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

The current PM10 concentration at Groton, Connecticut is 16.108 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Groton, Connecticut is 0.278 ppb.

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

The current ozone (O3) concentration at Groton, Connecticut is 39.987 ppm.

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

The current nitrogen dioxide (NO2) concentration at Groton, Connecticut is 7.579 ppb.

Groton, Connecticut live air quality index now

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

The current PM2.5 concentration at Groton, Connecticut is 10.883 μg/m3.

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)

10.59 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

15.14 μg/m³

155

255

425

605+

Ozone (O₃)

44.97 ppb

201

201+

Sulfur Dioxide (SO₂)

0.24 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

7.48 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.18 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
2026-06-27T21:00:00.000Z	54 \| moderate	11.2 \| good	17 \| good	56 \| fine	0.198 \| good	4.878 \| good	0.201 \| good
2026-06-27T22:00:00.000Z	54 \| moderate	11.4 \| good	17 \| good	54 \| good	0.253 \| good	4.151 \| good	0.224 \| good
2026-06-27T23:00:00.000Z	54 \| moderate	11.3 \| good	17 \| good	53 \| good	0.251 \| good	5.866 \| good	0.222 \| good
2026-06-28T00:00:00.000Z	56 \| moderate	11.5 \| good	17 \| good	53 \| good	0.212 \| good	6.338 \| good	0.264 \| good
2026-06-28T01:00:00.000Z	56 \| moderate	11.5 \| good	17 \| good	53 \| good	0.234 \| good	4.073 \| good	0.239 \| good
2026-06-28T02:00:00.000Z	56 \| moderate	11.5 \| good	17 \| good	47 \| good	0.16 \| good	4.323 \| good	0.261 \| good
2026-06-28T03:00:00.000Z	58 \| moderate	13.05 \| fine	59 \| fine	49.326 \| good	0.348 \| good	5.653 \| good	0.221 \| good
2026-06-28T04:00:00.000Z	58 \| moderate	12.5 \| fine	18 \| good	31 \| good	0.16 \| good	6.267 \| good	0.303 \| good
2026-06-28T05:00:00.000Z	56 \| moderate	12.3 \| fine	17 \| good	32 \| good	0.157 \| good	9.28 \| good	0.323 \| good
2026-06-28T06:00:00.000Z	56 \| moderate	11.7 \| good	17 \| good	31 \| good	0.157 \| good	7.741 \| good	0.318 \| good
2026-06-28T07:00:00.000Z	56 \| moderate	11.7 \| good	17 \| good	31 \| good	0.368 \| good	3.884 \| good	0.271 \| good
2026-06-28T08:00:00.000Z	56 \| moderate	11.7 \| good	16 \| good	28 \| good	0.175 \| good	6.692 \| good	0.279 \| good
2026-06-28T09:00:00.000Z	56 \| moderate	11.7 \| good	16 \| good	28 \| good	0.325 \| good	8.289 \| good	0.259 \| good
2026-06-28T10:00:00.000Z	56 \| moderate	11.6 \| good	16 \| good	31 \| good	0.175 \| good	5.948 \| good	0.261 \| good
2026-06-28T11:00:00.000Z	54 \| moderate	11.4 \| good	15 \| good	31 \| good	0.318 \| good	9.018 \| good	0.302 \| good
2026-06-28T12:00:00.000Z	54 \| moderate	11.1 \| good	15 \| good	30 \| good	0.468 \| good	4.944 \| good	0.241 \| good
2026-06-28T13:00:00.000Z	54 \| moderate	11.1 \| good	15 \| good	30 \| good	0.468 \| good	5.569 \| good	0.21 \| good
2026-06-28T14:00:00.000Z	54 \| moderate	10.7 \| good	14 \| good	31 \| good	0.214 \| good	3.055 \| good	0.187 \| good
