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

The current PM10 concentration at Groton, Connecticut is 17.022 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Groton, Connecticut is 0.319 ppb.

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

The current ozone (O3) concentration at Groton, Connecticut is 33.925 ppm.

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

The current nitrogen dioxide (NO2) concentration at Groton, Connecticut is 9.872 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 6.892 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)

Good

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)

6.89 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

17.02 μg/m³

155

255

425

605+

Ozone (O₃)

33.92 ppb

201

201+

Sulfur Dioxide (SO₂)

0.32 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

9.87 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.22 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
2026-01-20T12:00:00.000Z	28 \| good	5.2 \| good	12 \| good	29.554 \| good	0.273 \| good	11.967 \| good	0.307 \| good
2026-01-20T13:00:00.000Z	27 \| good	5.2 \| good	12 \| good	24.841 \| good	0.288 \| good	10.742 \| good	0.279 \| good
2026-01-20T14:00:00.000Z	33 \| good	5.8 \| good	14 \| good	26.199 \| good	0.295 \| good	9.466 \| good	0.265 \| good
2026-01-20T15:00:00.000Z	33 \| good	5.8 \| good	14 \| good	24.843 \| good	0.233 \| good	8.749 \| good	0.265 \| good
2026-01-20T16:00:00.000Z	27 \| good	5.3 \| good	13 \| good	28.302 \| good	0.254 \| good	6.978 \| good	0.265 \| good
2026-01-20T17:00:00.000Z	27 \| good	4.9 \| good	12 \| good	28.3 \| good	0.254 \| good	6.184 \| good	0.243 \| good
2026-01-20T18:00:00.000Z	29 \| good	4.6 \| good	12 \| good	31.041 \| good	0.233 \| good	5.801 \| good	0.221 \| good
2026-01-20T19:00:00.000Z	28 \| good	4.5 \| good	11 \| good	29.995 \| good	0.257 \| good	4.798 \| good	0.221 \| good
2026-01-20T20:00:00.000Z	29 \| good	4.4 \| good	11 \| good	30.585 \| good	0.273 \| good	5.315 \| good	0.243 \| good
2026-01-20T21:00:00.000Z	30 \| good	4.5 \| good	11 \| good	32.104 \| good	0.254 \| good	5.902 \| good	0.243 \| good
2026-01-20T22:00:00.000Z	29 \| good	4.6 \| good	12 \| good	30.839 \| good	0.273 \| good	4.254 \| good	0.238 \| good
2026-01-20T23:00:00.000Z	29 \| good	4.6 \| good	12 \| good	30.862 \| good	0.236 \| good	4.04 \| good	0.276 \| good
2026-01-21T00:00:00.000Z	30 \| good	4.4 \| good	12 \| good	32.059 \| good	0.215 \| good	6.076 \| good	0.264 \| good
2026-01-21T01:00:00.000Z	30 \| good	4.3 \| good	12 \| good	31.643 \| good	0.236 \| good	4.437 \| good	0.286 \| good
2026-01-21T02:00:00.000Z	27 \| good	4.3 \| good	12 \| good	29.117 \| good	0.238 \| good	4.404 \| good	0.303 \| good
2026-01-21T03:00:00.000Z	44 \| good	7.929 \| good	34.935 \| good	22.514 \| good	0.577 \| good	4.881 \| good	0.19 \| good
2026-01-21T04:00:00.000Z	28 \| good	4.4 \| good	11 \| good	30.366 \| good	0.349 \| good	10.669 \| good	0.284 \| good
2026-01-21T05:00:00.000Z	27 \| good	4.6 \| good	12 \| good	28.095 \| good	0.464 \| good	15.494 \| good	0.265 \| good
