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

The current PM10 concentration at Groton, Connecticut is 18.134 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Groton, Connecticut is 0.12 ppb.

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

The current ozone (O3) concentration at Groton, Connecticut is 33.975 ppm.

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

The current nitrogen dioxide (NO2) concentration at Groton, Connecticut is 7.862 ppb.

Groton, Connecticut live air quality index now

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

Stay updated with real-time air quality in Groton, 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

Groton, Connecticut

Last updated: ... (Local time)

Major air pollutants in Groton, Connecticut

Good

Fine

Moderate

Poor

Very poor

Hazardous

Particulate Matter_2.5 (PM_2.5)

9.99 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

17.14 μg/m³

155

255

425

605+

Ozone (O₃)

51.98 ppb

201

201+

Sulfur Dioxide (SO₂)

0.27 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

6.67 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.24 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

Low

Groton, Connecticut

Get Live Pollen Counts

Groton, Connecticut

Scroll To Air Quality Map

Track live Groton, Connecticut air quality forecast and history

Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-28T20:00:00.000Z	60 \| moderate	14.3 \| fine	21 \| good	42 \| good	0.186 \| good	10.969 \| good	0.264 \| good
2025-07-28T21:00:00.000Z	60 \| moderate	14.3 \| fine	21 \| good	45 \| good	0.189 \| good	5.658 \| good	0.288 \| good
2025-07-28T22:00:00.000Z	66 \| moderate	16.8 \| fine	24 \| good	49 \| good	0.192 \| good	5.538 \| good	0.286 \| good
2025-07-28T23:00:00.000Z	69 \| moderate	18.6 \| fine	25 \| good	51 \| good	0.194 \| good	3.377 \| good	0.296 \| good
2025-07-29T00:00:00.000Z	69 \| moderate	19.3 \| fine	25 \| good	45 \| good	0.271 \| good	2.867 \| good	0.299 \| good
2025-07-29T01:00:00.000Z	69 \| moderate	19.3 \| fine	25 \| good	47 \| good	0.178 \| good	4.493 \| good	0.304 \| good
2025-07-29T02:00:00.000Z	71 \| moderate	19.8 \| fine	26 \| good	43 \| good	0.264 \| good	5.897 \| good	0.323 \| good
2025-07-29T03:00:00.000Z	71 \| moderate	19.6 \| fine	25 \| good	42 \| good	0.25 \| good	7.549 \| good	0.367 \| good
2025-07-29T04:00:00.000Z	71 \| moderate	19.5 \| fine	25 \| good	42 \| good	0.244 \| good	6.412 \| good	0.357 \| good
2025-07-29T05:00:00.000Z	71 \| moderate	19.5 \| fine	25 \| good	41 \| good	0.78 \| good	7.54 \| good	0.298 \| good
2025-07-29T06:00:00.000Z	69 \| moderate	19 \| fine	25 \| good	36 \| good	0.777 \| good	6.913 \| good	0.311 \| good
2025-07-29T07:00:00.000Z	69 \| moderate	19 \| fine	25 \| good	35 \| good	0.306 \| good	6.467 \| good	0.325 \| good
2025-07-29T08:00:00.000Z	69 \| moderate	19.2 \| fine	25 \| good	33 \| good	0.261 \| good	5.953 \| good	0.325 \| good
2025-07-29T09:00:00.000Z	69 \| moderate	18.9 \| fine	25 \| good	32 \| good	0.159 \| good	8.382 \| good	0.345 \| good
2025-07-29T10:00:00.000Z	69 \| moderate	18.9 \| fine	25 \| good	32 \| good	0.139 \| good	11.164 \| good	0.38 \| good
2025-07-29T11:00:00.000Z	69 \| moderate	18.9 \| fine	25 \| good	30 \| good	0.176 \| good	11.604 \| good	0.404 \| good
