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)
44
Good
Windham, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.15 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
27.41 μg/m³
0
55
155
255
425
605+
33.87 ppb
0
55
71
86
201
201+
0.18 ppb
0
36
76
186
605
1005+
4.31 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Windham, Connecticut
Windham, Connecticut
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AQI 44
Good
8.37μg/m³
PM2.5
33.10μg/m³
PM10
31.70ppb
O3
0.22ppb
SO2
2.40ppb
NO2
0.17ppm
CO
AQI 49
Good
9.04μg/m³
PM2.5
34.73μg/m³
PM10
31.80ppb
O3
0.23ppb
SO2
2.42ppb
NO2
0.17ppm
CO
AQI 44
Good
7.78μg/m³
PM2.5
23.23μg/m³
PM10
37.29ppb
O3
0.21ppb
SO2
4.14ppb
NO2
0.20ppm
CO
AQI 44
Good
7.64μg/m³
PM2.5
28.14μg/m³
PM10
33.96ppb
O3
0.27ppb
SO2
4.59ppb
NO2
0.17ppm
CO
AQI 44
Good
7.79μg/m³
PM2.5
23.38μg/m³
PM10
35.57ppb
O3
0.21ppb
SO2
4.35ppb
NO2
0.20ppm
CO
AQI 44
Good
7.73μg/m³
PM2.5
28.25μg/m³
PM10
37.27ppb
O3
0.22ppb
SO2
4.10ppb
NO2
0.18ppm
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 09:00:00 on 2026-06-28.
In the last 24 hours, the best air quality in Windham, Connecticut was observed at 01:00:00 on 2026-06-29.
As of now, the AQI in Windham, Connecticut is 44, 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 8.048 μg/m3.
The PM10 concentration in Windham, Connecticut is 31.315 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Windham, Connecticut is 0.178 ppm.
Currently, Windham, Connecticut has a sulfur dioxide (SO2) concentration of 0.219 ppb.
The current ozone (O3) level in Windham, Connecticut at the moment is 34.428 ppm.
Nitrogen dioxide (NO2) level in Windham, Connecticut at the moment is 3.934 ppb.
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