Stay updated with real-time air quality in Exeter, 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)
27
Good
Exeter, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
10.09 μg/m³
0
55
155
255
425
605+
28.97 ppb
0
55
71
86
201
201+
0.79 ppb
0
36
76
186
605
1005+
4.72 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Exeter, New Hampshire
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AQI 28
Good
4.27μg/m³
PM2.5
17.12μg/m³
PM10
30.41ppb
O3
0.77ppb
SO2
6.28ppb
NO2
0.24ppm
CO
AQI 28
Good
4.15μg/m³
PM2.5
13.89μg/m³
PM10
29.66ppb
O3
0.78ppb
SO2
6.23ppb
NO2
0.24ppm
CO
AQI 30
Good
4.26μg/m³
PM2.5
12.50μg/m³
PM10
31.60ppb
O3
0.77ppb
SO2
5.39ppb
NO2
0.24ppm
CO
AQI 31
Good
4.10μg/m³
PM2.5
6.24μg/m³
PM10
32.99ppb
O3
0.80ppb
SO2
6.48ppb
NO2
0.24ppm
CO
AQI 27
Good
4.08μg/m³
PM2.5
18.87μg/m³
PM10
29.02ppb
O3
0.77ppb
SO2
6.29ppb
NO2
0.24ppm
CO
AQI 31
Good
4.11μg/m³
PM2.5
6.33μg/m³
PM10
32.99ppb
O3
0.80ppb
SO2
6.48ppb
NO2
0.24ppm
CO
The air quality data for New Hampshire, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Exeter, New Hampshire are available every hour.
Exeter, New Hampshire experienced its worst air quality at 08:00:00, 2026-08-16.
The best air quality in Exeter, New Hampshire was observed at 10:00:00 on 2026-08-16.
The air quality in Exeter, New Hampshire right now is Good, with an AQI of 38.
In Exeter, New Hampshire, PM2.5 is the most frequently found pollutant.
When air quality in Exeter, New Hampshire is compromised, staying indoors and wearing a mask can reduce health risks.
Exeter, New Hampshire currently has a PM2.5 concentration of 6.975 μg/m3.
Exeter, New Hampshire currently has a PM10 concentration of 25.78 μg/m3.
The current carbon monoxide (CO) level in Exeter, New Hampshire is 0.215 ppm.
The current sulfur dioxide (SO2) concentration in Exeter, New Hampshire is 0.941 ppb.
Exeter, New Hampshire currently has an ozone (O3) concentration of 35.349 ppm.
The current level of nitrogen dioxide (NO2) in Exeter, New Hampshire is 3.026 ppb.
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