2026-01-21T06:00:00.000Z	27 \| good	4.7 \| good	12 \| good	28.359 \| good	0.389 \| good	16.349 \| good	0.243 \| good
2026-01-21T07:00:00.000Z	28 \| good	4.7 \| good	12 \| good	30.374 \| good	0.269 \| good	17.369 \| good	0.233 \| good
2026-01-21T08:00:00.000Z	28 \| good	4.9 \| good	12 \| good	30.073 \| good	0.295 \| good	20.934 \| good	0.186 \| good
2026-01-21T09:00:00.000Z	27 \| good	5 \| good	11 \| good	28.23 \| good	0.342 \| good	20.944 \| good	0.219 \| good
2026-01-21T10:00:00.000Z	27 \| good	5.1 \| good	12 \| good	27.846 \| good	0.34 \| good	22.164 \| good	0.221 \| good
2026-01-21T11:00:00.000Z	28 \| good	5.3 \| good	12 \| good	29.743 \| good	0.356 \| good	25.798 \| good	0.286 \| good
2026-01-21T12:00:00.000Z	27 \| good	5.4 \| good	12 \| good	27.298 \| good	0.454 \| good	27.806 \| good	0.358 \| good
2026-01-21T13:00:00.000Z	27 \| good	5.4 \| good	12 \| good	28.801 \| good	0.453 \| good	28.07 \| good	0.327 \| good
2026-01-21T14:00:00.000Z	27 \| good	5.4 \| good	13 \| good	23.046 \| good	0.81 \| good	21.418 \| good	0.404 \| good
2026-01-21T15:00:00.000Z	27 \| good	5.2 \| good	13 \| good	26.983 \| good	0.593 \| good	19.827 \| good	0.362 \| good
2026-01-21T16:00:00.000Z	29 \| good	5 \| good	13 \| good	30.524 \| good	0.657 \| good	11.874 \| good	0.282 \| good
2026-01-21T17:00:00.000Z	30 \| good	4.7 \| good	12 \| good	31.951 \| good	0.532 \| good	13.531 \| good	0.287 \| good
2026-01-21T18:00:00.000Z	31 \| good	4.5 \| good	12 \| good	33.128 \| good	0.582 \| good	12.99 \| good	0.265 \| good
2026-01-21T19:00:00.000Z	31 \| good	4.4 \| good	12 \| good	32.559 \| good	0.712 \| good	9.645 \| good	0.265 \| good
2026-01-21T20:00:00.000Z	35 \| good	4.2 \| good	12 \| good	38.293 \| good	0.434 \| good	6.534 \| good	0.245 \| good
2026-01-21T21:00:00.000Z	35 \| good	3.8 \| good	11 \| good	38.447 \| good	0.63 \| good	6.499 \| good	0.284 \| good
2026-01-21T22:00:00.000Z	37 \| good	3.6 \| good	10 \| good	39.91 \| good	0.508 \| good	7.601 \| good	0.284 \| good
2026-01-21T23:00:00.000Z	38 \| good	3.7 \| good	10 \| good	40.6 \| good	0.419 \| good	9.816 \| good	0.283 \| good
2026-01-22T00:00:00.000Z	31 \| good	4 \| good	11 \| good	33.967 \| good	0.357 \| good	8.941 \| good	0.283 \| good
2026-01-22T01:00:00.000Z	36 \| good	4.5 \| good	12 \| good	38.602 \| good	0.321 \| good	10.557 \| good	0.224 \| good
2026-01-22T02:00:00.000Z	32 \| good	4.9 \| good	14 \| good	34.815 \| good	0.326 \| good	12.542 \| good	0.224 \| good
2026-01-22T03:00:00.000Z	40 \| good	5.3 \| good	15 \| good	42.74 \| good	0.278 \| good	9.628 \| good	0.246 \| good
2026-01-22T04:00:00.000Z	40 \| good	5.7 \| good	16 \| good	43.037 \| good	0.26 \| good	9.063 \| good	0.201 \| good
2026-01-22T05:00:00.000Z	37 \| good	6.2 \| good	17 \| good	39.607 \| good	0.28 \| good	9.344 \| good	0.16 \| good
2026-01-22T06:00:00.000Z	38 \| good	6.6 \| good	18 \| good	37.849 \| good	0.281 \| good	7.112 \| good	0.163 \| good
2026-01-22T07:00:00.000Z	38 \| good	6.6 \| good	18 \| good	34.877 \| good	0.281 \| good	7.485 \| good	0.163 \| good
2026-01-22T08:00:00.000Z	38 \| good	6.5 \| good	17 \| good	37.975 \| good	0.3 \| good	5.832 \| good	0.1 \| good