2025-07-29T12:00:00.000Z	66 \| moderate	17.4 \| fine	22 \| good	29 \| good	0.215 \| good	11.346 \| good	0.513 \| good
2025-07-29T13:00:00.000Z	62 \| moderate	15.3 \| fine	19 \| good	31 \| good	0.217 \| good	12.141 \| good	0.491 \| good
2025-07-29T14:00:00.000Z	56 \| moderate	12.2 \| fine	18 \| good	34 \| good	0.258 \| good	14.27 \| good	0.421 \| good
2025-07-29T15:00:00.000Z	56 \| moderate	12 \| good	18 \| good	42 \| good	0.5 \| good	25.978 \| good	0.388 \| good
2025-07-29T16:00:00.000Z	56 \| moderate	12.3 \| fine	18 \| good	49 \| good	0.441 \| good	20.504 \| good	0.344 \| good
2025-07-29T17:00:00.000Z	58 \| moderate	13 \| fine	20 \| good	50 \| good	0.308 \| good	16.017 \| good	0.344 \| good
2025-07-29T18:00:00.000Z	64 \| moderate	13.9 \| fine	22 \| good	59 \| fine	0.264 \| good	10.014 \| good	0.414 \| good
2025-07-29T19:00:00.000Z	100 \| moderate	13.9 \| fine	22 \| good	70 \| fine	0.284 \| good	9.782 \| good	0.315 \| good
2025-07-29T20:00:00.000Z	126 \| sensitive	14 \| fine	22 \| good	78 \| moderate	0.379 \| good	19.936 \| good	0.312 \| good
2025-07-29T21:00:00.000Z	126 \| sensitive	13.2 \| fine	21 \| good	78 \| moderate	0.428 \| good	17.699 \| good	0.288 \| good
2025-07-29T22:00:00.000Z	90 \| moderate	13.2 \| fine	21 \| good	67 \| fine	0.367 \| good	4.687 \| good	0.288 \| good
2025-07-29T23:00:00.000Z	122 \| sensitive	13.1 \| fine	21 \| good	77 \| moderate	0.405 \| good	4.152 \| good	0.288 \| good
2025-07-30T00:00:00.000Z	112 \| sensitive	13.1 \| fine	22 \| good	74 \| moderate	0.42 \| good	5.995 \| good	0.316 \| good
2025-07-30T01:00:00.000Z	87 \| moderate	12.9 \| fine	21 \| good	66 \| fine	0.4 \| good	5.653 \| good	0.269 \| good
2025-07-30T02:00:00.000Z	80 \| moderate	12.6 \| fine	21 \| good	64 \| fine	0.178 \| good	7.868 \| good	0.338 \| good
2025-07-30T03:00:00.000Z	77 \| moderate	23.495 \| fine	103 \| fine	46.007 \| good	0.712 \| good	6.328 \| good	0.284 \| good
2025-07-30T04:00:00.000Z	56 \| moderate	12.1 \| fine	19 \| good	54 \| good	0.259 \| good	10.495 \| good	0.324 \| good
2025-07-30T05:00:00.000Z	56 \| moderate	12.1 \| fine	18 \| good	54 \| good	0.454 \| good	14.488 \| good	0.313 \| good
2025-07-30T06:00:00.000Z	58 \| moderate	12.2 \| fine	19 \| good	57 \| fine	0.379 \| good	18.462 \| good	0.268 \| good
2025-07-30T07:00:00.000Z	58 \| moderate	12.3 \| fine	19 \| good	57 \| fine	0.218 \| good	14.156 \| good	0.246 \| good
2025-07-30T08:00:00.000Z	58 \| moderate	12.5 \| fine	19 \| good	52 \| good	0.301 \| good	14.942 \| good	0.246 \| good
2025-07-30T09:00:00.000Z	58 \| moderate	12.6 \| fine	18 \| good	43 \| good	0.294 \| good	13.421 \| good	0.243 \| good
2025-07-30T10:00:00.000Z	58 \| moderate	12.6 \| fine	18 \| good	37 \| good	0.199 \| good	11.388 \| good	0.317 \| good
2025-07-30T11:00:00.000Z	58 \| moderate	12.7 \| fine	18 \| good	30 \| good	0.177 \| good	19.279 \| good	0.344 \| good
2025-07-30T12:00:00.000Z	58 \| moderate	12.7 \| fine	18 \| good	28 \| good	0.195 \| good	14.135 \| good	0.33 \| good
2025-07-30T13:00:00.000Z	56 \| moderate	12.3 \| fine	18 \| good	30 \| good	0.214 \| good	9.154 \| good	0.284 \| good
2025-07-30T14:00:00.000Z	54 \| moderate	10.9 \| good	18 \| good	34 \| good	0.119 \| good	7.865 \| good	0.261 \| good
2025-07-30T15:00:00.000Z	54 \| moderate	10.7 \| good	18 \| good	34 \| good	0.202 \| good	8.67 \| good	0.303 \| good
