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)
54
Moderate
Windham, New Hampshire
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
11.23 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.58 μg/m³
0
55
155
255
425
605+
20.45 ppb
0
55
71
86
201
201+
0.94 ppb
0
36
76
186
605
1005+
6.05 ppb
0
54
101
361
1250
2050+
0.15 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Windham, New Hampshire
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AQI 54
Moderate
11.23μg/m³
PM2.5
42.03μg/m³
PM10
21.43ppb
O3
0.86ppb
SO2
6.67ppb
NO2
0.19ppm
CO
AQI 52
Moderate
9.74μg/m³
PM2.5
21.49μg/m³
PM10
19.98ppb
O3
1.02ppb
SO2
5.95ppb
NO2
0.11ppm
CO
AQI 52
Moderate
10.37μg/m³
PM2.5
26.41μg/m³
PM10
20.10ppb
O3
0.98ppb
SO2
6.02ppb
NO2
0.13ppm
CO
AQI 62
Moderate
15.06μg/m³
PM2.5
36.58μg/m³
PM10
25.02ppb
O3
0.90ppb
SO2
7.00ppb
NO2
0.18ppm
CO
AQI 56
Moderate
11.77μg/m³
PM2.5
45.98μg/m³
PM10
22.74ppb
O3
0.83ppb
SO2
6.60ppb
NO2
0.20ppm
CO
AQI 56
Moderate
11.86μg/m³
PM2.5
46.75μg/m³
PM10
22.93ppb
O3
0.82ppb
SO2
6.57ppb
NO2
0.20ppm
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 10:00:00 on 2025-06-06.
In the last 24 hrs, the best air quality in Windham, New Hampshire was observed at 02:00:00 on 2025-06-07.
The current air quality in Windham, New Hampshire is 54, 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 11.229 μg/m3.
The current PM10 concentration at Windham, New Hampshire is 31.583 μg/m3.
The current carbon monoxide (CO) concentration at Windham, New Hampshire is 0.152 ppm.
The current sulfur dioxide (SO2) concentration at Windham, New Hampshire is 0.938 ppb.
The current ozone (O3) concentration at Windham, New Hampshire is 20.451 ppm.
The current nitrogen dioxide (NO2) concentration at Windham, New Hampshire is 6.048 ppb.
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