2026-06-28T15:00:00.000Z	54 \| moderate	10.5 \| good	14 \| good	33 \| good	0.197 \| good	3.388 \| good	0.164 \| good
2026-06-28T16:00:00.000Z	52 \| moderate	10.1 \| good	14 \| good	34 \| good	0.26 \| good	3.771 \| good	0.185 \| good
2026-06-28T17:00:00.000Z	52 \| moderate	9.6 \| good	13 \| good	39 \| good	0.182 \| good	4.588 \| good	0.186 \| good
2026-06-28T18:00:00.000Z	49 \| good	9.2 \| good	13 \| good	42 \| good	0.182 \| good	4.129 \| good	0.187 \| good
2026-06-28T19:00:00.000Z	49 \| good	8.8 \| good	13 \| good	47 \| good	0.216 \| good	3.06 \| good	0.208 \| good
2026-06-28T20:00:00.000Z	49 \| good	8.6 \| good	13 \| good	51 \| good	0.217 \| good	2.983 \| good	0.187 \| good
2026-06-28T21:00:00.000Z	49 \| good	8.2 \| good	13 \| good	53 \| good	0.254 \| good	4.201 \| good	0.187 \| good
2026-06-28T22:00:00.000Z	51 \| moderate	7.6 \| good	12 \| good	55 \| fine	0.235 \| good	4.681 \| good	0.21 \| good
2026-06-28T23:00:00.000Z	51 \| moderate	7.1 \| good	12 \| good	55 \| fine	0.232 \| good	5.505 \| good	0.187 \| good
2026-06-29T00:00:00.000Z	48 \| good	7 \| good	12 \| good	52 \| good	0.232 \| good	5.735 \| good	0.3 \| good
2026-06-29T01:00:00.000Z	46 \| good	6.7 \| good	11 \| good	50 \| good	0.138 \| good	5.224 \| good	0.209 \| good
2026-06-29T02:00:00.000Z	49 \| good	6.3 \| good	10 \| good	53 \| good	0.16 \| good	5.146 \| good	0.209 \| good
2026-06-29T03:00:00.000Z	52 \| moderate	9.935 \| good	44.582 \| good	28.863 \| good	0.258 \| good	2.323 \| good	0.17 \| good
2026-06-29T04:00:00.000Z	43 \| good	5.7 \| good	8 \| good	46 \| good	0.359 \| good	5.761 \| good	0.255 \| good
2026-06-29T05:00:00.000Z	43 \| good	5.7 \| good	8 \| good	46 \| good	0.281 \| good	7.46 \| good	0.201 \| good
2026-06-29T06:00:00.000Z	41 \| good	6 \| good	8 \| good	44 \| good	0.175 \| good	8.803 \| good	0.199 \| good
2026-06-29T07:00:00.000Z	39 \| good	6 \| good	8 \| good	42 \| good	0.325 \| good	8.6 \| good	0.227 \| good
2026-06-29T08:00:00.000Z	34 \| good	6.2 \| good	9 \| good	37 \| good	0.175 \| good	9.68 \| good	0.199 \| good
2026-06-29T09:00:00.000Z	33 \| good	6.1 \| good	8 \| good	35 \| good	0.175 \| good	10.316 \| good	0.222 \| good
2026-06-29T10:00:00.000Z	33 \| good	6.3 \| good	9 \| good	30 \| good	0.194 \| good	14.253 \| good	0.371 \| good
2026-06-29T11:00:00.000Z	38 \| good	6.5 \| good	10 \| good	24 \| good	0.176 \| good	10.077 \| good	0.371 \| good
2026-06-29T12:00:00.000Z	38 \| good	6.6 \| good	11 \| good	21 \| good	0.195 \| good	6.823 \| good	0.287 \| good
2026-06-29T13:00:00.000Z	38 \| good	6.6 \| good	11 \| good	20 \| good	0.202 \| good	9.644 \| good	0.275 \| good
2026-06-29T14:00:00.000Z	38 \| good	7.1 \| good	12 \| good	26 \| good	0.2 \| good	8.147 \| good	0.231 \| good
2026-06-29T15:00:00.000Z	44 \| good	7.5 \| good	13 \| good	27 \| good	0.218 \| good	6.205 \| good	0.231 \| good
2026-06-29T16:00:00.000Z	44 \| good	8.4 \| good	13 \| good	32 \| good	0.237 \| good	7.959 \| good	0.232 \| good
2026-06-29T17:00:00.000Z	52 \| moderate	9.7 \| good	15 \| good	38 \| good	0.257 \| good	6.837 \| good	0.164 \| good
2026-06-29T18:00:00.000Z	54 \| moderate	10.9 \| good	16 \| good	40 \| good	0.278 \| good	7.595 \| good	0.187 \| good
