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

The current PM10 concentration at Groton, Connecticut is 4.029 μg/m3.

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

The current sulfur dioxide (SO2) concentration at Groton, Connecticut is 0.233 ppb.

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

The current ozone (O3) concentration at Groton, Connecticut is 28.768 ppm.

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

The current nitrogen dioxide (NO2) concentration at Groton, Connecticut is 4.029 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 2.299 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)

2.30 μg/m³

12.1

35.5

55.5

250.5

500.5+

Particulate Matter₁₀ (PM₁₀)

4.03 μg/m³

155

255

425

605+

Ozone (O₃)

28.77 ppb

201

201+

Sulfur Dioxide (SO₂)

0.23 ppb

186

605

1005+

Nitrogen Dioxide (NO₂)

4.03 ppb

101

361

1250

2050+

Carbon Monoxide (CO)

0.18 ppm

4.5

9.5

12.5

230.5

50.5+

Pollen Level

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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
2026-02-10T04:00:00.000Z	22 \| good	3.9 \| good	11 \| good	23.693 \| good	0.298 \| good	10.135 \| good	0.285 \| good
2026-02-10T05:00:00.000Z	22 \| good	4.1 \| good	12 \| good	23.862 \| good	0.295 \| good	11.027 \| good	0.288 \| good
2026-02-10T06:00:00.000Z	24 \| good	4.3 \| good	12 \| good	26.229 \| good	0.374 \| good	14.011 \| good	0.243 \| good
2026-02-10T07:00:00.000Z	22 \| good	4.3 \| good	12 \| good	24.221 \| good	0.362 \| good	14.556 \| good	0.223 \| good
2026-02-10T08:00:00.000Z	22 \| good	4.4 \| good	12 \| good	18.786 \| good	0.402 \| good	15.472 \| good	0.199 \| good
2026-02-10T09:00:00.000Z	27 \| good	4.7 \| good	11 \| good	14.246 \| good	0.488 \| good	26.784 \| good	0.258 \| good
2026-02-10T10:00:00.000Z	27 \| good	4.8 \| good	12 \| good	16.959 \| good	0.493 \| good	21.891 \| good	0.303 \| good
2026-02-10T11:00:00.000Z	27 \| good	4.9 \| good	14 \| good	17.798 \| good	0.513 \| good	19.446 \| good	0.344 \| good
2026-02-10T12:00:00.000Z	33 \| good	5.5 \| good	17 \| good	25.544 \| good	0.4 \| good	21.104 \| good	0.567 \| good
2026-02-10T13:00:00.000Z	33 \| good	5.5 \| good	17 \| good	18.653 \| good	0.413 \| good	20.911 \| good	0.638 \| good
2026-02-10T14:00:00.000Z	33 \| good	5.8 \| good	18 \| good	15.575 \| good	0.645 \| good	23.943 \| good	0.582 \| good
2026-02-10T15:00:00.000Z	33 \| good	5.7 \| good	15 \| good	21.459 \| good	0.862 \| good	10.884 \| good	0.397 \| good
2026-02-10T16:00:00.000Z	33 \| good	5.5 \| good	13 \| good	27.574 \| good	0.897 \| good	9.457 \| good	0.315 \| good
2026-02-10T17:00:00.000Z	31 \| good	5.4 \| good	12 \| good	33.672 \| good	0.706 \| good	9.092 \| good	0.317 \| good
2026-02-10T18:00:00.000Z	27 \| good	4.8 \| good	11 \| good	27.311 \| good	0.664 \| good	10.689 \| good	0.267 \| good
2026-02-10T19:00:00.000Z	27 \| good	4.6 \| good	10 \| good	26.264 \| good	0.322 \| good	10.221 \| good	0.239 \| good
2026-02-10T20:00:00.000Z	24 \| good	4.4 \| good	9 \| good	26.134 \| good	0.32 \| good	11.447 \| good	0.266 \| good
2026-02-10T21:00:00.000Z	30 \| good	4.7 \| good	10 \| good	31.622 \| good	0.339 \| good	14.19 \| good	0.266 \| good
2026-02-10T22:00:00.000Z	27 \| good	5 \| good	11 \| good	27.864 \| good	0.535 \| good	11.319 \| good	0.329 \| good
2026-02-10T23:00:00.000Z	31 \| good	5.1 \| good	11 \| good	33.611 \| good	7.862 \| good	8.775 \| good	1.067 \| good
2026-02-11T00:00:00.000Z	28 \| good	5.4 \| good	12 \| good	30.214 \| good	7.644 \| good	9.996 \| good	1.067 \| good