2025-07-30T16:00:00.000Z	54 \| moderate	10.6 \| good	18 \| good	42 \| good	0.279 \| good	10.279 \| good	0.483 \| good
2025-07-30T17:00:00.000Z	54 \| moderate	10.8 \| good	18 \| good	47 \| good	0.276 \| good	8.563 \| good	0.265 \| good
2025-07-30T18:00:00.000Z	52 \| moderate	10.4 \| good	17 \| good	49 \| good	0.261 \| good	7.809 \| good	0.238 \| good
2025-07-30T19:00:00.000Z	52 \| moderate	10 \| good	17 \| good	52 \| good	0.27 \| good	6.675 \| good	0.243 \| good
2025-07-30T19:00:00.000Z	52 \| moderate	9.989 \| good	17.137 \| good	51.978 \| good	0.27 \| good	6.669 \| good	0.243 \| good
2025-07-30T16:00:00.000Z	60 \| moderate	13.623 \| fine	61.144 \| fine	53.741 \| good	0.707 \| good	3.537 \| good	0.312 \| good
2025-07-30T17:00:00.000Z	71 \| moderate	14.542 \| fine	64.746 \| fine	61.144 \| fine	0.682 \| good	2.801 \| good	0.305 \| good
2025-07-30T18:00:00.000Z	77 \| moderate	13.365 \| fine	60.244 \| fine	62.563 \| fine	0.656 \| good	2.066 \| good	0.299 \| good
2025-07-30T19:00:00.000Z	58 \| moderate	13.27 \| fine	59.887 \| fine	53.905 \| good	0.821 \| good	2.259 \| good	0.285 \| good
2025-07-30T20:00:00.000Z	64 \| moderate	15.563 \| fine	69.887 \| fine	50.999 \| good	0.987 \| good	2.451 \| good	0.272 \| good
2025-07-30T21:00:00.000Z	105 \| sensitive	20.174 \| fine	88.734 \| fine	71.904 \| moderate	1.152 \| good	2.643 \| good	0.259 \| good
2025-07-30T22:00:00.000Z	147 \| sensitive	25.844 \| fine	112.356 \| fine	84.025 \| moderate	1.127 \| good	3.958 \| good	0.261 \| good
2025-07-30T23:00:00.000Z	126 \| sensitive	24.117 \| fine	105.223 \| fine	78.498 \| moderate	1.101 \| good	5.273 \| good	0.262 \| good
2025-07-31T00:00:00.000Z	81 \| moderate	25.397 \| fine	110.837 \| fine	60.681 \| fine	1.075 \| good	6.588 \| good	0.263 \| good
2025-07-31T01:00:00.000Z	77 \| moderate	22.572 \| fine	98.393 \| fine	52.919 \| good	1.038 \| good	6.534 \| good	0.257 \| good
2025-07-31T02:00:00.000Z	77 \| moderate	22.576 \| fine	99.02 \| fine	47.603 \| good	1 \| good	6.479 \| good	0.252 \| good
2025-07-31T03:00:00.000Z	77 \| moderate	22.98 \| fine	99.984 \| fine	48.373 \| good	0.962 \| good	6.424 \| good	0.246 \| good
2025-07-31T04:00:00.000Z	73 \| moderate	21.26 \| fine	93.449 \| fine	44.734 \| good	0.914 \| good	6.13 \| good	0.241 \| good
2025-07-31T05:00:00.000Z	71 \| moderate	20.238 \| fine	88.694 \| fine	39.036 \| good	0.865 \| good	5.837 \| good	0.236 \| good
2025-07-31T06:00:00.000Z	69 \| moderate	18.845 \| fine	83.028 \| fine	29.881 \| good	0.816 \| good	5.543 \| good	0.232 \| good
2025-07-31T07:00:00.000Z	69 \| moderate	19.043 \| fine	84.032 \| fine	26.579 \| good	0.732 \| good	4.911 \| good	0.23 \| good
2025-07-31T08:00:00.000Z	66 \| moderate	17.404 \| fine	76.897 \| fine	24.885 \| good	0.649 \| good	4.278 \| good	0.229 \| good
2025-07-31T09:00:00.000Z	73 \| moderate	20.563 \| fine	90.275 \| fine	23.267 \| good	0.565 \| good	3.646 \| good	0.227 \| good
2025-07-31T10:00:00.000Z	67 \| moderate	18.443 \| fine	81.072 \| fine	22.52 \| good	0.551 \| good	3.576 \| good	0.232 \| good
2025-07-31T11:00:00.000Z	67 \| moderate	18.347 \| fine	81 \| fine	22.348 \| good	0.536 \| good	3.507 \| good	0.237 \| good
2025-07-31T12:00:00.000Z	75 \| moderate	21.637 \| fine	94.891 \| fine	25.548 \| good	0.521 \| good	3.437 \| good	0.242 \| good
2025-07-31T13:00:00.000Z	75 \| moderate	22.392 \| fine	98.017 \| fine	37.398 \| good	0.498 \| good	3.008 \| good	0.245 \| good
