Stay updated with real-time air quality in Durham, 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)
31
Good
Durham, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.36 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
18.96 μg/m³
0
55
155
255
425
605+
32.77 ppb
0
55
71
86
201
201+
0.67 ppb
0
36
76
186
605
1005+
2.56 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Durham, New Hampshire
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AQI 44
Good
7.87μg/m³
PM2.5
34.32μg/m³
PM10
31.79ppb
O3
0.80ppb
SO2
3.28ppb
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 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
6.30μg/m³
PM2.5
11.06μg/m³
PM10
29.11ppb
O3
0.89ppb
SO2
3.32ppb
NO2
0.22ppm
CO
AQI 27
Good
5.24μg/m³
PM2.5
10.62μg/m³
PM10
28.76ppb
O3
0.72ppb
SO2
3.42ppb
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
Air quality data and pollutant measurements for New Hampshire, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Durham, New Hampshire is updated every hour.
The worst air quality in Durham, New Hampshire in the last 24 hours was observed at 02:00:00 on 2026-02-11.
In the last 24 hrs, the best air quality in Durham, New Hampshire was observed at 11:00:00 on 2026-02-11.
The current air quality in Durham, New Hampshire is 38, categorized as Good based on real-time data.
The most common pollutant in Durham, New Hampshire is PM2.5.
If the air quality in Durham, New Hampshire is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Durham, New Hampshire is 6.651 μg/m3.
The current PM10 concentration at Durham, New Hampshire is 37.37 μg/m3.
The current carbon monoxide (CO) concentration at Durham, New Hampshire is 0.22 ppm.
The current sulfur dioxide (SO2) concentration at Durham, New Hampshire is 0.865 ppb.
The current ozone (O3) concentration at Durham, New Hampshire is 31.523 ppm.
The current nitrogen dioxide (NO2) concentration at Durham, New Hampshire is 2.94 ppb.
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