2026-06-29T19:00:00.000Z	54 \| moderate	10.6 \| good	15 \| good	45 \| good	0.238 \| good	7.497 \| good	0.184 \| good
2026-06-29T20:00:00.000Z	54 \| moderate	10.5 \| good	15 \| good	49 \| good	0.179 \| good	9.061 \| good	0.221 \| good
2026-06-29T20:00:00.000Z	54 \| moderate	10.591 \| good	15.141 \| good	44.969 \| good	0.238 \| good	7.482 \| good	0.184 \| good
2026-06-29T20:00:00.000Z	58 \| moderate	10.444 \| good	46.334 \| good	56.691 \| fine	0.271 \| good	1.125 \| good	0.167 \| good
2026-06-29T21:00:00.000Z	52 \| moderate	10.309 \| good	45.941 \| good	53.139 \| good	0.255 \| good	1.318 \| good	0.17 \| good
2026-06-29T22:00:00.000Z	52 \| moderate	9.504 \| good	42.252 \| good	48.563 \| good	0.234 \| good	1.825 \| good	0.179 \| good
2026-06-29T23:00:00.000Z	52 \| moderate	9.878 \| good	43.879 \| good	46.33 \| good	0.212 \| good	2.496 \| good	0.189 \| good
2026-06-30T00:00:00.000Z	54 \| moderate	11.191 \| good	49.4 \| good	41.437 \| good	0.203 \| good	3.04 \| good	0.193 \| good
2026-06-30T01:00:00.000Z	54 \| moderate	10.884 \| good	48.154 \| good	35.727 \| good	0.211 \| good	2.896 \| good	0.188 \| good
2026-06-30T02:00:00.000Z	54 \| moderate	11.43 \| good	50.593 \| good	31.154 \| good	0.225 \| good	2.682 \| good	0.181 \| good
2026-06-30T03:00:00.000Z	56 \| moderate	11.6 \| good	51.692 \| good	30.176 \| good	0.239 \| good	2.503 \| good	0.173 \| good
2026-06-30T04:00:00.000Z	52 \| moderate	10.389 \| good	45.783 \| good	29.508 \| good	0.249 \| good	2.496 \| good	0.167 \| good
2026-06-30T05:00:00.000Z	49 \| good	9.039 \| good	40.273 \| good	24.566 \| good	0.255 \| good	2.589 \| good	0.162 \| good
2026-06-30T06:00:00.000Z	49 \| good	9.227 \| good	41 \| good	21.958 \| good	0.271 \| good	2.681 \| good	0.157 \| good
2026-06-30T07:00:00.000Z	49 \| good	8.57 \| good	37.445 \| good	19.861 \| good	0.288 \| good	2.995 \| good	0.154 \| good
2026-06-30T08:00:00.000Z	44 \| good	8.297 \| good	36.398 \| good	22.107 \| good	0.305 \| good	3.265 \| good	0.151 \| good
2026-06-30T09:00:00.000Z	49 \| good	8.555 \| good	37.377 \| good	25.886 \| good	0.328 \| good	3.534 \| good	0.148 \| good
2026-06-30T10:00:00.000Z	49 \| good	8.994 \| good	39.838 \| good	23.955 \| good	0.341 \| good	4.044 \| good	0.147 \| good
2026-06-30T11:00:00.000Z	44 \| good	8.41 \| good	36.714 \| good	26.111 \| good	0.339 \| good	3.969 \| good	0.149 \| good
2026-06-30T12:00:00.000Z	38 \| good	7.398 \| good	32.59 \| good	31.095 \| good	0.378 \| good	3.849 \| good	0.155 \| good
2026-06-30T13:00:00.000Z	38 \| good	7.353 \| good	32.317 \| good	36.459 \| good	0.447 \| good	3.63 \| good	0.164 \| good
2026-06-30T14:00:00.000Z	38 \| good	6.744 \| good	29.973 \| good	39.975 \| good	0.487 \| good	3.181 \| good	0.172 \| good
2026-06-30T15:00:00.000Z	40 \| good	7.112 \| good	31.417 \| good	43.312 \| good	0.49 \| good	2.723 \| good	0.174 \| good
2026-06-30T16:00:00.000Z	44 \| good	6.609 \| good	29.299 \| good	47.159 \| good	0.485 \| good	2.268 \| good	0.172 \| good
2026-06-30T17:00:00.000Z	48 \| good	6.138 \| good	27.067 \| good	51.88 \| good	0.468 \| good	1.819 \| good	0.167 \| good
2026-06-30T18:00:00.000Z	54 \| moderate	5.514 \| good	24.112 \| good	55.733 \| fine	0.46 \| good	1.417 \| good	0.162 \| good
