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
5.99 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.95 μg/m³
0
55
155
255
425
605+
19.99 ppb
0
55
71
86
201
201+
0.55 ppb
0
36
76
186
605
1005+
7.03 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
8.38μg/m³
PM2.5
23.93μg/m³
PM10
20.34ppb
O3
0.54ppb
SO2
6.60ppb
NO2
0.18ppm
CO
AQI 49
Good
8.51μg/m³
PM2.5
19.25μg/m³
PM10
22.27ppb
O3
0.54ppb
SO2
6.47ppb
NO2
0.18ppm
CO
AQI 44
Good
8.36μg/m³
PM2.5
23.88μg/m³
PM10
20.30ppb
O3
0.54ppb
SO2
7.26ppb
NO2
0.18ppm
CO
AQI 27
Good
5.43μg/m³
PM2.5
9.06μg/m³
PM10
21.00ppb
O3
0.60ppb
SO2
6.32ppb
NO2
0.20ppm
CO
AQI 27
Good
5.35μg/m³
PM2.5
8.54μg/m³
PM10
21.00ppb
O3
0.60ppb
SO2
6.32ppb
NO2
0.20ppm
CO
AQI 38
Good
7.01μg/m³
PM2.5
18.57μg/m³
PM10
21.28ppb
O3
0.57ppb
SO2
6.60ppb
NO2
0.20ppm
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 12:00:00 on 2026-03-08.
The best air quality in Dover, New Hampshire was recorded at 02:00:00 on 2026-03-07.
The real-time air quality index in Dover, New Hampshire is 33, 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 5.993 μg/m3.
The current PM10 levels in Dover, New Hampshire are 11.945 μg/m3.
The current carbon monoxide (CO) level in Dover, New Hampshire is 0.196 ppm.
The current sulfur dioxide (SO2) levels in Dover, New Hampshire are 0.545 ppb.
The current ozone (O3) levels at Dover, New Hampshire is 19.986 ppm.
The current nitrogen dioxide (NO2) levels at Dover, New Hampshire is 7.034 ppb.
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