2026-01-22T09:00:00.000Z	38 \| good	6.6 \| good	16 \| good	35.995 \| good	0.302 \| good	7.716 \| good	0.138 \| good
2026-01-22T10:00:00.000Z	38 \| good	6.9 \| good	17 \| good	33.92 \| good	0.319 \| good	9.869 \| good	0.221 \| good
2026-01-22T11:00:00.000Z	38 \| good	6.892 \| good	17.022 \| good	33.925 \| good	0.319 \| good	9.872 \| good	0.221 \| good
2026-01-22T12:00:00.000Z	38 \| good	7.34 \| good	32.341 \| good	33.7 \| good	1.376 \| good	4.518 \| good	0.162 \| good
2026-01-22T13:00:00.000Z	44 \| good	7.999 \| good	35.277 \| good	29.519 \| good	1.472 \| good	5.25 \| good	0.17 \| good
2026-01-22T14:00:00.000Z	49 \| good	9.195 \| good	40.802 \| good	27.105 \| good	1.568 \| good	5.981 \| good	0.177 \| good
2026-01-22T15:00:00.000Z	44 \| good	8.411 \| good	36.798 \| good	25.394 \| good	1.664 \| good	6.712 \| good	0.185 \| good
2026-01-22T16:00:00.000Z	44 \| good	8.442 \| good	37.044 \| good	29.29 \| good	1.769 \| good	6.227 \| good	0.185 \| good
2026-01-22T17:00:00.000Z	49 \| good	8.579 \| good	37.527 \| good	31.335 \| good	1.874 \| good	5.741 \| good	0.184 \| good
2026-01-22T18:00:00.000Z	38 \| good	6.548 \| good	29.256 \| good	33.013 \| good	1.979 \| good	5.256 \| good	0.184 \| good
2026-01-22T19:00:00.000Z	38 \| good	7.41 \| good	32.672 \| good	31.29 \| good	1.889 \| good	5.557 \| good	0.182 \| good
2026-01-22T20:00:00.000Z	44 \| good	8.483 \| good	37.035 \| good	33.618 \| good	1.799 \| good	5.859 \| good	0.18 \| good
2026-01-22T21:00:00.000Z	52 \| moderate	9.877 \| good	43.928 \| good	34.28 \| good	1.708 \| good	6.16 \| good	0.179 \| good
2026-01-22T22:00:00.000Z	52 \| moderate	9.604 \| good	42.936 \| good	34.001 \| good	1.696 \| good	6.521 \| good	0.181 \| good
2026-01-22T23:00:00.000Z	44 \| good	8.233 \| good	36.072 \| good	31.99 \| good	1.683 \| good	6.882 \| good	0.183 \| good
2026-01-23T00:00:00.000Z	38 \| good	7.058 \| good	31.37 \| good	25.981 \| good	1.67 \| good	7.242 \| good	0.185 \| good
2026-01-23T01:00:00.000Z	38 \| good	6.7 \| good	29.582 \| good	25.763 \| good	1.637 \| good	6.943 \| good	0.184 \| good
2026-01-23T02:00:00.000Z	44 \| good	7.876 \| good	34.531 \| good	26.165 \| good	1.605 \| good	6.644 \| good	0.182 \| good
2026-01-23T03:00:00.000Z	49 \| good	9.255 \| good	41.336 \| good	27.502 \| good	1.573 \| good	6.345 \| good	0.181 \| good
2026-01-23T04:00:00.000Z	49 \| good	8.681 \| good	38.121 \| good	31.182 \| good	1.263 \| good	5.327 \| good	0.177 \| good
2026-01-23T05:00:00.000Z	38 \| good	7.126 \| good	31.328 \| good	32.399 \| good	0.954 \| good	4.309 \| good	0.173 \| good
2026-01-23T06:00:00.000Z	33 \| good	6.184 \| good	27.293 \| good	30.465 \| good	0.645 \| good	3.292 \| good	0.169 \| good
2026-01-23T07:00:00.000Z	33 \| good	6.324 \| good	28.275 \| good	33.241 \| good	0.553 \| good	2.905 \| good	0.167 \| good
2026-01-23T08:00:00.000Z	33 \| good	6.25 \| good	27.619 \| good	35.01 \| good	0.462 \| good	2.518 \| good	0.164 \| good
2026-01-23T09:00:00.000Z	33 \| good	6.131 \| good	27.221 \| good	32.95 \| good	0.37 \| good	2.131 \| good	0.161 \| good