2026-06-30T19:00:00.000Z	44 \| good	6.074 \| good	26.704 \| good	47.801 \| good	0.481 \| good	1.159 \| good	0.155 \| good
2026-06-30T20:00:00.000Z	44 \| good	6.514 \| good	28.843 \| good	48.282 \| good	0.445 \| good	1.01 \| good	0.144 \| good
2026-06-30T21:00:00.000Z	43 \| good	6.064 \| good	26.481 \| good	46.412 \| good	0.325 \| good	1.018 \| good	0.135 \| good
2026-06-30T22:00:00.000Z	38 \| good	4.755 \| good	20.648 \| good	41.014 \| good	0.198 \| good	1.209 \| good	0.131 \| good
2026-06-30T23:00:00.000Z	34 \| good	4.413 \| good	19.511 \| good	37.485 \| good	0.121 \| good	1.606 \| good	0.132 \| good
2026-07-01T00:00:00.000Z	38 \| good	6.987 \| good	30.756 \| good	36.706 \| good	0.095 \| good	1.934 \| good	0.132 \| good
2026-07-01T01:00:00.000Z	33 \| good	6.249 \| good	27.585 \| good	33.674 \| good	0.103 \| good	1.925 \| good	0.128 \| good
2026-07-01T02:00:00.000Z	33 \| good	6.465 \| good	28.751 \| good	30.627 \| good	0.121 \| good	1.885 \| good	0.127 \| good
2026-07-01T03:00:00.000Z	38 \| good	6.632 \| good	29.398 \| good	32.155 \| good	0.142 \| good	1.899 \| good	0.126 \| good
2026-07-01T04:00:00.000Z	33 \| good	6.197 \| good	27.408 \| good	33.672 \| good	0.162 \| good	1.997 \| good	0.126 \| good
2026-07-01T05:00:00.000Z	33 \| good	5.93 \| good	25.74 \| good	33.936 \| good	0.192 \| good	2.225 \| good	0.127 \| good
2026-07-01T06:00:00.000Z	33 \| good	6.001 \| good	26.309 \| good	33.181 \| good	0.234 \| good	2.476 \| good	0.127 \| good
2026-07-01T07:00:00.000Z	33 \| good	6.278 \| good	27.816 \| good	32.191 \| good	0.276 \| good	2.61 \| good	0.126 \| good
2026-07-01T08:00:00.000Z	38 \| good	7.335 \| good	32.33 \| good	28.861 \| good	0.311 \| good	2.661 \| good	0.126 \| good
2026-07-01T09:00:00.000Z	38 \| good	7.176 \| good	31.714 \| good	20.875 \| good	0.329 \| good	2.674 \| good	0.125 \| good
2026-07-01T10:00:00.000Z	44 \| good	7.542 \| good	33.233 \| good	20.076 \| good	0.326 \| good	2.674 \| good	0.125 \| good
2026-07-01T11:00:00.000Z	44 \| good	7.872 \| good	34.418 \| good	23.961 \| good	0.312 \| good	2.449 \| good	0.128 \| good
2026-07-01T12:00:00.000Z	44 \| good	8.217 \| good	35.883 \| good	33.298 \| good	0.321 \| good	2.151 \| good	0.132 \| good
2026-07-01T13:00:00.000Z	52 \| moderate	9.576 \| good	42.529 \| good	43.277 \| good	0.355 \| good	1.935 \| good	0.139 \| good
2026-07-01T14:00:00.000Z	56 \| moderate	11.692 \| good	52.044 \| good	52.021 \| good	0.376 \| good	1.655 \| good	0.146 \| good
2026-07-01T15:00:00.000Z	67 \| moderate	14.106 \| fine	63.119 \| fine	60.155 \| fine	0.383 \| good	1.382 \| good	0.151 \| good
2026-07-01T16:00:00.000Z	101 \| sensitive	15.185 \| fine	67.751 \| fine	70.643 \| fine	0.384 \| good	1.138 \| good	0.153 \| good
2026-07-01T17:00:00.000Z	112 \| sensitive	16.861 \| fine	74.946 \| fine	74.143 \| moderate	0.385 \| good	0.961 \| good	0.154 \| good
2026-07-01T18:00:00.000Z	136 \| sensitive	17.217 \| fine	76.213 \| fine	80.792 \| moderate	0.379 \| good	0.884 \| good	0.154 \| good
2026-07-01T19:00:00.000Z	140 \| sensitive	16.421 \| fine	72.983 \| fine	81.786 \| moderate	0.354 \| good	0.866 \| good	0.152 \| good