2025-07-31T14:00:00.000Z	73 \| moderate	21.271 \| fine	93.842 \| fine	46.923 \| good	0.474 \| good	2.579 \| good	0.247 \| good
2025-07-31T15:00:00.000Z	73 \| moderate	20.608 \| fine	90.729 \| fine	50.442 \| good	0.451 \| good	2.15 \| good	0.249 \| good
2025-07-31T16:00:00.000Z	73 \| moderate	20.63 \| fine	90.801 \| fine	51.635 \| good	0.424 \| good	2.114 \| good	0.243 \| good
2025-07-31T17:00:00.000Z	71 \| moderate	20.471 \| fine	90.396 \| fine	53.564 \| good	0.398 \| good	2.079 \| good	0.238 \| good
2025-07-31T18:00:00.000Z	71 \| moderate	19.584 \| fine	86.339 \| fine	57.007 \| fine	0.372 \| good	2.044 \| good	0.232 \| good
2025-07-31T19:00:00.000Z	69 \| moderate	18.647 \| fine	82.507 \| fine	49.343 \| good	0.373 \| good	2.273 \| good	0.233 \| good
2025-07-31T20:00:00.000Z	71 \| moderate	20.015 \| fine	88.427 \| fine	46.101 \| good	0.374 \| good	2.502 \| good	0.233 \| good
2025-07-31T21:00:00.000Z	66 \| moderate	16.614 \| fine	73.61 \| fine	46.405 \| good	0.375 \| good	2.731 \| good	0.234 \| good
2025-07-31T22:00:00.000Z	62 \| moderate	14.747 \| fine	65.446 \| fine	38.235 \| good	0.363 \| good	3.274 \| good	0.242 \| good
2025-07-31T23:00:00.000Z	60 \| moderate	14.072 \| fine	62.988 \| fine	26.755 \| good	0.351 \| good	3.818 \| good	0.249 \| good
2025-08-01T00:00:00.000Z	67 \| moderate	18.315 \| fine	80.859 \| fine	25.365 \| good	0.339 \| good	4.361 \| good	0.257 \| good
2025-08-01T01:00:00.000Z	71 \| moderate	19.695 \| fine	86.749 \| fine	24.106 \| good	0.358 \| good	4.059 \| good	0.257 \| good
2025-08-01T02:00:00.000Z	69 \| moderate	19.444 \| fine	85.521 \| fine	25.284 \| good	0.377 \| good	3.756 \| good	0.258 \| good
2025-08-01T03:00:00.000Z	71 \| moderate	20.075 \| fine	88.047 \| fine	23.946 \| good	0.396 \| good	3.453 \| good	0.258 \| good
2025-08-01T04:00:00.000Z	69 \| moderate	18.924 \| fine	83.635 \| fine	24.902 \| good	0.418 \| good	3.533 \| good	0.255 \| good
2025-08-01T05:00:00.000Z	67 \| moderate	17.681 \| fine	77.976 \| fine	24.47 \| good	0.441 \| good	3.614 \| good	0.252 \| good
2025-08-01T06:00:00.000Z	66 \| moderate	16.509 \| fine	73.27 \| fine	21.993 \| good	0.463 \| good	3.694 \| good	0.249 \| good
2025-08-01T07:00:00.000Z	62 \| moderate	15.379 \| fine	68.678 \| fine	22.63 \| good	0.514 \| good	3.871 \| good	0.248 \| good
2025-08-01T08:00:00.000Z	60 \| moderate	14.281 \| fine	63.903 \| fine	24.183 \| good	0.566 \| good	4.048 \| good	0.246 \| good
2025-08-01T09:00:00.000Z	60 \| moderate	13.521 \| fine	60.857 \| fine	23.256 \| good	0.618 \| good	4.225 \| good	0.244 \| good
2025-08-01T10:00:00.000Z	58 \| moderate	13.326 \| fine	60.574 \| fine	24.72 \| good	0.618 \| good	3.899 \| good	0.241 \| good
2025-08-01T11:00:00.000Z	60 \| moderate	13.925 \| fine	62.554 \| fine	25.729 \| good	0.617 \| good	3.574 \| good	0.237 \| good
2025-08-01T12:00:00.000Z	56 \| moderate	12.388 \| fine	55.86 \| fine	26.271 \| good	0.617 \| good	3.248 \| good	0.233 \| good
2025-08-01T13:00:00.000Z	52 \| moderate	10.229 \| good	45.15 \| good	31.134 \| good	0.534 \| good	3.141 \| good	0.227 \| good
2025-08-01T14:00:00.000Z	44 \| good	8.439 \| good	36.873 \| good	35.32 \| good	0.451 \| good	3.035 \| good	0.221 \| good
2025-08-01T15:00:00.000Z	49 \| good	8.531 \| good	37.349 \| good	36.157 \| good	0.367 \| good	2.928 \| good	0.216 \| good