2026-01-23T10:00:00.000Z	38 \| good	7.096 \| good	31.382 \| good	32.697 \| good	0.413 \| good	2.42 \| good	0.161 \| good
2026-01-23T11:00:00.000Z	38 \| good	7.02 \| good	31.192 \| good	30.433 \| good	0.456 \| good	2.708 \| good	0.16 \| good
2026-01-23T12:00:00.000Z	33 \| good	5.927 \| good	25.98 \| good	31.665 \| good	0.498 \| good	2.997 \| good	0.16 \| good
2026-01-23T13:00:00.000Z	33 \| good	5.568 \| good	24.017 \| good	30.981 \| good	0.568 \| good	3.007 \| good	0.158 \| good
2026-01-23T14:00:00.000Z	27 \| good	5.159 \| good	22.343 \| good	27.86 \| good	0.638 \| good	3.017 \| good	0.156 \| good
2026-01-23T15:00:00.000Z	38 \| good	7.048 \| good	31.251 \| good	28.462 \| good	0.707 \| good	3.027 \| good	0.154 \| good
2026-01-23T16:00:00.000Z	44 \| good	7.719 \| good	33.93 \| good	31.639 \| good	0.771 \| good	2.964 \| good	0.153 \| good
2026-01-23T17:00:00.000Z	33 \| good	6.273 \| good	28.008 \| good	32.761 \| good	0.834 \| good	2.902 \| good	0.152 \| good
2026-01-23T18:00:00.000Z	38 \| good	6.623 \| good	29.521 \| good	31.633 \| good	0.897 \| good	2.839 \| good	0.151 \| good
2026-01-23T19:00:00.000Z	33 \| good	6.071 \| good	27.097 \| good	31.779 \| good	0.823 \| good	2.82 \| good	0.15 \| good
2026-01-23T20:00:00.000Z	38 \| good	6.837 \| good	30.483 \| good	39.35 \| good	0.75 \| good	2.8 \| good	0.149 \| good
2026-01-23T21:00:00.000Z	39 \| good	5.722 \| good	24.765 \| good	41.687 \| good	0.676 \| good	2.781 \| good	0.148 \| good
2026-01-23T22:00:00.000Z	38 \| good	4.417 \| good	19.238 \| good	41.333 \| good	0.571 \| good	2.639 \| good	0.147 \| good
2026-01-23T23:00:00.000Z	40 \| good	3.212 \| good	13.756 \| good	42.821 \| good	0.466 \| good	2.497 \| good	0.146 \| good
2026-01-24T00:00:00.000Z	31 \| good	3.579 \| good	16 \| good	32.778 \| good	0.361 \| good	2.355 \| good	0.145 \| good
2026-01-24T01:00:00.000Z	27 \| good	3.669 \| good	16 \| good	28.659 \| good	0.35 \| good	2.211 \| good	0.146 \| good
2026-01-24T02:00:00.000Z	22 \| good	4.198 \| good	18.407 \| good	22.498 \| good	0.339 \| good	2.067 \| good	0.146 \| good
2026-01-24T03:00:00.000Z	27 \| good	5.129 \| good	22.195 \| good	21.461 \| good	0.328 \| good	1.922 \| good	0.147 \| good
2026-01-24T04:00:00.000Z	22 \| good	4.239 \| good	18.867 \| good	23.942 \| good	0.297 \| good	1.771 \| good	0.146 \| good
2026-01-24T05:00:00.000Z	24 \| good	2.945 \| good	12 \| good	25.611 \| good	0.267 \| good	1.619 \| good	0.145 \| good
2026-01-24T06:00:00.000Z	31 \| good	1.709 \| good	1.876 \| good	33.269 \| good	0.236 \| good	1.472 \| good	0.144 \| good
2026-01-24T07:00:00.000Z	23 \| good	2.571 \| good	10 \| good	25.12 \| good	0.225 \| good	1.338 \| good	0.143 \| good
2026-01-24T08:00:00.000Z	27 \| good	2.734 \| good	11.036 \| good	28.599 \| good	0.215 \| good	1.209 \| good	0.142 \| good
2026-01-24T09:00:00.000Z	29 \| good	3.062 \| good	12.071 \| good	30.926 \| good	0.204 \| good	1.08 \| good	0.141 \| good
2026-01-24T10:00:00.000Z	30 \| good	3.667 \| good	16 \| good	31.514 \| good	0.21 \| good	1.123 \| good	0.141 \| good
2026-01-24T11:00:00.000Z	29 \| good	3.053 \| good	12 \| good	31.095 \| good	0.216 \| good	1.165 \| good	0.14 \| good