Groton

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Groton, Connecticut air quality map: Track AQI near you

0.20ppm

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 06:00:00 on 2026-06-29.

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 01:00:00 on 2026-06-29.

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 10.883 μg/m³.

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

The current PM₁₀ concentration at Groton, Connecticut is 16.108 μg/m³.

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

The current carbon monoxide (CO) concentration at Groton, Connecticut is 0.187 ppm.

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

The current sulfur dioxide (SO₂) concentration at Groton, Connecticut is 0.278 ppb.

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

The current ozone (O₃) concentration at Groton, Connecticut is 39.987 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Groton, Connecticut is 7.579 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-06-27T21:00:00.000Z	54 \| moderate	11.2 \| good	17 \| good	56 \| fine	0.198 \| good	4.878 \| good	0.201 \| good
2026-06-27T22:00:00.000Z	54 \| moderate	11.4 \| good	17 \| good	54 \| good	0.253 \| good	4.151 \| good	0.224 \| good
2026-06-27T23:00:00.000Z	54 \| moderate	11.3 \| good	17 \| good	53 \| good	0.251 \| good	5.866 \| good	0.222 \| good
2026-06-28T00:00:00.000Z	56 \| moderate	11.5 \| good	17 \| good	53 \| good	0.212 \| good	6.338 \| good	0.264 \| good
2026-06-28T01:00:00.000Z	56 \| moderate	11.5 \| good	17 \| good	53 \| good	0.234 \| good	4.073 \| good	0.239 \| good
2026-06-28T02:00:00.000Z	56 \| moderate	11.5 \| good	17 \| good	47 \| good	0.16 \| good	4.323 \| good	0.261 \| good
2026-06-28T03:00:00.000Z	58 \| moderate	13.05 \| fine	59 \| fine	49.326 \| good	0.348 \| good	5.653 \| good	0.221 \| good
2026-06-28T04:00:00.000Z	58 \| moderate	12.5 \| fine	18 \| good	31 \| good	0.16 \| good	6.267 \| good	0.303 \| good
2026-06-28T05:00:00.000Z	56 \| moderate	12.3 \| fine	17 \| good	32 \| good	0.157 \| good	9.28 \| good	0.323 \| good
2026-06-28T06:00:00.000Z	56 \| moderate	11.7 \| good	17 \| good	31 \| good	0.157 \| good	7.741 \| good	0.318 \| good
2026-06-28T07:00:00.000Z	56 \| moderate	11.7 \| good	17 \| good	31 \| good	0.368 \| good	3.884 \| good	0.271 \| good
2026-06-28T08:00:00.000Z	56 \| moderate	11.7 \| good	16 \| good	28 \| good	0.175 \| good	6.692 \| good	0.279 \| good
2026-06-28T09:00:00.000Z	56 \| moderate	11.7 \| good	16 \| good	28 \| good	0.325 \| good	8.289 \| good	0.259 \| good
2026-06-28T10:00:00.000Z	56 \| moderate	11.6 \| good	16 \| good	31 \| good	0.175 \| good	5.948 \| good	0.261 \| good
2026-06-28T11:00:00.000Z	54 \| moderate	11.4 \| good	15 \| good	31 \| good	0.318 \| good	9.018 \| good	0.302 \| good
2026-06-28T12:00:00.000Z	54 \| moderate	11.1 \| good	15 \| good	30 \| good	0.468 \| good	4.944 \| good	0.241 \| good
2026-06-28T13:00:00.000Z	54 \| moderate	11.1 \| good	15 \| good	30 \| good	0.468 \| good	5.569 \| good	0.21 \| good
2026-06-28T14:00:00.000Z	54 \| moderate	10.7 \| good	14 \| good	31 \| good	0.214 \| good	3.055 \| good	0.187 \| good
2026-06-28T15:00:00.000Z	54 \| moderate	10.5 \| good	14 \| good	33 \| good	0.197 \| good	3.388 \| good	0.164 \| good
