.000Z	44 \| good	8.497 \| good	39.95 \| good	34.122 \| good	0.348 \| good	8.478 \| good	0.275 \| good
2025-06-07T02:00:00.000Z	52 \| moderate	9.98 \| good	22.982 \| good	36.017 \| good	0.486 \| good	8.174 \| good	0.283 \| good
2025-06-07T03:00:00.000Z	38 \| good	7.316 \| good	21.376 \| good	33.579 \| good	0.532 \| good	4.047 \| good	0.214 \| good
2025-06-07T04:00:00.000Z	44 \| good	7.673 \| good	17.207 \| good	39.706 \| good	0.544 \| good	5.017 \| good	0.21 \| good
2025-06-07T05:00:00.000Z	44 \| good	7.904 \| good	17.707 \| good	36.505 \| good	0.955 \| good	3.642 \| good	0.172 \| good
2025-06-07T06:00:00.000Z	44 \| good	7.53 \| good	21.178 \| good	33.37 \| good	0.934 \| good	3.151 \| good	0.172 \| good
2025-06-07T07:00:00.000Z	38 \| good	7.241 \| good	21.706 \| good	29.668 \| good	0.482 \| good	4.167 \| good	0.231 \| good
2025-06-07T08:00:00.000Z	49 \| good	9.14 \| good	34.01 \| good	28.198 \| good	0.497 \| good	4.683 \| good	0.255 \| good
2025-06-07T09:00:00.000Z	27 \| good	4.963 \| good	14.262 \| good	27.548 \| good	0.49 \| good	8.61 \| good	0.227 \| good
2025-06-07T10:00:00.000Z	38 \| good	7.437 \| good	20.069 \| good	24.637 \| good	0.497 \| good	5.262 \| good	0.215 \| good
2025-06-07T11:00:00.000Z	33 \| good	5.513 \| good	15.688 \| good	26.33 \| good	0.472 \| good	3.264 \| good	0.2 \| good
2025-06-07T11:00:00.000Z	38 \| good	7.437 \| good	20.069 \| good	24.637 \| good	0.497 \| good	5.262 \| good	0.215 \| good
2025-06-07T12:00:00.000Z	49 \| good	9.43 \| good	42.231 \| good	36.923 \| good	0.072 \| good	3.177 \| good	0.163 \| good
2025-06-07T13:00:00.000Z	44 \| good	8.336 \| good	36.806 \| good	35.989 \| good	0.139 \| good	5.199 \| good	0.189 \| good
2025-06-07T14:00:00.000Z	49 \| good	9.206 \| good	41.08 \| good	34.686 \| good	0.127 \| good	4.622 \| good	0.181 \| good
2025-06-07T15:00:00.000Z	52 \| moderate	9.526 \| good	42.636 \| good	37.051 \| good	0.115 \| good	4.045 \| good	0.174 \| good
2025-06-07T16:00:00.000Z	49 \| good	9.119 \| good	40.912 \| good	36.741 \| good	0.19 \| good	5.383 \| good	0.212 \| good
2025-06-07T17:00:00.000Z	49 \| good	9.238 \| good	41.109 \| good	36.957 \| good	0.161 \| good	4.428 \| good	0.195 \| good
2025-06-07T18:00:00.000Z	44 \| good	7.594 \| good	33.494 \| good	38.313 \| good	0.133 \| good	3.473 \| good	0.177 \| good
2025-06-07T19:00:00.000Z	49 \| good	8.911 \| good	39.133 \| good	43.441 \| good	0.194 \| good	5.331 \| good	0.208 \| good
2025-06-07T20:00:00.000Z	49 \| good	9.185 \| good	40.976 \| good	47.999 \| good	0.161 \| good	4.465 \| good	0.193 \| good
2025-06-07T21:00:00.000Z	54 \| moderate	10.657 \| good	47.441 \| good	51.145 \| good	0.128 \| good	3.599 \| good	0.178 \| good
2025-06-07T22:00:00.000Z	54 \| moderate	10.583 \| good	46.872 \| good	50.698 \| good	0.207 \| good	6.507 \| good	0.196 \| good
2025-06-07T23:00:00.000Z	54 \| moderate	11.307 \| good	50.063 \| good	47.255 \| good	0.172 \| good	5.936 \| good	0.186 \| good
2025-06-08T00:00:00.000Z	44 \| good	7.901 \| good	34.471 \| good	40.176 \| good	0.136 \| good	5.366 \| good	0.175 \| good
2025-06-08T01:00:00.000Z	44 \| good	8.078 \| good	35.523 \| good	36.675 \| good	0.347 \| good	7.022 \| good	0.222 \| good
2025-06-08T02:00:00.000Z	38 \| good	7.468 \| good	33.016 \| good	33.295 \| good	0.292 \| good	6.597 \| good	0.21 \| good
2025-06-08T03:00:00.000Z	44 \| good	7.543 \| good	33.031 \| good	31.992 \| good	0.237 \| good	6.171 \| good	0.198 \| good
2025-06-08T04:00:00.000Z	44 \| good	8.449 \| good	36.927 \| good	33.515 \| good	0.385 \| good	4.583 \| good	0.24 \| good
2025-06-08T05:00:00.000Z	54 \| moderate	11.09 \| good	49.236 \| good	31.485 \| good	0.344 \| good	4.578 \| good	0.233 \| good
2025-06-08T06:00:00.000Z	58 \| moderate	12.769 \| fine	57.487 \| fine	28.627 \| good	0.302 \| good	4.573 \| good	0.227 \| good
2025-06-08T07:00:00.000Z	60 \| moderate	13.677 \| fine	61.926 \| fine	23.881 \| good	0.357 \| good	3.202 \| good	0.226 \| good
2025-06-08T08:00:00.000Z	60 \| moderate	13.932 \| fine	62.38 \| fine	19.396 \| good	0.362 \| good	3.488 \| good	0.221 \| good
2025-06-08T09:00:00.000Z	60 \| moderate	14.234 \| fine	63.243 \| fine	20.54 \| good	0.366 \| good	3.773 \| good	0.216 \| good
2025-06-08T10:00:00.000Z	56 \| moderate	12.474 \| fine	56.624 \| fine	21.224 \| good	0.355 \| good	3.804 \| good	0.196 \| good