Groton

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Groton, Connecticut air quality map: Track AQI near you

0.23ppm

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 04:00:00 on 2026-01-22.

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 03:00:00 on 2026-01-21.

What is the current air quality in Groton, Connecticut?

The current air quality in Groton, Connecticut is 38, categorized as Good 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 6.892 μg/m³.

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

The current PM₁₀ concentration at Groton, Connecticut is 17.022 μg/m³.

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

The current carbon monoxide (CO) concentration at Groton, Connecticut is 0.221 ppm.

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

The current sulfur dioxide (SO₂) concentration at Groton, Connecticut is 0.319 ppb.

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

The current ozone (O₃) concentration at Groton, Connecticut is 33.925 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Groton, Connecticut is 9.872 ppb.

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Time	AQI	PM_2.5	PM₁₀	O₃	SO₂	NO₂	CO
2026-01-20T12:00:00.000Z	28 \| good	5.2 \| good	12 \| good	29.554 \| good	0.273 \| good	11.967 \| good	0.307 \| good
2026-01-20T13:00:00.000Z	27 \| good	5.2 \| good	12 \| good	24.841 \| good	0.288 \| good	10.742 \| good	0.279 \| good
2026-01-20T14:00:00.000Z	33 \| good	5.8 \| good	14 \| good	26.199 \| good	0.295 \| good	9.466 \| good	0.265 \| good
2026-01-20T15:00:00.000Z	33 \| good	5.8 \| good	14 \| good	24.843 \| good	0.233 \| good	8.749 \| good	0.265 \| good
2026-01-20T16:00:00.000Z	27 \| good	5.3 \| good	13 \| good	28.302 \| good	0.254 \| good	6.978 \| good	0.265 \| good
2026-01-20T17:00:00.000Z	27 \| good	4.9 \| good	12 \| good	28.3 \| good	0.254 \| good	6.184 \| good	0.243 \| good
2026-01-20T18:00:00.000Z	29 \| good	4.6 \| good	12 \| good	31.041 \| good	0.233 \| good	5.801 \| good	0.221 \| good
2026-01-20T19:00:00.000Z	28 \| good	4.5 \| good	11 \| good	29.995 \| good	0.257 \| good	4.798 \| good	0.221 \| good
2026-01-20T20:00:00.000Z	29 \| good	4.4 \| good	11 \| good	30.585 \| good	0.273 \| good	5.315 \| good	0.243 \| good
2026-01-20T21:00:00.000Z	30 \| good	4.5 \| good	11 \| good	32.104 \| good	0.254 \| good	5.902 \| good	0.243 \| good
2026-01-20T22:00:00.000Z	29 \| good	4.6 \| good	12 \| good	30.839 \| good	0.273 \| good	4.254 \| good	0.238 \| good
2026-01-20T23:00:00.000Z	29 \| good	4.6 \| good	12 \| good	30.862 \| good	0.236 \| good	4.04 \| good	0.276 \| good
2026-01-21T00:00:00.000Z	30 \| good	4.4 \| good	12 \| good	32.059 \| good	0.215 \| good	6.076 \| good	0.264 \| good
2026-01-21T01:00:00.000Z	30 \| good	4.3 \| good	12 \| good	31.643 \| good	0.236 \| good	4.437 \| good	0.286 \| good
2026-01-21T02:00:00.000Z	27 \| good	4.3 \| good	12 \| good	29.117 \| good	0.238 \| good	4.404 \| good	0.303 \| good
2026-01-21T03:00:00.000Z	44 \| good	7.929 \| good	34.935 \| good	22.514 \| good	0.577 \| good	4.881 \| good	0.19 \| good
2026-01-21T04:00:00.000Z	28 \| good	4.4 \| good	11 \| good	30.366 \| good	0.349 \| good	10.669 \| good	0.284 \| good
