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)
42
Good
Cheshire, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.42 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.36 μg/m³
0
55
155
255
425
605+
45.12 ppb
0
55
71
86
201
201+
0.29 ppb
0
36
76
186
605
1005+
5.03 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Cheshire, Connecticut
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AQI 44
Good
4.98μg/m³
PM2.5
18.25μg/m³
PM10
46.65ppb
O3
0.28ppb
SO2
5.11ppb
NO2
0.18ppm
CO
AQI 44
Good
4.99μg/m³
PM2.5
14.16μg/m³
PM10
46.98ppb
O3
0.28ppb
SO2
4.50ppb
NO2
0.19ppm
CO
AQI 43
Good
5.64μg/m³
PM2.5
14.52μg/m³
PM10
46.17ppb
O3
0.28ppb
SO2
5.40ppb
NO2
0.21ppm
CO
AQI 42
Good
5.74μg/m³
PM2.5
14.74μg/m³
PM10
45.35ppb
O3
0.28ppb
SO2
4.44ppb
NO2
0.20ppm
CO
AQI 42
Good
5.70μg/m³
PM2.5
14.53μg/m³
PM10
45.40ppb
O3
0.28ppb
SO2
4.71ppb
NO2
0.21ppm
CO
AQI 42
Good
5.80μg/m³
PM2.5
14.99μg/m³
PM10
45.41ppb
O3
0.28ppb
SO2
4.44ppb
NO2
0.21ppm
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 08:00:00 on 2026-03-29.
In the last 24 hours, the best air quality in Cheshire, Connecticut was observed at 07:00:00 on 2026-03-29.
As of now, the AQI in Cheshire, Connecticut is 42, 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 5.423 μg/m3.
The PM10 concentration in Cheshire, Connecticut is 14.363 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Cheshire, Connecticut is 0.176 ppm.
Currently, Cheshire, Connecticut has a sulfur dioxide (SO2) concentration of 0.286 ppb.
The current ozone (O3) level in Cheshire, Connecticut at the moment is 45.124 ppm.
Nitrogen dioxide (NO2) level in Cheshire, Connecticut at the moment is 5.025 ppb.
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