Stay updated with real-time air quality in Somerset, 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)
29
Good
Somerset, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.90 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.09 μg/m³
0
55
155
255
425
605+
30.56 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
5.03 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Somerset, Massachusetts
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AQI 29
Good
4.73μg/m³
PM2.5
20.68μg/m³
PM10
30.57ppb
O3
0.26ppb
SO2
5.45ppb
NO2
0.22ppm
CO
AQI 28
Good
5.25μg/m³
PM2.5
22.77μg/m³
PM10
30.05ppb
O3
0.30ppb
SO2
5.20ppb
NO2
0.22ppm
CO
AQI 28
Good
5.19μg/m³
PM2.5
22.45μg/m³
PM10
30.13ppb
O3
0.29ppb
SO2
5.23ppb
NO2
0.22ppm
CO
AQI 28
Good
3.65μg/m³
PM2.5
15.89μg/m³
PM10
29.85ppb
O3
0.28ppb
SO2
4.63ppb
NO2
0.20ppm
CO
AQI 31
Good
4.32μg/m³
PM2.5
12.31μg/m³
PM10
32.69ppb
O3
0.27ppb
SO2
5.15ppb
NO2
0.22ppm
CO
AQI 30
Good
3.87μg/m³
PM2.5
11.04μg/m³
PM10
31.83ppb
O3
0.36ppb
SO2
4.45ppb
NO2
0.21ppm
CO
The air quality data for Massachusetts, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Somerset, Massachusetts are available every hour.
Somerset, Massachusetts experienced its worst air quality at 01:00:00, 2026-08-14.
The best air quality in Somerset, Massachusetts was observed at 04:00:00 on 2026-08-14.
The air quality in Somerset, Massachusetts right now is Good, with an AQI of 29.
In Somerset, Massachusetts, O3 is the most frequently found pollutant.
When air quality in Somerset, Massachusetts is compromised, staying indoors and wearing a mask can reduce health risks.
Somerset, Massachusetts currently has a PM2.5 concentration of 4.896 μg/m3.
Somerset, Massachusetts currently has a PM10 concentration of 21.092 μg/m3.
The current carbon monoxide (CO) level in Somerset, Massachusetts is 0.208 ppm.
The current sulfur dioxide (SO2) concentration in Somerset, Massachusetts is 0.275 ppb.
Somerset, Massachusetts currently has an ozone (O3) concentration of 30.563 ppm.
The current level of nitrogen dioxide (NO2) in Somerset, Massachusetts is 5.03 ppb.
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