2026-01-21T05:00:00.000Z	27 \| good	4.6 \| good	12 \| good	28.095 \| good	0.464 \| good	15.494 \| good	0.265 \| good
2026-01-21T06:00:00.000Z	27 \| good	4.7 \| good	12 \| good	28.359 \| good	0.389 \| good	16.349 \| good	0.243 \| good
2026-01-21T07:00:00.000Z	28 \| good	4.7 \| good	12 \| good	30.374 \| good	0.269 \| good	17.369 \| good	0.233 \| good
2026-01-21T08:00:00.000Z	28 \| good	4.9 \| good	12 \| good	30.073 \| good	0.295 \| good	20.934 \| good	0.186 \| good
2026-01-21T09:00:00.000Z	27 \| good	5 \| good	11 \| good	28.23 \| good	0.342 \| good	20.944 \| good	0.219 \| good
2026-01-21T10:00:00.000Z	27 \| good	5.1 \| good	12 \| good	27.846 \| good	0.34 \| good	22.164 \| good	0.221 \| good
2026-01-21T11:00:00.000Z	28 \| good	5.3 \| good	12 \| good	29.743 \| good	0.356 \| good	25.798 \| good	0.286 \| good
2026-01-21T12:00:00.000Z	27 \| good	5.4 \| good	12 \| good	27.298 \| good	0.454 \| good	27.806 \| good	0.358 \| good
2026-01-21T13:00:00.000Z	27 \| good	5.4 \| good	12 \| good	28.801 \| good	0.453 \| good	28.07 \| good	0.327 \| good
2026-01-21T14:00:00.000Z	27 \| good	5.4 \| good	13 \| good	23.046 \| good	0.81 \| good	21.418 \| good	0.404 \| good
2026-01-21T15:00:00.000Z	27 \| good	5.2 \| good	13 \| good	26.983 \| good	0.593 \| good	19.827 \| good	0.362 \| good
2026-01-21T16:00:00.000Z	29 \| good	5 \| good	13 \| good	30.524 \| good	0.657 \| good	11.874 \| good	0.282 \| good
2026-01-21T17:00:00.000Z	30 \| good	4.7 \| good	12 \| good	31.951 \| good	0.532 \| good	13.531 \| good	0.287 \| good
2026-01-21T18:00:00.000Z	31 \| good	4.5 \| good	12 \| good	33.128 \| good	0.582 \| good	12.99 \| good	0.265 \| good
2026-01-21T19:00:00.000Z	31 \| good	4.4 \| good	12 \| good	32.559 \| good	0.712 \| good	9.645 \| good	0.265 \| good
2026-01-21T20:00:00.000Z	35 \| good	4.2 \| good	12 \| good	38.293 \| good	0.434 \| good	6.534 \| good	0.245 \| good
2026-01-21T21:00:00.000Z	35 \| good	3.8 \| good	11 \| good	38.447 \| good	0.63 \| good	6.499 \| good	0.284 \| good
2026-01-21T22:00:00.000Z	37 \| good	3.6 \| good	10 \| good	39.91 \| good	0.508 \| good	7.601 \| good	0.284 \| good
2026-01-21T23:00:00.000Z	38 \| good	3.7 \| good	10 \| good	40.6 \| good	0.419 \| good	9.816 \| good	0.283 \| good
2026-01-22T00:00:00.000Z	31 \| good	4 \| good	11 \| good	33.967 \| good	0.357 \| good	8.941 \| good	0.283 \| good
2026-01-22T01:00:00.000Z	36 \| good	4.5 \| good	12 \| good	38.602 \| good	0.321 \| good	10.557 \| good	0.224 \| good
2026-01-22T02:00:00.000Z	32 \| good	4.9 \| good	14 \| good	34.815 \| good	0.326 \| good	12.542 \| good	0.224 \| good
2026-01-22T03:00:00.000Z	40 \| good	5.3 \| good	15 \| good	42.74 \| good	0.278 \| good	9.628 \| good	0.246 \| good
2026-01-22T04:00:00.000Z	40 \| good	5.7 \| good	16 \| good	43.037 \| good	0.26 \| good	9.063 \| good	0.201 \| good
2026-01-22T05:00:00.000Z	37 \| good	6.2 \| good	17 \| good	39.607 \| good	0.28 \| good	9.344 \| good	0.16 \| good
2026-01-22T06:00:00.000Z	38 \| good	6.6 \| good	18 \| good	37.849 \| good	0.281 \| good	7.112 \| good	0.163 \| good
2026-01-22T07:00:00.000Z	38 \| good	6.6 \| good	18 \| good	34.877 \| good	0.281 \| good	7.485 \| good	0.163 \| good
2026-01-22T08:00:00.000Z	38 \| good	6.5 \| good	17 \| good	37.975 \| good	0.3 \| good	5.832 \| good	0.1 \| good
