Stay updated with real-time air quality in Windham, Connecticut 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)
22
Good
Windham, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.63 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.79 μg/m³
0
55
155
255
425
605+
19.21 ppb
0
55
71
86
201
201+
0.36 ppb
0
36
76
186
605
1005+
3.59 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Windham, Connecticut
Windham, Connecticut
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AQI 23
Good
3.75μg/m³
PM2.5
8.69μg/m³
PM10
24.77ppb
O3
0.38ppb
SO2
3.06ppb
NO2
0.24ppm
CO
AQI 23
Good
3.81μg/m³
PM2.5
10.13μg/m³
PM10
24.75ppb
O3
0.38ppb
SO2
3.09ppb
NO2
0.24ppm
CO
AQI 16
Good
3.31μg/m³
PM2.5
8.57μg/m³
PM10
17.00ppb
O3
0.51ppb
SO2
2.98ppb
NO2
0.20ppm
CO
AQI 22
Good
4.01μg/m³
PM2.5
10.23μg/m³
PM10
21.33ppb
O3
0.37ppb
SO2
3.73ppb
NO2
0.24ppm
CO
AQI 17
Good
2.77μg/m³
PM2.5
11.89μg/m³
PM10
17.70ppb
O3
0.50ppb
SO2
3.13ppb
NO2
0.20ppm
CO
AQI 16
Good
2.95μg/m³
PM2.5
13.36μg/m³
PM10
16.98ppb
O3
0.52ppb
SO2
2.98ppb
NO2
0.22ppm
CO
Air quality and pollutant data for Connecticut, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Windham, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Windham, Connecticut was at its worst at 03:00:00 on 2026-11-12.
In the last 24 hours, the best air quality in Windham, Connecticut was observed at 05:00:00 on 2026-11-12.
As of now, the AQI in Windham, Connecticut is 22, indicating Good conditions.
Windham, Connecticut air has the highest levels of PM2.5.
Poor air quality in Windham, Connecticut means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Windham, Connecticut are currently 3.628 μg/m3.
The PM10 concentration in Windham, Connecticut is 8.795 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Windham, Connecticut is 0.23 ppm.
Currently, Windham, Connecticut has a sulfur dioxide (SO2) concentration of 0.36 ppb.
The current ozone (O3) level in Windham, Connecticut at the moment is 19.215 ppm.
Nitrogen dioxide (NO2) level in Windham, Connecticut at the moment is 3.588 ppb.
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