Groton

Get reliable air quality data to drive your business

Groton, Connecticut air quality map: Track AQI near you

0.26ppm

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 Groton, Connecticut updated?

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

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

The worst air quality in Groton, Connecticut in the last 24 hours was observed at 09:00:00 on 2025-07-29.

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

In the last 24 hrs, the best air quality in Groton, Connecticut was observed at 02:00:00 on 2025-07-30.

What is the current air quality in Groton, Connecticut?

The current air quality in Groton, Connecticut is 54, categorized as Moderate based on real-time data.

What pollutant is the most common in Groton, Connecticut?

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

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

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

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

The current PM_2.5 concentration at Groton, Connecticut is 10.887 μg/m³.

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

The current PM₁₀ concentration at Groton, Connecticut is 18.134 μg/m³.

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

The current carbon monoxide (CO) concentration at Groton, Connecticut is 0.261 ppm.

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

The current sulfur dioxide (SO₂) concentration at Groton, Connecticut is 0.12 ppb.

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

The current ozone (O₃) concentration at Groton, Connecticut is 33.975 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Groton, Connecticut is 7.862 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2025-07-28T20:00:00.000Z	60 \| moderate	14.3 \| fine	21 \| good	42 \| good	0.186 \| good	10.969 \| good	0.264 \| good
2025-07-28T21:00:00.000Z	60 \| moderate	14.3 \| fine	21 \| good	45 \| good	0.189 \| good	5.658 \| good	0.288 \| good
2025-07-28T22:00:00.000Z	66 \| moderate	16.8 \| fine	24 \| good	49 \| good	0.192 \| good	5.538 \| good	0.286 \| good
2025-07-28T23:00:00.000Z	69 \| moderate	18.6 \| fine	25 \| good	51 \| good	0.194 \| good	3.377 \| good	0.296 \| good
2025-07-29T00:00:00.000Z	69 \| moderate	19.3 \| fine	25 \| good	45 \| good	0.271 \| good	2.867 \| good	0.299 \| good
2025-07-29T01:00:00.000Z	69 \| moderate	19.3 \| fine	25 \| good	47 \| good	0.178 \| good	4.493 \| good	0.304 \| good
2025-07-29T02:00:00.000Z	71 \| moderate	19.8 \| fine	26 \| good	43 \| good	0.264 \| good	5.897 \| good	0.323 \| good
2025-07-29T03:00:00.000Z	71 \| moderate	19.6 \| fine	25 \| good	42 \| good	0.25 \| good	7.549 \| good	0.367 \| good
2025-07-29T04:00:00.000Z	71 \| moderate	19.5 \| fine	25 \| good	42 \| good	0.244 \| good	6.412 \| good	0.357 \| good
2025-07-29T05:00:00.000Z	71 \| moderate	19.5 \| fine	25 \| good	41 \| good	0.78 \| good	7.54 \| good	0.298 \| good
2025-07-29T06:00:00.000Z	69 \| moderate	19 \| fine	25 \| good	36 \| good	0.777 \| good	6.913 \| good	0.311 \| good
2025-07-29T07:00:00.000Z	69 \| moderate	19 \| fine	25 \| good	35 \| good	0.306 \| good	6.467 \| good	0.325 \| good
2025-07-29T08:00:00.000Z	69 \| moderate	19.2 \| fine	25 \| good	33 \| good	0.261 \| good	5.953 \| good	0.325 \| good
2025-07-29T09:00:00.000Z	69 \| moderate	18.9 \| fine	25 \| good	32 \| good	0.159 \| good	8.382 \| good	0.345 \| good
2025-07-29T10:00:00.000Z	69 \| moderate	18.9 \| fine	25 \| good	32 \| good	0.139 \| good	11.164 \| good	0.38 \| good
2025-07-29T11:00:00.000Z	69 \| moderate	18.9 \| fine	25 \| good	30 \| good	0.176 \| good	11.604 \| good	0.404 \| good