2026-02-11T01:00:00.000Z	38 \| good	6.5 \| good	12 \| good	31.333 \| good	7.764 \| good	12.863 \| good	1.043 \| good
2026-02-11T02:00:00.000Z	38 \| good	7.4 \| good	13 \| good	30.722 \| good	0.784 \| good	13.943 \| good	1.007 \| good
2026-02-11T03:00:00.000Z	49 \| good	8.8 \| good	14 \| good	34.097 \| good	0.749 \| good	13.595 \| good	1.026 \| good
2026-02-11T04:00:00.000Z	54 \| moderate	10.5 \| good	17 \| good	28.225 \| good	8.145 \| good	12.794 \| good	1.025 \| good
2026-02-11T05:00:00.000Z	54 \| moderate	11 \| good	17 \| good	28.45 \| good	9.224 \| good	13.961 \| good	0.806 \| good
2026-02-11T06:00:00.000Z	52 \| moderate	9.5 \| good	16 \| good	32.836 \| good	7.57 \| good	16.46 \| good	0.982 \| good
2026-02-11T07:00:00.000Z	52 \| moderate	9.5 \| good	16 \| good	31.769 \| good	7.984 \| good	18.819 \| good	1.047 \| good
2026-02-11T08:00:00.000Z	44 \| good	8 \| good	15 \| good	25.887 \| good	7.782 \| good	25.491 \| good	1.025 \| good
2026-02-11T09:00:00.000Z	49 \| good	9 \| good	16 \| good	20.683 \| good	7.845 \| good	23.042 \| good	1.061 \| good
2026-02-11T10:00:00.000Z	52 \| moderate	10.1 \| good	17 \| good	19.46 \| good	7.636 \| good	16.735 \| good	1.09 \| good
2026-02-11T11:00:00.000Z	54 \| moderate	11.4 \| good	18 \| good	17.309 \| good	7.297 \| good	28.255 \| good	1.089 \| good
2026-02-11T12:00:00.000Z	62 \| moderate	14.6 \| fine	21 \| good	18.668 \| good	7.601 \| good	21.435 \| good	1.192 \| good
2026-02-11T13:00:00.000Z	62 \| moderate	14.6 \| fine	21 \| good	10.976 \| good	7.762 \| good	19.448 \| good	1.316 \| good
2026-02-11T14:00:00.000Z	71 \| moderate	20 \| fine	26 \| good	13.027 \| good	7.357 \| good	18.808 \| good	1.211 \| good
2026-02-11T15:00:00.000Z	73 \| moderate	21.1 \| fine	27 \| good	19.242 \| good	6.768 \| good	17.555 \| good	1.125 \| good
2026-02-11T16:00:00.000Z	75 \| moderate	22.2 \| fine	29 \| good	23.831 \| good	6.95 \| good	9.088 \| good	1.037 \| good
2026-02-11T17:00:00.000Z	69 \| moderate	19.1 \| fine	24 \| good	29.206 \| good	7.102 \| good	7.22 \| good	1.017 \| good
2026-02-11T18:00:00.000Z	64 \| moderate	16.3 \| fine	21 \| good	26.403 \| good	0.423 \| good	7.619 \| good	0.244 \| good
2026-02-11T19:00:00.000Z	62 \| moderate	15.1 \| fine	20 \| good	29.008 \| good	0.381 \| good	7.604 \| good	0.221 \| good
2026-02-11T20:00:00.000Z	58 \| moderate	12.8 \| fine	17 \| good	30.222 \| good	0.317 \| good	6.3 \| good	0.222 \| good
2026-02-11T21:00:00.000Z	52 \| moderate	10.2 \| good	14 \| good	31.855 \| good	0.318 \| good	4.776 \| good	0.186 \| good
2026-02-11T22:00:00.000Z	44 \| good	7.8 \| good	11 \| good	29.595 \| good	0.311 \| good	4.874 \| good	0.218 \| good
2026-02-11T23:00:00.000Z	33 \| good	5.9 \| good	9 \| good	28.689 \| good	0.271 \| good	5.957 \| good	0.238 \| good
2026-02-12T00:00:00.000Z	27 \| good	4.8 \| good	8 \| good	27.602 \| good	0.273 \| good	5.667 \| good	0.201 \| good
2026-02-12T01:00:00.000Z	22 \| good	3.5 \| good	6 \| good	22.802 \| good	0.273 \| good	4.319 \| good	0.179 \| good
2026-02-12T02:00:00.000Z	22 \| good	2.7 \| good	5 \| good	23.975 \| good	0.273 \| good	4.315 \| good	0.179 \| good
2026-02-12T03:00:00.000Z	27 \| good	2.3 \| good	4 \| good	28.773 \| good	0.233 \| good	4.03 \| good	0.179 \| good
2026-02-12T03:00:00.000Z	27 \| good	2.299 \| good	4.029 \| good	28.768 \| good	0.233 \| good	4.029 \| good	0.179 \| good
2026-02-12T04:00:00.000Z	38 \| good	7.299 \| good	32.25 \| good	15.066 \| good	0.438 \| good	2.959 \| good	0.169 \| good