2026-01-22T09:00:00.000Z	38 \| good	6.6 \| good	16 \| good	35.995 \| good	0.302 \| good	7.716 \| good	0.138 \| good
2026-01-22T10:00:00.000Z	38 \| good	6.9 \| good	17 \| good	33.92 \| good	0.319 \| good	9.869 \| good	0.221 \| good
2026-01-22T11:00:00.000Z	38 \| good	6.892 \| good	17.022 \| good	33.925 \| good	0.319 \| good	9.872 \| good	0.221 \| good
2026-01-22T12:00:00.000Z	38 \| good	7.34 \| good	32.341 \| good	33.7 \| good	1.376 \| good	4.518 \| good	0.162 \| good
2026-01-22T13:00:00.000Z	44 \| good	7.999 \| good	35.277 \| good	29.519 \| good	1.472 \| good	5.25 \| good	0.17 \| good
2026-01-22T14:00:00.000Z	49 \| good	9.195 \| good	40.802 \| good	27.105 \| good	1.568 \| good	5.981 \| good	0.177 \| good
2026-01-22T15:00:00.000Z	44 \| good	8.411 \| good	36.798 \| good	25.394 \| good	1.664 \| good	6.712 \| good	0.185 \| good
2026-01-22T16:00:00.000Z	44 \| good	8.442 \| good	37.044 \| good	29.29 \| good	1.769 \| good	6.227 \| good	0.185 \| good
2026-01-22T17:00:00.000Z	49 \| good	8.579 \| good	37.527 \| good	31.335 \| good	1.874 \| good	5.741 \| good	0.184 \| good
2026-01-22T18:00:00.000Z	38 \| good	6.548 \| good	29.256 \| good	33.013 \| good	1.979 \| good	5.256 \| good	0.184 \| good
2026-01-22T19:00:00.000Z	38 \| good	7.41 \| good	32.672 \| good	31.29 \| good	1.889 \| good	5.557 \| good	0.182 \| good
2026-01-22T20:00:00.000Z	44 \| good	8.483 \| good	37.035 \| good	33.618 \| good	1.799 \| good	5.859 \| good	0.18 \| good
2026-01-22T21:00:00.000Z	52 \| moderate	9.877 \| good	43.928 \| good	34.28 \| good	1.708 \| good	6.16 \| good	0.179 \| good
2026-01-22T22:00:00.000Z	52 \| moderate	9.604 \| good	42.936 \| good	34.001 \| good	1.696 \| good	6.521 \| good	0.181 \| good
2026-01-22T23:00:00.000Z	44 \| good	8.233 \| good	36.072 \| good	31.99 \| good	1.683 \| good	6.882 \| good	0.183 \| good
2026-01-23T00:00:00.000Z	38 \| good	7.058 \| good	31.37 \| good	25.981 \| good	1.67 \| good	7.242 \| good	0.185 \| good
2026-01-23T01:00:00.000Z	38 \| good	6.7 \| good	29.582 \| good	25.763 \| good	1.637 \| good	6.943 \| good	0.184 \| good
2026-01-23T02:00:00.000Z	44 \| good	7.876 \| good	34.531 \| good	26.165 \| good	1.605 \| good	6.644 \| good	0.182 \| good
2026-01-23T03:00:00.000Z	49 \| good	9.255 \| good	41.336 \| good	27.502 \| good	1.573 \| good	6.345 \| good	0.181 \| good
2026-01-23T04:00:00.000Z	49 \| good	8.681 \| good	38.121 \| good	31.182 \| good	1.263 \| good	5.327 \| good	0.177 \| good
2026-01-23T05:00:00.000Z	38 \| good	7.126 \| good	31.328 \| good	32.399 \| good	0.954 \| good	4.309 \| good	0.173 \| good
2026-01-23T06:00:00.000Z	33 \| good	6.184 \| good	27.293 \| good	30.465 \| good	0.645 \| good	3.292 \| good	0.169 \| good
2026-01-23T07:00:00.000Z	33 \| good	6.324 \| good	28.275 \| good	33.241 \| good	0.553 \| good	2.905 \| good	0.167 \| good
2026-01-23T08:00:00.000Z	33 \| good	6.25 \| good	27.619 \| good	35.01 \| good	0.462 \| good	2.518 \| good	0.164 \| good
2026-01-23T09:00:00.000Z	33 \| good	6.131 \| good	27.221 \| good	32.95 \| good	0.37 \| good	2.131 \| good	0.161 \| good
2026-01-23T10:00:00.000Z	38 \| good	7.096 \| good	31.382 \| good	32.697 \| good	0.413 \| good	2.42 \| good	0.161 \| good