2025-07-29T12:00:00.000Z	66 \| moderate	17.4 \| fine	22 \| good	29 \| good	0.215 \| good	11.346 \| good	0.513 \| good
2025-07-29T13:00:00.000Z	62 \| moderate	15.3 \| fine	19 \| good	31 \| good	0.217 \| good	12.141 \| good	0.491 \| good
2025-07-29T14:00:00.000Z	56 \| moderate	12.2 \| fine	18 \| good	34 \| good	0.258 \| good	14.27 \| good	0.421 \| good
2025-07-29T15:00:00.000Z	56 \| moderate	12 \| good	18 \| good	42 \| good	0.5 \| good	25.978 \| good	0.388 \| good
2025-07-29T16:00:00.000Z	56 \| moderate	12.3 \| fine	18 \| good	49 \| good	0.441 \| good	20.504 \| good	0.344 \| good
2025-07-29T17:00:00.000Z	58 \| moderate	13 \| fine	20 \| good	50 \| good	0.308 \| good	16.017 \| good	0.344 \| good
2025-07-29T18:00:00.000Z	64 \| moderate	13.9 \| fine	22 \| good	59 \| fine	0.264 \| good	10.014 \| good	0.414 \| good
2025-07-29T19:00:00.000Z	100 \| moderate	13.9 \| fine	22 \| good	70 \| fine	0.284 \| good	9.782 \| good	0.315 \| good
2025-07-29T20:00:00.000Z	126 \| sensitive	14 \| fine	22 \| good	78 \| moderate	0.379 \| good	19.936 \| good	0.312 \| good
2025-07-29T21:00:00.000Z	126 \| sensitive	13.2 \| fine	21 \| good	78 \| moderate	0.428 \| good	17.699 \| good	0.288 \| good
2025-07-29T22:00:00.000Z	90 \| moderate	13.2 \| fine	21 \| good	67 \| fine	0.367 \| good	4.687 \| good	0.288 \| good
2025-07-29T23:00:00.000Z	122 \| sensitive	13.1 \| fine	21 \| good	77 \| moderate	0.405 \| good	4.152 \| good	0.288 \| good
2025-07-30T00:00:00.000Z	112 \| sensitive	13.1 \| fine	22 \| good	74 \| moderate	0.42 \| good	5.995 \| good	0.316 \| good
2025-07-30T01:00:00.000Z	87 \| moderate	12.9 \| fine	21 \| good	66 \| fine	0.4 \| good	5.653 \| good	0.269 \| good
2025-07-30T02:00:00.000Z	80 \| moderate	12.6 \| fine	21 \| good	64 \| fine	0.178 \| good	7.868 \| good	0.338 \| good
2025-07-30T03:00:00.000Z	77 \| moderate	23.495 \| fine	103 \| fine	46.007 \| good	0.712 \| good	6.328 \| good	0.284 \| good
2025-07-30T04:00:00.000Z	56 \| moderate	12.1 \| fine	19 \| good	54 \| good	0.259 \| good	10.495 \| good	0.324 \| good
2025-07-30T05:00:00.000Z	56 \| moderate	12.1 \| fine	18 \| good	54 \| good	0.454 \| good	14.488 \| good	0.313 \| good
2025-07-30T06:00:00.000Z	58 \| moderate	12.2 \| fine	19 \| good	57 \| fine	0.379 \| good	18.462 \| good	0.268 \| good
2025-07-30T07:00:00.000Z	58 \| moderate	12.3 \| fine	19 \| good	57 \| fine	0.218 \| good	14.156 \| good	0.246 \| good
2025-07-30T08:00:00.000Z	58 \| moderate	12.5 \| fine	19 \| good	52 \| good	0.301 \| good	14.942 \| good	0.246 \| good
2025-07-30T09:00:00.000Z	58 \| moderate	12.6 \| fine	18 \| good	43 \| good	0.294 \| good	13.421 \| good	0.243 \| good
2025-07-30T10:00:00.000Z	58 \| moderate	12.6 \| fine	18 \| good	37 \| good	0.199 \| good	11.388 \| good	0.317 \| good
2025-07-30T11:00:00.000Z	58 \| moderate	12.7 \| fine	18 \| good	30 \| good	0.177 \| good	19.279 \| good	0.344 \| good
2025-07-30T12:00:00.000Z	58 \| moderate	12.7 \| fine	18 \| good	28 \| good	0.195 \| good	14.135 \| good	0.33 \| good
2025-07-30T13:00:00.000Z	56 \| moderate	12.3 \| fine	18 \| good	30 \| good	0.214 \| good	9.154 \| good	0.284 \| good
2025-07-30T14:00:00.000Z	54 \| moderate	10.9 \| good	18 \| good	34 \| good	0.119 \| good	7.865 \| good	0.261 \| good
2025-07-30T15:00:00.000Z	54 \| moderate	10.7 \| good	18 \| good	34 \| good	0.202 \| good	8.67 \| good	0.303 \| good
2025-07-30T16:00:00.000Z	54 \| moderate	10.6 \| good	18 \| good	42 \| good	0.279 \| good	10.279 \| good	0.483 \| good
2025-07-30T17:00:00.000Z	54 \| moderate	10.8 \| good	18 \| good	47 \| good	0.276 \| good	8.563 \| good	0.265 \| good
2025-07-30T18:00:00.000Z	52 \| moderate	10.4 \| good	17 \| good	49 \| good	0.261 \| good	7.809 \| good	0.238 \| good
2025-07-30T19:00:00.000Z	52 \| moderate	10 \| good	17 \| good	52 \| good	0.27 \| good	6.675 \| good	0.243 \| good
