Stay updated with real-time air quality in Windham, 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)
52
Moderate
Windham, New Hampshire
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.61 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.87 μg/m³
0
55
155
255
425
605+
17.99 ppb
0
55
71
86
201
201+
0.47 ppb
0
36
76
186
605
1005+
7.79 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Windham, New Hampshire
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AQI 52
Moderate
9.89μg/m³
PM2.5
39.73μg/m³
PM10
42.99ppb
O3
0.61ppb
SO2
5.63ppb
NO2
0.29ppm
CO
AQI 52
Moderate
10.07μg/m³
PM2.5
16.98μg/m³
PM10
38.11ppb
O3
0.63ppb
SO2
4.02ppb
NO2
0.39ppm
CO
AQI 52
Moderate
9.99μg/m³
PM2.5
22.99μg/m³
PM10
38.78ppb
O3
0.62ppb
SO2
4.41ppb
NO2
0.36ppm
CO
AQI 52
Moderate
9.78μg/m³
PM2.5
40.98μg/m³
PM10
33.22ppb
O3
0.60ppb
SO2
4.43ppb
NO2
0.30ppm
CO
AQI 52
Moderate
9.83μg/m³
PM2.5
41.38μg/m³
PM10
43.18ppb
O3
0.60ppb
SO2
5.74ppb
NO2
0.28ppm
CO
AQI 52
Moderate
9.82μg/m³
PM2.5
41.73μg/m³
PM10
43.18ppb
O3
0.60ppb
SO2
5.73ppb
NO2
0.28ppm
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 Windham, New Hampshire is updated every hour.
The worst air quality in Windham, New Hampshire in the last 24 hours was observed at 03:00:00 on 2025-07-30.
In the last 24 hrs, the best air quality in Windham, New Hampshire was observed at 07:00:00 on 2025-07-30.
The current air quality in Windham, New Hampshire is 52, categorized as Moderate based on real-time data.
The most common pollutant in Windham, New Hampshire is PM2.5.
If the air quality in Windham, New Hampshire is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Windham, New Hampshire is 9.877 μg/m3.
The current PM10 concentration at Windham, New Hampshire is 29.062 μg/m3.
The current carbon monoxide (CO) concentration at Windham, New Hampshire is 0.336 ppm.
The current sulfur dioxide (SO2) concentration at Windham, New Hampshire is 0.614 ppb.
The current ozone (O3) concentration at Windham, New Hampshire is 39.211 ppm.
The current nitrogen dioxide (NO2) concentration at Windham, New Hampshire is 4.86 ppb.
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