2026-06-28T16:00:00.000Z	52 \| moderate	10.1 \| good	14 \| good	34 \| good	0.26 \| good	3.771 \| good	0.185 \| good
2026-06-28T17:00:00.000Z	52 \| moderate	9.6 \| good	13 \| good	39 \| good	0.182 \| good	4.588 \| good	0.186 \| good
2026-06-28T18:00:00.000Z	49 \| good	9.2 \| good	13 \| good	42 \| good	0.182 \| good	4.129 \| good	0.187 \| good
2026-06-28T19:00:00.000Z	49 \| good	8.8 \| good	13 \| good	47 \| good	0.216 \| good	3.06 \| good	0.208 \| good
2026-06-28T20:00:00.000Z	49 \| good	8.6 \| good	13 \| good	51 \| good	0.217 \| good	2.983 \| good	0.187 \| good
2026-06-28T21:00:00.000Z	49 \| good	8.2 \| good	13 \| good	53 \| good	0.254 \| good	4.201 \| good	0.187 \| good
2026-06-28T22:00:00.000Z	51 \| moderate	7.6 \| good	12 \| good	55 \| fine	0.235 \| good	4.681 \| good	0.21 \| good
2026-06-28T23:00:00.000Z	51 \| moderate	7.1 \| good	12 \| good	55 \| fine	0.232 \| good	5.505 \| good	0.187 \| good
2026-06-29T00:00:00.000Z	48 \| good	7 \| good	12 \| good	52 \| good	0.232 \| good	5.735 \| good	0.3 \| good
2026-06-29T01:00:00.000Z	46 \| good	6.7 \| good	11 \| good	50 \| good	0.138 \| good	5.224 \| good	0.209 \| good
2026-06-29T02:00:00.000Z	49 \| good	6.3 \| good	10 \| good	53 \| good	0.16 \| good	5.146 \| good	0.209 \| good
2026-06-29T03:00:00.000Z	52 \| moderate	9.935 \| good	44.582 \| good	28.863 \| good	0.258 \| good	2.323 \| good	0.17 \| good
2026-06-29T04:00:00.000Z	43 \| good	5.7 \| good	8 \| good	46 \| good	0.359 \| good	5.761 \| good	0.255 \| good
2026-06-29T05:00:00.000Z	43 \| good	5.7 \| good	8 \| good	46 \| good	0.281 \| good	7.46 \| good	0.201 \| good
2026-06-29T06:00:00.000Z	41 \| good	6 \| good	8 \| good	44 \| good	0.175 \| good	8.803 \| good	0.199 \| good
2026-06-29T07:00:00.000Z	39 \| good	6 \| good	8 \| good	42 \| good	0.325 \| good	8.6 \| good	0.227 \| good
2026-06-29T08:00:00.000Z	34 \| good	6.2 \| good	9 \| good	37 \| good	0.175 \| good	9.68 \| good	0.199 \| good
2026-06-29T09:00:00.000Z	33 \| good	6.1 \| good	8 \| good	35 \| good	0.175 \| good	10.316 \| good	0.222 \| good
2026-06-29T10:00:00.000Z	33 \| good	6.3 \| good	9 \| good	30 \| good	0.194 \| good	14.253 \| good	0.371 \| good
2026-06-29T11:00:00.000Z	38 \| good	6.5 \| good	10 \| good	24 \| good	0.176 \| good	10.077 \| good	0.371 \| good
2026-06-29T12:00:00.000Z	38 \| good	6.6 \| good	11 \| good	21 \| good	0.195 \| good	6.823 \| good	0.287 \| good
2026-06-29T13:00:00.000Z	38 \| good	6.6 \| good	11 \| good	20 \| good	0.202 \| good	9.644 \| good	0.275 \| good
2026-06-29T14:00:00.000Z	38 \| good	7.1 \| good	12 \| good	26 \| good	0.2 \| good	8.147 \| good	0.231 \| good
2026-06-29T15:00:00.000Z	44 \| good	7.5 \| good	13 \| good	27 \| good	0.218 \| good	6.205 \| good	0.231 \| good
2026-06-29T16:00:00.000Z	44 \| good	8.4 \| good	13 \| good	32 \| good	0.237 \| good	7.959 \| good	0.232 \| good
2026-06-29T17:00:00.000Z	52 \| moderate	9.7 \| good	15 \| good	38 \| good	0.257 \| good	6.837 \| good	0.164 \| good
2026-06-29T18:00:00.000Z	54 \| moderate	10.9 \| good	16 \| good	40 \| good	0.278 \| good	7.595 \| good	0.187 \| good
2026-06-29T19:00:00.000Z	54 \| moderate	10.6 \| good	15 \| good	45 \| good	0.238 \| good	7.497 \| good	0.184 \| good