2025-07-30T19:00:00.000Z	52 \| moderate	9.989 \| good	17.137 \| good	51.978 \| good	0.27 \| good	6.669 \| good	0.243 \| good
2025-07-30T16:00:00.000Z	60 \| moderate	13.623 \| fine	61.144 \| fine	53.741 \| good	0.707 \| good	3.537 \| good	0.312 \| good
2025-07-30T17:00:00.000Z	71 \| moderate	14.542 \| fine	64.746 \| fine	61.144 \| fine	0.682 \| good	2.801 \| good	0.305 \| good
2025-07-30T18:00:00.000Z	77 \| moderate	13.365 \| fine	60.244 \| fine	62.563 \| fine	0.656 \| good	2.066 \| good	0.299 \| good
2025-07-30T19:00:00.000Z	58 \| moderate	13.27 \| fine	59.887 \| fine	53.905 \| good	0.821 \| good	2.259 \| good	0.285 \| good
2025-07-30T20:00:00.000Z	64 \| moderate	15.563 \| fine	69.887 \| fine	50.999 \| good	0.987 \| good	2.451 \| good	0.272 \| good
2025-07-30T21:00:00.000Z	105 \| sensitive	20.174 \| fine	88.734 \| fine	71.904 \| moderate	1.152 \| good	2.643 \| good	0.259 \| good
2025-07-30T22:00:00.000Z	147 \| sensitive	25.844 \| fine	112.356 \| fine	84.025 \| moderate	1.127 \| good	3.958 \| good	0.261 \| good
2025-07-30T23:00:00.000Z	126 \| sensitive	24.117 \| fine	105.223 \| fine	78.498 \| moderate	1.101 \| good	5.273 \| good	0.262 \| good
2025-07-31T00:00:00.000Z	81 \| moderate	25.397 \| fine	110.837 \| fine	60.681 \| fine	1.075 \| good	6.588 \| good	0.263 \| good
2025-07-31T01:00:00.000Z	77 \| moderate	22.572 \| fine	98.393 \| fine	52.919 \| good	1.038 \| good	6.534 \| good	0.257 \| good
2025-07-31T02:00:00.000Z	77 \| moderate	22.576 \| fine	99.02 \| fine	47.603 \| good	1 \| good	6.479 \| good	0.252 \| good
2025-07-31T03:00:00.000Z	77 \| moderate	22.98 \| fine	99.984 \| fine	48.373 \| good	0.962 \| good	6.424 \| good	0.246 \| good
2025-07-31T04:00:00.000Z	73 \| moderate	21.26 \| fine	93.449 \| fine	44.734 \| good	0.914 \| good	6.13 \| good	0.241 \| good
2025-07-31T05:00:00.000Z	71 \| moderate	20.238 \| fine	88.694 \| fine	39.036 \| good	0.865 \| good	5.837 \| good	0.236 \| good
2025-07-31T06:00:00.000Z	69 \| moderate	18.845 \| fine	83.028 \| fine	29.881 \| good	0.816 \| good	5.543 \| good	0.232 \| good
2025-07-31T07:00:00.000Z	69 \| moderate	19.043 \| fine	84.032 \| fine	26.579 \| good	0.732 \| good	4.911 \| good	0.23 \| good
2025-07-31T08:00:00.000Z	66 \| moderate	17.404 \| fine	76.897 \| fine	24.885 \| good	0.649 \| good	4.278 \| good	0.229 \| good
2025-07-31T09:00:00.000Z	73 \| moderate	20.563 \| fine	90.275 \| fine	23.267 \| good	0.565 \| good	3.646 \| good	0.227 \| good
2025-07-31T10:00:00.000Z	67 \| moderate	18.443 \| fine	81.072 \| fine	22.52 \| good	0.551 \| good	3.576 \| good	0.232 \| good
2025-07-31T11:00:00.000Z	67 \| moderate	18.347 \| fine	81 \| fine	22.348 \| good	0.536 \| good	3.507 \| good	0.237 \| good
2025-07-31T12:00:00.000Z	75 \| moderate	21.637 \| fine	94.891 \| fine	25.548 \| good	0.521 \| good	3.437 \| good	0.242 \| good
2025-07-31T13:00:00.000Z	75 \| moderate	22.392 \| fine	98.017 \| fine	37.398 \| good	0.498 \| good	3.008 \| good	0.245 \| good
2025-07-31T14:00:00.000Z	73 \| moderate	21.271 \| fine	93.842 \| fine	46.923 \| good	0.474 \| good	2.579 \| good	0.247 \| good
2025-07-31T15:00:00.000Z	73 \| moderate	20.608 \| fine	90.729 \| fine	50.442 \| good	0.451 \| good	2.15 \| good	0.249 \| good
2025-07-31T16:00:00.000Z	73 \| moderate	20.63 \| fine	90.801 \| fine	51.635 \| good	0.424 \| good	2.114 \| good	0.243 \| good
2025-07-31T17:00:00.000Z	71 \| moderate	20.471 \| fine	90.396 \| fine	53.564 \| good	0.398 \| good	2.079 \| good	0.238 \| good
2025-07-31T18:00:00.000Z	71 \| moderate	19.584 \| fine	86.339 \| fine	57.007 \| fine	0.372 \| good	2.044 \| good	0.232 \| good
2025-07-31T19:00:00.000Z	69 \| moderate	18.647 \| fine	82.507 \| fine	49.343 \| good	0.373 \| good	2.273 \| good	0.233 \| good
