Stay updated with real-time air quality in Groton, Massachusetts featuring accurate data on AQI, PM2.5, 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)
30
Good
Groton, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.48 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.68 μg/m³
0
55
155
255
425
605+
32.22 ppb
0
55
71
86
201
201+
0.56 ppb
0
36
76
186
605
1005+
2.06 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Groton, Massachusetts
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AQI 30
Good
3.39μg/m³
PM2.5
15.75μg/m³
PM10
32.39ppb
O3
0.56ppb
SO2
1.99ppb
NO2
0.20ppm
CO
AQI 30
Good
3.48μg/m³
PM2.5
15.44μg/m³
PM10
31.63ppb
O3
0.38ppb
SO2
2.45ppb
NO2
0.20ppm
CO
AQI 31
Good
3.56μg/m³
PM2.5
15.34μg/m³
PM10
32.66ppb
O3
0.48ppb
SO2
2.10ppb
NO2
0.20ppm
CO
AQI 30
Good
3.39μg/m³
PM2.5
15.52μg/m³
PM10
32.01ppb
O3
0.47ppb
SO2
2.31ppb
NO2
0.20ppm
CO
AQI 31
Good
3.57μg/m³
PM2.5
15.04μg/m³
PM10
32.82ppb
O3
0.48ppb
SO2
2.06ppb
NO2
0.20ppm
CO
AQI 30
Good
3.45μg/m³
PM2.5
15.31μg/m³
PM10
31.89ppb
O3
0.38ppb
SO2
2.56ppb
NO2
0.20ppm
CO
Air quality measurements for Massachusetts, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Groton, Massachusetts is updated on an hourly basis.
The worst air quality in Groton, Massachusetts was recorded at 03:00:00 on 2026-02-11.
The best air quality in Groton, Massachusetts was recorded at 01:00:00 on 2026-02-12.
The real-time air quality index in Groton, Massachusetts is 30, currently categorized as Good.
The most common pollutant in Groton, Massachusetts is O3.
If the air quality in Groton, Massachusetts is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Groton, Massachusetts at present are 3.475 μg/m3.
The current PM10 levels in Groton, Massachusetts are 15.676 μg/m3.
The current carbon monoxide (CO) level in Groton, Massachusetts is 0.2 ppm.
The current sulfur dioxide (SO2) levels in Groton, Massachusetts are 0.557 ppb.
The current ozone (O3) levels at Groton, Massachusetts is 32.217 ppm.
The current nitrogen dioxide (NO2) levels at Groton, Massachusetts is 2.055 ppb.
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