Stay updated with real-time air quality in Somersworth, New Hampshire 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)
38
Good
Somersworth, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.73 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
24.62 μg/m³
0
55
155
255
425
605+
16.05 ppb
0
55
71
86
201
201+
1.63 ppb
0
36
76
186
605
1005+
11.71 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Somersworth, New Hampshire
Somersworth, New Hampshire
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AQI 23
Good
0.36μg/m³
PM2.5
4.92μg/m³
PM10
24.61ppb
O3
0.75ppb
SO2
1.46ppb
NO2
0.15ppm
CO
AQI 23
Good
0.34μg/m³
PM2.5
4.84μg/m³
PM10
25.35ppb
O3
0.75ppb
SO2
1.47ppb
NO2
0.15ppm
CO
AQI 23
Good
0.36μg/m³
PM2.5
4.90μg/m³
PM10
25.03ppb
O3
0.75ppb
SO2
1.46ppb
NO2
0.15ppm
CO
AQI 18
Good
0.40μg/m³
PM2.5
4.75μg/m³
PM10
19.40ppb
O3
0.79ppb
SO2
1.43ppb
NO2
0.15ppm
CO
AQI 24
Good
0.36μg/m³
PM2.5
4.91μg/m³
PM10
26.15ppb
O3
0.73ppb
SO2
1.47ppb
NO2
0.15ppm
CO
AQI 18
Good
0.40μg/m³
PM2.5
4.99μg/m³
PM10
19.01ppb
O3
0.80ppb
SO2
1.45ppb
NO2
0.15ppm
CO
Air quality measurements for New Hampshire, 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 Somersworth, New Hampshire is updated on an hourly basis.
The worst air quality in Somersworth, New Hampshire was recorded at 03:00:00 on 2025-10-31.
The best air quality in Somersworth, New Hampshire was recorded at 11:00:00 on 2025-10-31.
The real-time air quality index in Somersworth, New Hampshire is 20, currently categorized as Good.
The most common pollutant in Somersworth, New Hampshire is O3.
If the air quality in Somersworth, New Hampshire is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Somersworth, New Hampshire at present are 0.207 μg/m3.
The current PM10 levels in Somersworth, New Hampshire are 3.974 μg/m3.
The current carbon monoxide (CO) level in Somersworth, New Hampshire is 0.151 ppm.
The current sulfur dioxide (SO2) levels in Somersworth, New Hampshire are 0.702 ppb.
The current ozone (O3) levels at Somersworth, New Hampshire is 22.446 ppm.
The current nitrogen dioxide (NO2) levels at Somersworth, New Hampshire is 1.946 ppb.
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