Stay updated with real-time air quality in Dover, 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)
33
Good
Dover, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.14 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
34.17 μg/m³
0
55
155
255
425
605+
33.46 ppb
0
55
71
86
201
201+
0.69 ppb
0
36
76
186
605
1005+
2.58 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Dover, New Hampshire
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AQI 44
Good
7.57μg/m³
PM2.5
20.98μg/m³
PM10
31.86ppb
O3
0.79ppb
SO2
3.29ppb
NO2
0.22ppm
CO
AQI 33
Good
5.53μg/m³
PM2.5
23.67μg/m³
PM10
31.42ppb
O3
0.77ppb
SO2
3.25ppb
NO2
0.22ppm
CO
AQI 38
Good
6.79μg/m³
PM2.5
18.41μg/m³
PM10
31.01ppb
O3
0.79ppb
SO2
3.26ppb
NO2
0.22ppm
CO
AQI 33
Good
6.30μg/m³
PM2.5
11.06μg/m³
PM10
29.11ppb
O3
0.89ppb
SO2
3.32ppb
NO2
0.22ppm
CO
AQI 33
Good
6.32μg/m³
PM2.5
11.04μg/m³
PM10
29.08ppb
O3
0.90ppb
SO2
3.32ppb
NO2
0.22ppm
CO
AQI 33
Good
6.11μg/m³
PM2.5
13.00μg/m³
PM10
30.25ppb
O3
0.84ppb
SO2
3.35ppb
NO2
0.22ppm
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 Dover, New Hampshire is updated on an hourly basis.
The worst air quality in Dover, New Hampshire was recorded at 02:00:00 on 2026-02-11.
The best air quality in Dover, New Hampshire was recorded at 11:00:00 on 2026-02-11.
The real-time air quality index in Dover, New Hampshire is 44, currently categorized as Good.
The most common pollutant in Dover, New Hampshire is PM2.5.
If the air quality in Dover, New Hampshire is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Dover, New Hampshire at present are 7.873 μg/m3.
The current PM10 levels in Dover, New Hampshire are 34.32 μg/m3.
The current carbon monoxide (CO) level in Dover, New Hampshire is 0.219 ppm.
The current sulfur dioxide (SO2) levels in Dover, New Hampshire are 0.796 ppb.
The current ozone (O3) levels at Dover, New Hampshire is 31.785 ppm.
The current nitrogen dioxide (NO2) levels at Dover, New Hampshire is 3.277 ppb.
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