2026-02-12T05:00:00.000Z	49 \| good	8.951 \| good	39.585 \| good	19.087 \| good	0.51 \| good	2.259 \| good	0.169 \| good
2026-02-12T06:00:00.000Z	56 \| moderate	11.955 \| good	53.431 \| good	23.046 \| good	0.583 \| good	1.559 \| good	0.169 \| good
2026-02-12T07:00:00.000Z	54 \| moderate	11.409 \| good	50.589 \| good	33.95 \| good	0.511 \| good	1.381 \| good	0.164 \| good
2026-02-12T08:00:00.000Z	52 \| moderate	10.211 \| good	45.064 \| good	33.742 \| good	0.44 \| good	1.203 \| good	0.159 \| good
2026-02-12T09:00:00.000Z	49 \| good	8.658 \| good	37.874 \| good	29.199 \| good	0.369 \| good	1.025 \| good	0.154 \| good
2026-02-12T10:00:00.000Z	54 \| moderate	11.351 \| good	50.419 \| good	29.216 \| good	0.358 \| good	1.134 \| good	0.153 \| good
2026-02-12T11:00:00.000Z	52 \| moderate	9.683 \| good	43.23 \| good	27.643 \| good	0.347 \| good	1.243 \| good	0.152 \| good
2026-02-12T12:00:00.000Z	38 \| good	7.315 \| good	32.169 \| good	29.347 \| good	0.337 \| good	1.353 \| good	0.152 \| good
2026-02-12T13:00:00.000Z	38 \| good	6.773 \| good	29.979 \| good	30.309 \| good	0.347 \| good	1.363 \| good	0.153 \| good
2026-02-12T14:00:00.000Z	27 \| good	5.071 \| good	21.809 \| good	27.842 \| good	0.356 \| good	1.374 \| good	0.154 \| good
2026-02-12T15:00:00.000Z	28 \| good	2.831 \| good	11.634 \| good	30.427 \| good	0.366 \| good	1.384 \| good	0.155 \| good
2026-02-12T16:00:00.000Z	31 \| good	2.481 \| good	10.017 \| good	33.926 \| good	0.358 \| good	1.284 \| good	0.154 \| good
2026-02-12T17:00:00.000Z	36 \| good	2.424 \| good	9.973 \| good	38.784 \| good	0.349 \| good	1.184 \| good	0.152 \| good
2026-02-12T18:00:00.000Z	35 \| good	4.872 \| good	21.158 \| good	38.229 \| good	0.34 \| good	1.083 \| good	0.151 \| good
2026-02-12T19:00:00.000Z	38 \| good	7.02 \| good	31.087 \| good	38.572 \| good	0.342 \| good	1.247 \| good	0.15 \| good
2026-02-12T20:00:00.000Z	44 \| good	8.11 \| good	35.573 \| good	42.955 \| good	0.343 \| good	1.411 \| good	0.149 \| good
2026-02-12T21:00:00.000Z	37 \| good	5.473 \| good	23.5 \| good	39.893 \| good	0.345 \| good	1.575 \| good	0.148 \| good
2026-02-12T22:00:00.000Z	35 \| good	4.926 \| good	21.042 \| good	38.231 \| good	0.35 \| good	2.009 \| good	0.151 \| good
2026-02-12T23:00:00.000Z	31 \| good	3.364 \| good	14.588 \| good	33.524 \| good	0.356 \| good	2.443 \| good	0.154 \| good
2026-02-13T00:00:00.000Z	23 \| good	3.129 \| good	13.407 \| good	24.558 \| good	0.362 \| good	2.877 \| good	0.157 \| good
2026-02-13T01:00:00.000Z	21 \| good	2.539 \| good	10.302 \| good	23.35 \| good	0.357 \| good	2.829 \| good	0.158 \| good
2026-02-13T02:00:00.000Z	49 \| good	9.118 \| good	40.756 \| good	18.369 \| good	0.352 \| good	2.782 \| good	0.16 \| good
2026-02-13T03:00:00.000Z	33 \| good	5.563 \| good	24.082 \| good	21.752 \| good	0.347 \| good	2.735 \| good	0.161 \| good
2026-02-13T04:00:00.000Z	27 \| good	5.166 \| good	22.634 \| good	23.831 \| good	0.342 \| good	2.469 \| good	0.159 \| good
2026-02-13T05:00:00.000Z	33 \| good	5.635 \| good	24.448 \| good	23.263 \| good	0.337 \| good	2.202 \| good	0.157 \| good
2026-02-13T06:00:00.000Z	39 \| good	3.492 \| good	3.811 \| good	42.263 \| good	0.331 \| good	1.948 \| good	0.155 \| good
2026-02-13T07:00:00.000Z	17 \| good	3.192 \| good	13.991 \| good	18.475 \| good	0.324 \| good	1.799 \| good	0.153 \| good
2026-02-13T08:00:00.000Z	22 \| good	3.769 \| good	16.405 \| good	14.647 \| good	0.318 \| good	1.662 \| good	0.152 \| good