2025-07-31T20:00:00.000Z	71 \| moderate	20.015 \| fine	88.427 \| fine	46.101 \| good	0.374 \| good	2.502 \| good	0.233 \| good
2025-07-31T21:00:00.000Z	66 \| moderate	16.614 \| fine	73.61 \| fine	46.405 \| good	0.375 \| good	2.731 \| good	0.234 \| good
2025-07-31T22:00:00.000Z	62 \| moderate	14.747 \| fine	65.446 \| fine	38.235 \| good	0.363 \| good	3.274 \| good	0.242 \| good
2025-07-31T23:00:00.000Z	60 \| moderate	14.072 \| fine	62.988 \| fine	26.755 \| good	0.351 \| good	3.818 \| good	0.249 \| good
2025-08-01T00:00:00.000Z	67 \| moderate	18.315 \| fine	80.859 \| fine	25.365 \| good	0.339 \| good	4.361 \| good	0.257 \| good
2025-08-01T01:00:00.000Z	71 \| moderate	19.695 \| fine	86.749 \| fine	24.106 \| good	0.358 \| good	4.059 \| good	0.257 \| good
2025-08-01T02:00:00.000Z	69 \| moderate	19.444 \| fine	85.521 \| fine	25.284 \| good	0.377 \| good	3.756 \| good	0.258 \| good
2025-08-01T03:00:00.000Z	71 \| moderate	20.075 \| fine	88.047 \| fine	23.946 \| good	0.396 \| good	3.453 \| good	0.258 \| good
2025-08-01T04:00:00.000Z	69 \| moderate	18.924 \| fine	83.635 \| fine	24.902 \| good	0.418 \| good	3.533 \| good	0.255 \| good
2025-08-01T05:00:00.000Z	67 \| moderate	17.681 \| fine	77.976 \| fine	24.47 \| good	0.441 \| good	3.614 \| good	0.252 \| good
2025-08-01T06:00:00.000Z	66 \| moderate	16.509 \| fine	73.27 \| fine	21.993 \| good	0.463 \| good	3.694 \| good	0.249 \| good
2025-08-01T07:00:00.000Z	62 \| moderate	15.379 \| fine	68.678 \| fine	22.63 \| good	0.514 \| good	3.871 \| good	0.248 \| good
2025-08-01T08:00:00.000Z	60 \| moderate	14.281 \| fine	63.903 \| fine	24.183 \| good	0.566 \| good	4.048 \| good	0.246 \| good
2025-08-01T09:00:00.000Z	60 \| moderate	13.521 \| fine	60.857 \| fine	23.256 \| good	0.618 \| good	4.225 \| good	0.244 \| good
2025-08-01T10:00:00.000Z	58 \| moderate	13.326 \| fine	60.574 \| fine	24.72 \| good	0.618 \| good	3.899 \| good	0.241 \| good
2025-08-01T11:00:00.000Z	60 \| moderate	13.925 \| fine	62.554 \| fine	25.729 \| good	0.617 \| good	3.574 \| good	0.237 \| good
2025-08-01T12:00:00.000Z	56 \| moderate	12.388 \| fine	55.86 \| fine	26.271 \| good	0.617 \| good	3.248 \| good	0.233 \| good
2025-08-01T13:00:00.000Z	52 \| moderate	10.229 \| good	45.15 \| good	31.134 \| good	0.534 \| good	3.141 \| good	0.227 \| good
2025-08-01T14:00:00.000Z	44 \| good	8.439 \| good	36.873 \| good	35.32 \| good	0.451 \| good	3.035 \| good	0.221 \| good
2025-08-01T15:00:00.000Z	49 \| good	8.531 \| good	37.349 \| good	36.157 \| good	0.367 \| good	2.928 \| good	0.216 \| good

Groton, Connecticut live air quality index now

Major air pollutants in Groton, Connecticut

Particulate Matter2.5 (PM2.5)

Particulate Matter10 (PM10)

Ozone (O3)

Sulfur Dioxide (SO2)

Nitrogen Dioxide (NO2)

Carbon Monoxide (CO)

Track live Groton, Connecticut air quality forecast and history

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Groton, Connecticut air quality map: Track AQI near you

Air quality in nearby cities

New London, Connecticut

Waterford, Connecticut

Ledyard, Connecticut

East Lyme, Connecticut

Montville, Connecticut

Stonington, Connecticut

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Frequently asked questions

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

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

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

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

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

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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 Groton, Connecticut?

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