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)
34
Good
Durham, New Hampshire
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.83 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
35.83 μg/m³
0
55
155
255
425
605+
37.05 ppb
0
55
71
86
201
201+
0.65 ppb
0
36
76
186
605
1005+
9.87 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Durham, New Hampshire
Durham, New Hampshire
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AQI 41
Good
6.73μg/m³
PM2.5
43.70μg/m³
PM10
37.55ppb
O3
1.34ppb
SO2
5.79ppb
NO2
0.21ppm
CO
AQI 50
Good
7.99μg/m³
PM2.5
53.90μg/m³
PM10
24.03ppb
O3
2.00ppb
SO2
5.53ppb
NO2
0.23ppm
CO
AQI 38
Good
6.62μg/m³
PM2.5
41.47μg/m³
PM10
37.37ppb
O3
1.31ppb
SO2
5.81ppb
NO2
0.21ppm
CO
AQI 50
Good
7.99μg/m³
PM2.5
53.87μg/m³
PM10
24.04ppb
O3
2.00ppb
SO2
5.53ppb
NO2
0.23ppm
CO
AQI 33
Good
5.74μg/m³
PM2.5
21.29μg/m³
PM10
30.50ppb
O3
1.09ppb
SO2
4.64ppb
NO2
0.25ppm
CO
AQI 38
Good
6.53μg/m³
PM2.5
41.13μg/m³
PM10
37.88ppb
O3
1.18ppb
SO2
5.87ppb
NO2
0.21ppm
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 07:00:00 on 2025-12-28.
In the last 24 hrs, the best air quality in Durham, New Hampshire was observed at 11:00:00 on 2025-12-27.
The current air quality in Durham, New Hampshire is 41, categorized as Good based on real-time data.
The most common pollutant in Durham, New Hampshire is PM10.
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 6.994 μg/m3.
The current PM10 concentration at Durham, New Hampshire is 44.136 μg/m3.
The current carbon monoxide (CO) concentration at Durham, New Hampshire is 0.218 ppm.
The current sulfur dioxide (SO2) concentration at Durham, New Hampshire is 1.357 ppb.
The current ozone (O3) concentration at Durham, New Hampshire is 38.853 ppm.
The current nitrogen dioxide (NO2) concentration at Durham, New Hampshire is 8.33 ppb.
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