2026-06-29T20:00:00.000Z	54 \| moderate	10.5 \| good	15 \| good	49 \| good	0.179 \| good	9.061 \| good	0.221 \| good
2026-06-29T20:00:00.000Z	54 \| moderate	10.591 \| good	15.141 \| good	44.969 \| good	0.238 \| good	7.482 \| good	0.184 \| good
2026-06-29T20:00:00.000Z	58 \| moderate	10.444 \| good	46.334 \| good	56.691 \| fine	0.271 \| good	1.125 \| good	0.167 \| good
2026-06-29T21:00:00.000Z	52 \| moderate	10.309 \| good	45.941 \| good	53.139 \| good	0.255 \| good	1.318 \| good	0.17 \| good
2026-06-29T22:00:00.000Z	52 \| moderate	9.504 \| good	42.252 \| good	48.563 \| good	0.234 \| good	1.825 \| good	0.179 \| good
2026-06-29T23:00:00.000Z	52 \| moderate	9.878 \| good	43.879 \| good	46.33 \| good	0.212 \| good	2.496 \| good	0.189 \| good
2026-06-30T00:00:00.000Z	54 \| moderate	11.191 \| good	49.4 \| good	41.437 \| good	0.203 \| good	3.04 \| good	0.193 \| good
2026-06-30T01:00:00.000Z	54 \| moderate	10.884 \| good	48.154 \| good	35.727 \| good	0.211 \| good	2.896 \| good	0.188 \| good
2026-06-30T02:00:00.000Z	54 \| moderate	11.43 \| good	50.593 \| good	31.154 \| good	0.225 \| good	2.682 \| good	0.181 \| good
2026-06-30T03:00:00.000Z	56 \| moderate	11.6 \| good	51.692 \| good	30.176 \| good	0.239 \| good	2.503 \| good	0.173 \| good
2026-06-30T04:00:00.000Z	52 \| moderate	10.389 \| good	45.783 \| good	29.508 \| good	0.249 \| good	2.496 \| good	0.167 \| good
2026-06-30T05:00:00.000Z	49 \| good	9.039 \| good	40.273 \| good	24.566 \| good	0.255 \| good	2.589 \| good	0.162 \| good
2026-06-30T06:00:00.000Z	49 \| good	9.227 \| good	41 \| good	21.958 \| good	0.271 \| good	2.681 \| good	0.157 \| good
2026-06-30T07:00:00.000Z	49 \| good	8.57 \| good	37.445 \| good	19.861 \| good	0.288 \| good	2.995 \| good	0.154 \| good
2026-06-30T08:00:00.000Z	44 \| good	8.297 \| good	36.398 \| good	22.107 \| good	0.305 \| good	3.265 \| good	0.151 \| good
2026-06-30T09:00:00.000Z	49 \| good	8.555 \| good	37.377 \| good	25.886 \| good	0.328 \| good	3.534 \| good	0.148 \| good
2026-06-30T10:00:00.000Z	49 \| good	8.994 \| good	39.838 \| good	23.955 \| good	0.341 \| good	4.044 \| good	0.147 \| good
2026-06-30T11:00:00.000Z	44 \| good	8.41 \| good	36.714 \| good	26.111 \| good	0.339 \| good	3.969 \| good	0.149 \| good
2026-06-30T12:00:00.000Z	38 \| good	7.398 \| good	32.59 \| good	31.095 \| good	0.378 \| good	3.849 \| good	0.155 \| good
2026-06-30T13:00:00.000Z	38 \| good	7.353 \| good	32.317 \| good	36.459 \| good	0.447 \| good	3.63 \| good	0.164 \| good
2026-06-30T14:00:00.000Z	38 \| good	6.744 \| good	29.973 \| good	39.975 \| good	0.487 \| good	3.181 \| good	0.172 \| good
2026-06-30T15:00:00.000Z	40 \| good	7.112 \| good	31.417 \| good	43.312 \| good	0.49 \| good	2.723 \| good	0.174 \| good
2026-06-30T16:00:00.000Z	44 \| good	6.609 \| good	29.299 \| good	47.159 \| good	0.485 \| good	2.268 \| good	0.172 \| good
2026-06-30T17:00:00.000Z	48 \| good	6.138 \| good	27.067 \| good	51.88 \| good	0.468 \| good	1.819 \| good	0.167 \| good
2026-06-30T18:00:00.000Z	54 \| moderate	5.514 \| good	24.112 \| good	55.733 \| fine	0.46 \| good	1.417 \| good	0.162 \| good
2026-06-30T19:00:00.000Z	44 \| good	6.074 \| good	26.704 \| good	47.801 \| good	0.481 \| good	1.159 \| good	0.155 \| good
2026-06-30T20:00:00.000Z	44 \| good	6.514 \| good	28.843 \| good	48.282 \| good	0.445 \| good	1.01 \| good	0.144 \| good