2025-06-08T11:00:00.000Z	56 \| moderate	11.639 \| good	51.585 \| good	21.943 \| good	0.352 \| good	3.803 \| good	0.189 \| good
2025-06-08T12:00:00.000Z	56 \| moderate	11.891 \| good	52.515 \| good	21.879 \| good	0.348 \| good	3.802 \| good	0.181 \| good
2025-06-08T13:00:00.000Z	54 \| moderate	10.668 \| good	47.297 \| good	24.674 \| good	0.253 \| good	2.622 \| good	0.185 \| good
2025-06-08T14:00:00.000Z	56 \| moderate	12.151 \| fine	54.246 \| good	29.264 \| good	0.23 \| good	2.464 \| good	0.179 \| good
2025-06-08T15:00:00.000Z	56 \| moderate	12.242 \| fine	54.948 \| good	40.022 \| good	0.208 \| good	2.306 \| good	0.172 \| good
2025-06-08T16:00:00.000Z	58 \| moderate	13.139 \| fine	59.033 \| fine	41.488 \| good	0.2 \| good	1.982 \| good	0.204 \| good
2025-06-08T17:00:00.000Z	56 \| moderate	11.933 \| good	53.04 \| good	44.947 \| good	0.182 \| good	1.753 \| good	0.198 \| good
2025-06-08T18:00:00.000Z	56 \| moderate	12.47 \| fine	56.346 \| fine	47.911 \| good	0.165 \| good	1.523 \| good	0.192 \| good
2025-06-08T19:00:00.000Z	56 \| moderate	11.592 \| good	51.083 \| good	45.689 \| good	0.165 \| good	2.597 \| good	0.218 \| good
2025-06-08T20:00:00.000Z	54 \| moderate	11.301 \| good	50.109 \| good	45.016 \| good	0.152 \| good	2.347 \| good	0.217 \| good
2025-06-08T21:00:00.000Z	54 \| moderate	10.754 \| good	47.592 \| good	47.806 \| good	0.139 \| good	2.096 \| good	0.216 \| good
2025-06-08T22:00:00.000Z	54 \| moderate	11.259 \| good	49.465 \| good	46.538 \| good	0.225 \| good	5.813 \| good	0.261 \| good
2025-06-08T23:00:00.000Z	54 \| moderate	11.443 \| good	50.604 \| good	47.64 \| good	0.215 \| good	4.99 \| good	0.257 \| good
2025-06-09T00:00:00.000Z	44 \| good	8.338 \| good	36.543 \| good	39.752 \| good	0.205 \| good	4.167 \| good	0.253 \| good
2025-06-09T01:00:00.000Z	49 \| good	9.214 \| good	40.847 \| good	42.09 \| good	0.373 \| good	6.559 \| good	0.274 \| good
2025-06-09T02:00:00.000Z	52 \| moderate	9.677 \| good	42.848 \| good	43.919 \| good	0.358 \| good	5.707 \| good	0.264 \| good
2025-06-09T03:00:00.000Z	52 \| moderate	9.932 \| good	44.458 \| good	42.514 \| good	0.342 \| good	4.856 \| good	0.255 \| good
2025-06-09T04:00:00.000Z	52 \| moderate	9.514 \| good	42.54 \| good	38.814 \| good	0.48 \| good	6.829 \| good	0.276 \| good
2025-06-09T05:00:00.000Z	44 \| good	8.194 \| good	35.966 \| good	38.343 \| good	0.467 \| good	5.957 \| good	0.263 \| good
2025-06-09T06:00:00.000Z	38 \| good	6.771 \| good	7.468 \| good	37.242 \| good	0.459 \| good	5.102 \| good	0.251 \| good
2025-06-09T07:00:00.000Z	44 \| good	7.799 \| good	34.143 \| good	38.873 \| good	0.621 \| good	5.931 \| good	0.267 \| good
2025-06-09T08:00:00.000Z	44 \| good	8.222 \| good	35.88 \| good	38.688 \| good	0.62 \| good	5.58 \| good	0.259 \| good
2025-06-09T09:00:00.000Z	44 \| good	7.687 \| good	33.731 \| good	38.659 \| good	0.619 \| good	5.23 \| good	0.25 \| good
2025-06-09T10:00:00.000Z	38 \| good	7.196 \| good	31.477 \| good	38.183 \| good	0.764 \| good	5.052 \| good	0.262 \| good
2025-06-09T11:00:00.000Z	38 \| good	6.594 \| good	29.055 \| good	37.592 \| good	0.775 \| good	5.191 \| good	0.261 \| good

Real-time air quality index in Stonington, Connecticut today

Major air pollutants in Stonington, Connecticut

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Stonington, Connecticut air quality forecast and history

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

Air quality in nearby cities

Westerly, Rhode Island

Groton, Connecticut

Ledyard, Connecticut

New London, Connecticut

Waterford, Connecticut

Montville, Connecticut

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Frequently asked questions

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

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

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

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

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

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

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

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

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

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