2026-01-23T11:00:00.000Z	38 \| good	7.02 \| good	31.192 \| good	30.433 \| good	0.456 \| good	2.708 \| good	0.16 \| good
2026-01-23T12:00:00.000Z	33 \| good	5.927 \| good	25.98 \| good	31.665 \| good	0.498 \| good	2.997 \| good	0.16 \| good
2026-01-23T13:00:00.000Z	33 \| good	5.568 \| good	24.017 \| good	30.981 \| good	0.568 \| good	3.007 \| good	0.158 \| good
2026-01-23T14:00:00.000Z	27 \| good	5.159 \| good	22.343 \| good	27.86 \| good	0.638 \| good	3.017 \| good	0.156 \| good
2026-01-23T15:00:00.000Z	38 \| good	7.048 \| good	31.251 \| good	28.462 \| good	0.707 \| good	3.027 \| good	0.154 \| good
2026-01-23T16:00:00.000Z	44 \| good	7.719 \| good	33.93 \| good	31.639 \| good	0.771 \| good	2.964 \| good	0.153 \| good
2026-01-23T17:00:00.000Z	33 \| good	6.273 \| good	28.008 \| good	32.761 \| good	0.834 \| good	2.902 \| good	0.152 \| good
2026-01-23T18:00:00.000Z	38 \| good	6.623 \| good	29.521 \| good	31.633 \| good	0.897 \| good	2.839 \| good	0.151 \| good
2026-01-23T19:00:00.000Z	33 \| good	6.071 \| good	27.097 \| good	31.779 \| good	0.823 \| good	2.82 \| good	0.15 \| good
2026-01-23T20:00:00.000Z	38 \| good	6.837 \| good	30.483 \| good	39.35 \| good	0.75 \| good	2.8 \| good	0.149 \| good
2026-01-23T21:00:00.000Z	39 \| good	5.722 \| good	24.765 \| good	41.687 \| good	0.676 \| good	2.781 \| good	0.148 \| good
2026-01-23T22:00:00.000Z	38 \| good	4.417 \| good	19.238 \| good	41.333 \| good	0.571 \| good	2.639 \| good	0.147 \| good
2026-01-23T23:00:00.000Z	40 \| good	3.212 \| good	13.756 \| good	42.821 \| good	0.466 \| good	2.497 \| good	0.146 \| good
2026-01-24T00:00:00.000Z	31 \| good	3.579 \| good	16 \| good	32.778 \| good	0.361 \| good	2.355 \| good	0.145 \| good
2026-01-24T01:00:00.000Z	27 \| good	3.669 \| good	16 \| good	28.659 \| good	0.35 \| good	2.211 \| good	0.146 \| good
2026-01-24T02:00:00.000Z	22 \| good	4.198 \| good	18.407 \| good	22.498 \| good	0.339 \| good	2.067 \| good	0.146 \| good
2026-01-24T03:00:00.000Z	27 \| good	5.129 \| good	22.195 \| good	21.461 \| good	0.328 \| good	1.922 \| good	0.147 \| good
2026-01-24T04:00:00.000Z	22 \| good	4.239 \| good	18.867 \| good	23.942 \| good	0.297 \| good	1.771 \| good	0.146 \| good
2026-01-24T05:00:00.000Z	24 \| good	2.945 \| good	12 \| good	25.611 \| good	0.267 \| good	1.619 \| good	0.145 \| good
2026-01-24T06:00:00.000Z	31 \| good	1.709 \| good	1.876 \| good	33.269 \| good	0.236 \| good	1.472 \| good	0.144 \| good
2026-01-24T07:00:00.000Z	23 \| good	2.571 \| good	10 \| good	25.12 \| good	0.225 \| good	1.338 \| good	0.143 \| good
2026-01-24T08:00:00.000Z	27 \| good	2.734 \| good	11.036 \| good	28.599 \| good	0.215 \| good	1.209 \| good	0.142 \| good
2026-01-24T09:00:00.000Z	29 \| good	3.062 \| good	12.071 \| good	30.926 \| good	0.204 \| good	1.08 \| good	0.141 \| good
2026-01-24T10:00:00.000Z	30 \| good	3.667 \| good	16 \| good	31.514 \| good	0.21 \| good	1.123 \| good	0.141 \| good
2026-01-24T11:00:00.000Z	29 \| good	3.053 \| good	12 \| good	31.095 \| good	0.216 \| good	1.165 \| good	0.14 \| 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 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?

What is the current concentration of PM₁₀ 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?

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