2026-06-30T21:00:00.000Z	43 \| good	6.064 \| good	26.481 \| good	46.412 \| good	0.325 \| good	1.018 \| good	0.135 \| good
2026-06-30T22:00:00.000Z	38 \| good	4.755 \| good	20.648 \| good	41.014 \| good	0.198 \| good	1.209 \| good	0.131 \| good
2026-06-30T23:00:00.000Z	34 \| good	4.413 \| good	19.511 \| good	37.485 \| good	0.121 \| good	1.606 \| good	0.132 \| good
2026-07-01T00:00:00.000Z	38 \| good	6.987 \| good	30.756 \| good	36.706 \| good	0.095 \| good	1.934 \| good	0.132 \| good
2026-07-01T01:00:00.000Z	33 \| good	6.249 \| good	27.585 \| good	33.674 \| good	0.103 \| good	1.925 \| good	0.128 \| good
2026-07-01T02:00:00.000Z	33 \| good	6.465 \| good	28.751 \| good	30.627 \| good	0.121 \| good	1.885 \| good	0.127 \| good
2026-07-01T03:00:00.000Z	38 \| good	6.632 \| good	29.398 \| good	32.155 \| good	0.142 \| good	1.899 \| good	0.126 \| good
2026-07-01T04:00:00.000Z	33 \| good	6.197 \| good	27.408 \| good	33.672 \| good	0.162 \| good	1.997 \| good	0.126 \| good
2026-07-01T05:00:00.000Z	33 \| good	5.93 \| good	25.74 \| good	33.936 \| good	0.192 \| good	2.225 \| good	0.127 \| good
2026-07-01T06:00:00.000Z	33 \| good	6.001 \| good	26.309 \| good	33.181 \| good	0.234 \| good	2.476 \| good	0.127 \| good
2026-07-01T07:00:00.000Z	33 \| good	6.278 \| good	27.816 \| good	32.191 \| good	0.276 \| good	2.61 \| good	0.126 \| good
2026-07-01T08:00:00.000Z	38 \| good	7.335 \| good	32.33 \| good	28.861 \| good	0.311 \| good	2.661 \| good	0.126 \| good
2026-07-01T09:00:00.000Z	38 \| good	7.176 \| good	31.714 \| good	20.875 \| good	0.329 \| good	2.674 \| good	0.125 \| good
2026-07-01T10:00:00.000Z	44 \| good	7.542 \| good	33.233 \| good	20.076 \| good	0.326 \| good	2.674 \| good	0.125 \| good
2026-07-01T11:00:00.000Z	44 \| good	7.872 \| good	34.418 \| good	23.961 \| good	0.312 \| good	2.449 \| good	0.128 \| good
2026-07-01T12:00:00.000Z	44 \| good	8.217 \| good	35.883 \| good	33.298 \| good	0.321 \| good	2.151 \| good	0.132 \| good
2026-07-01T13:00:00.000Z	52 \| moderate	9.576 \| good	42.529 \| good	43.277 \| good	0.355 \| good	1.935 \| good	0.139 \| good
2026-07-01T14:00:00.000Z	56 \| moderate	11.692 \| good	52.044 \| good	52.021 \| good	0.376 \| good	1.655 \| good	0.146 \| good
2026-07-01T15:00:00.000Z	67 \| moderate	14.106 \| fine	63.119 \| fine	60.155 \| fine	0.383 \| good	1.382 \| good	0.151 \| good
2026-07-01T16:00:00.000Z	101 \| sensitive	15.185 \| fine	67.751 \| fine	70.643 \| fine	0.384 \| good	1.138 \| good	0.153 \| good
2026-07-01T17:00:00.000Z	112 \| sensitive	16.861 \| fine	74.946 \| fine	74.143 \| moderate	0.385 \| good	0.961 \| good	0.154 \| good
2026-07-01T18:00:00.000Z	136 \| sensitive	17.217 \| fine	76.213 \| fine	80.792 \| moderate	0.379 \| good	0.884 \| good	0.154 \| good
2026-07-01T19:00:00.000Z	140 \| sensitive	16.421 \| fine	72.983 \| fine	81.786 \| moderate	0.354 \| good	0.866 \| good	0.152 \| 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)

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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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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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