Stay updated with real-time air quality in Cheshire, 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)
33
Good
Cheshire, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.72 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.71 μg/m³
0
55
155
255
425
605+
36.28 ppb
0
55
71
86
201
201+
0.34 ppb
0
36
76
186
605
1005+
12.99 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Cheshire, Connecticut
Cheshire, Connecticut
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AQI 33
Good
6.12μg/m³
PM2.5
13.56μg/m³
PM10
32.65ppb
O3
0.34ppb
SO2
10.85ppb
NO2
0.19ppm
CO
AQI 33
Good
6.13μg/m³
PM2.5
13.54μg/m³
PM10
32.34ppb
O3
0.34ppb
SO2
10.94ppb
NO2
0.19ppm
CO
AQI 33
Good
6.06μg/m³
PM2.5
13.84μg/m³
PM10
35.05ppb
O3
0.33ppb
SO2
10.98ppb
NO2
0.19ppm
CO
AQI 33
Good
5.51μg/m³
PM2.5
13.29μg/m³
PM10
32.79ppb
O3
0.37ppb
SO2
10.31ppb
NO2
0.19ppm
CO
AQI 31
Good
5.45μg/m³
PM2.5
13.39μg/m³
PM10
33.14ppb
O3
0.35ppb
SO2
10.87ppb
NO2
0.19ppm
CO
AQI 30
Good
5.40μg/m³
PM2.5
13.00μg/m³
PM10
31.58ppb
O3
0.36ppb
SO2
10.57ppb
NO2
0.19ppm
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 Cheshire, Connecticut is updated every hour for accuracy.
In the past 24 hours, the air quality in Cheshire, Connecticut was at its worst at 10:00:00 on 2026-05-13.
In the last 24 hours, the best air quality in Cheshire, Connecticut was observed at 12:00:00 on 2026-05-13.
As of now, the AQI in Cheshire, Connecticut is 33, indicating Good conditions.
Cheshire, Connecticut air has the highest levels of O3.
Poor air quality in Cheshire, Connecticut means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Cheshire, Connecticut are currently 5.722 μg/m3.
The PM10 concentration in Cheshire, Connecticut is 14.71 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Cheshire, Connecticut is 0.213 ppm.
Currently, Cheshire, Connecticut has a sulfur dioxide (SO2) concentration of 0.335 ppb.
The current ozone (O3) level in Cheshire, Connecticut at the moment is 36.285 ppm.
Nitrogen dioxide (NO2) level in Cheshire, Connecticut at the moment is 12.988 ppb.
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