2026-02-13T09:00:00.000Z	22 \| good	3.52 \| good	15.343 \| good	5.211 \| good	0.311 \| good	1.525 \| good	0.15 \| good
2026-02-13T10:00:00.000Z	49 \| good	8.507 \| good	37.337 \| good	10.686 \| good	0.332 \| good	1.809 \| good	0.152 \| good
2026-02-13T11:00:00.000Z	49 \| good	8.877 \| good	39.174 \| good	12.221 \| good	0.353 \| good	2.093 \| good	0.154 \| good
2026-02-13T12:00:00.000Z	38 \| good	3.649 \| good	3.858 \| good	40.662 \| good	0.38 \| good	2.443 \| good	0.157 \| good
2026-02-13T13:00:00.000Z	38 \| good	4.058 \| good	4.28 \| good	40.656 \| good	0.421 \| good	2.604 \| good	0.16 \| good
2026-02-13T14:00:00.000Z	38 \| good	4.124 \| good	4.379 \| good	40.649 \| good	0.461 \| good	2.765 \| good	0.164 \| good
2026-02-13T15:00:00.000Z	38 \| good	3.786 \| good	4.077 \| good	40.643 \| good	0.502 \| good	2.926 \| good	0.168 \| good
2026-02-13T16:00:00.000Z	27 \| good	1.587 \| good	6.636 \| good	29.131 \| good	0.499 \| good	2.907 \| good	0.168 \| good
2026-02-13T17:00:00.000Z	32 \| good	1.487 \| good	5.964 \| good	34.858 \| good	0.501 \| good	2.91 \| good	0.168 \| good
2026-02-13T18:00:00.000Z	38 \| good	3.907 \| good	4.229 \| good	41.47 \| good	0.505 \| good	2.907 \| good	0.168 \| good
2026-02-13T19:00:00.000Z	38 \| good	4.166 \| good	4.484 \| good	41.248 \| good	0.496 \| good	3.355 \| good	0.17 \| good
2026-02-13T20:00:00.000Z	38 \| good	4.431 \| good	4.733 \| good	41.026 \| good	0.487 \| good	3.802 \| good	0.173 \| good
2026-02-13T21:00:00.000Z	38 \| good	4.805 \| good	5.079 \| good	40.805 \| good	0.478 \| good	4.25 \| good	0.175 \| good
2026-02-13T22:00:00.000Z	35 \| good	5.777 \| good	6.054 \| good	38.057 \| good	0.566 \| good	6.497 \| good	0.19 \| good
2026-02-13T23:00:00.000Z	38 \| good	7.232 \| good	7.539 \| good	35.309 \| good	0.653 \| good	8.745 \| good	0.206 \| good
2026-02-14T00:00:00.000Z	49 \| good	9.052 \| good	9.391 \| good	32.562 \| good	0.741 \| good	10.992 \| good	0.222 \| good
2026-02-14T01:00:00.000Z	33 \| good	6.174 \| good	27.479 \| good	25.986 \| good	1.018 \| good	13.843 \| good	0.24 \| good
2026-02-14T02:00:00.000Z	60 \| moderate	14.435 \| fine	14.848 \| good	23.967 \| good	1.314 \| good	17.171 \| good	0.264 \| good
2026-02-14T03:00:00.000Z	66 \| moderate	17.042 \| fine	17.493 \| good	19.67 \| good	1.601 \| good	20.26 \| good	0.285 \| good

Groton

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Groton, Connecticut air quality map: Track AQI near you

0.19ppm

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 2026-02-11.

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 2026-02-12.

What is the current air quality in Groton, Connecticut?

The current air quality in Groton, Connecticut is 27, 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 O3.

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 2.299 μg/m³.

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

The current PM₁₀ concentration at Groton, Connecticut is 4.029 μg/m³.

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

The current carbon monoxide (CO) concentration at Groton, Connecticut is 0.179 ppm.

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

The current sulfur dioxide (SO₂) concentration at Groton, Connecticut is 0.233 ppb.

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

The current ozone (O₃) concentration at Groton, Connecticut is 28.768 ppm.

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

The current nitrogen dioxide (NO₂) concentration at Groton, Connecticut is 4.029 ppb.

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