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)
44
Good
Dover, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.13 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.42 μg/m³
0
55
155
255
425
605+
46.53 ppb
0
55
71
86
201
201+
0.47 ppb
0
36
76
186
605
1005+
6.12 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Dover, New Hampshire
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AQI 34
Good
4.77μg/m³
PM2.5
16.12μg/m³
PM10
37.21ppb
O3
0.61ppb
SO2
3.31ppb
NO2
0.14ppm
CO
AQI 36
Good
5.02μg/m³
PM2.5
14.90μg/m³
PM10
39.44ppb
O3
0.62ppb
SO2
2.37ppb
NO2
0.13ppm
CO
AQI 37
Good
4.95μg/m³
PM2.5
15.11μg/m³
PM10
40.43ppb
O3
0.62ppb
SO2
3.45ppb
NO2
0.14ppm
CO
AQI 47
Good
5.76μg/m³
PM2.5
14.05μg/m³
PM10
50.85ppb
O3
0.60ppb
SO2
7.29ppb
NO2
0.15ppm
CO
AQI 47
Good
5.77μg/m³
PM2.5
14.04μg/m³
PM10
50.89ppb
O3
0.60ppb
SO2
7.30ppb
NO2
0.15ppm
CO
AQI 45
Good
5.44μg/m³
PM2.5
14.62μg/m³
PM10
49.05ppb
O3
0.59ppb
SO2
7.12ppb
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 Dover, New Hampshire is updated on an hourly basis.
The worst air quality in Dover, New Hampshire was recorded at 04:00:00 on 2026-05-13.
The best air quality in Dover, New Hampshire was recorded at 12:00:00 on 2026-05-13.
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 O3.
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 5.128 μg/m3.
The current PM10 levels in Dover, New Hampshire are 14.422 μg/m3.
The current carbon monoxide (CO) level in Dover, New Hampshire is 0.155 ppm.
The current sulfur dioxide (SO2) levels in Dover, New Hampshire are 0.472 ppb.
The current ozone (O3) levels at Dover, New Hampshire is 46.535 ppm.
The current nitrogen dioxide (NO2) levels at Dover, New Hampshire is 6.12 ppb.
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