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)
54
Moderate
Dover, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
10.84 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
36.53 μg/m³
0
55
155
255
425
605+
26.62 ppb
0
55
71
86
201
201+
0.90 ppb
0
36
76
186
605
1005+
2.14 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Dover, New Hampshire
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AQI 54
Moderate
10.61μg/m³
PM2.5
34.66μg/m³
PM10
25.64ppb
O3
0.70ppb
SO2
3.43ppb
NO2
0.12ppm
CO
AQI 54
Moderate
11.18μg/m³
PM2.5
28.14μg/m³
PM10
25.08ppb
O3
0.68ppb
SO2
3.25ppb
NO2
0.12ppm
CO
AQI 52
Moderate
10.14μg/m³
PM2.5
43.81μg/m³
PM10
25.67ppb
O3
0.72ppb
SO2
3.94ppb
NO2
0.12ppm
CO
AQI 56
Moderate
12.09μg/m³
PM2.5
23.18μg/m³
PM10
24.39ppb
O3
0.51ppb
SO2
3.33ppb
NO2
0.12ppm
CO
AQI 56
Moderate
12.09μg/m³
PM2.5
23.14μg/m³
PM10
24.29ppb
O3
0.51ppb
SO2
3.33ppb
NO2
0.12ppm
CO
AQI 56
Moderate
11.78μg/m³
PM2.5
24.27μg/m³
PM10
26.24ppb
O3
0.59ppb
SO2
3.48ppb
NO2
0.12ppm
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 03:00:00 on 2026-06-29.
The best air quality in Dover, New Hampshire was recorded at 07:00:00 on 2026-06-29.
The real-time air quality index in Dover, New Hampshire is 54, currently categorized as Moderate.
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 10.841 μg/m3.
The current PM10 levels in Dover, New Hampshire are 36.529 μg/m3.
The current carbon monoxide (CO) level in Dover, New Hampshire is 0.12 ppm.
The current sulfur dioxide (SO2) levels in Dover, New Hampshire are 0.9 ppb.
The current ozone (O3) levels at Dover, New Hampshire is 26.621 ppm.
The current nitrogen dioxide (NO2) levels at Dover, New Hampshire is 2.139 ppb.
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