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

Good
Fine
Moderate
Poor
Very poor
Hazardous
6.35 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.00 μg/m³
0
55
155
255
425
605+
25.97 ppb
0
55
71
86
201
201+
0.18 ppb
0
36
76
186
605
1005+
4.86 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Cromwell, Connecticut
Cromwell, Connecticut
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AQI 38
Good
6.66μg/m³
PM2.5
22.03μg/m³
PM10
26.01ppb
O3
0.35ppb
SO2
4.70ppb
NO2
0.21ppm
CO
AQI 38
Good
6.63μg/m³
PM2.5
22.50μg/m³
PM10
28.61ppb
O3
0.34ppb
SO2
4.95ppb
NO2
0.21ppm
CO
AQI 33
Good
6.05μg/m³
PM2.5
15.04μg/m³
PM10
27.49ppb
O3
0.52ppb
SO2
5.03ppb
NO2
0.21ppm
CO
AQI 33
Good
6.08μg/m³
PM2.5
15.05μg/m³
PM10
28.70ppb
O3
0.34ppb
SO2
4.50ppb
NO2
0.21ppm
CO
AQI 38
Good
7.41μg/m³
PM2.5
15.34μg/m³
PM10
25.12ppb
O3
0.50ppb
SO2
6.30ppb
NO2
0.20ppm
CO
AQI 38
Good
7.43μg/m³
PM2.5
16.02μg/m³
PM10
25.32ppb
O3
0.49ppb
SO2
6.69ppb
NO2
0.20ppm
CO
Air quality measurements for Connecticut, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Cromwell, Connecticut is updated on an hourly basis.
The worst air quality in Cromwell, Connecticut was recorded at 02:00:00 on 2026-08-14.
The best air quality in Cromwell, Connecticut was recorded at 04:00:00 on 2026-08-14.
The real-time air quality index in Cromwell, Connecticut is 33, currently categorized as Good.
The most common pollutant in Cromwell, Connecticut is PM2.5.
If the air quality in Cromwell, Connecticut is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Cromwell, Connecticut at present are 6.353 μg/m3.
The current PM10 levels in Cromwell, Connecticut are 16.004 μg/m3.
The current carbon monoxide (CO) level in Cromwell, Connecticut is 0.207 ppm.
The current sulfur dioxide (SO2) levels in Cromwell, Connecticut are 0.184 ppb.
The current ozone (O3) levels at Cromwell, Connecticut is 25.973 ppm.
The current nitrogen dioxide (NO2) levels at Cromwell, Connecticut is 4.855 ppb.
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