Stay updated with real-time air quality in Plainfield, 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)
20
Good
Plainfield, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
0.74 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
3.64 μg/m³
0
55
155
255
425
605+
22.39 ppb
0
55
71
86
201
201+
0.46 ppb
0
36
76
186
605
1005+
6.46 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Plainfield, Connecticut
Plainfield, Connecticut
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AQI 20
Good
0.81μg/m³
PM2.5
4.24μg/m³
PM10
22.42ppb
O3
0.47ppb
SO2
6.27ppb
NO2
0.28ppm
CO
AQI 20
Good
1.27μg/m³
PM2.5
3.63μg/m³
PM10
22.31ppb
O3
0.44ppb
SO2
6.57ppb
NO2
0.28ppm
CO
AQI 20
Good
1.18μg/m³
PM2.5
3.46μg/m³
PM10
22.36ppb
O3
0.47ppb
SO2
5.92ppb
NO2
0.28ppm
CO
AQI 20
Good
1.32μg/m³
PM2.5
5.88μg/m³
PM10
21.87ppb
O3
0.47ppb
SO2
5.74ppb
NO2
0.28ppm
CO
AQI 20
Good
1.26μg/m³
PM2.5
3.70μg/m³
PM10
22.09ppb
O3
0.47ppb
SO2
5.64ppb
NO2
0.28ppm
CO
AQI 21
Good
0.65μg/m³
PM2.5
2.16μg/m³
PM10
23.08ppb
O3
0.40ppb
SO2
5.33ppb
NO2
0.28ppm
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 Plainfield, Connecticut is updated on an hourly basis.
The worst air quality in Plainfield, Connecticut was recorded at 03:00:00 on 2026-09-28.
The best air quality in Plainfield, Connecticut was recorded at 09:00:00 on 2026-09-28.
The real-time air quality index in Plainfield, Connecticut is 20, currently categorized as Good.
The most common pollutant in Plainfield, Connecticut is O3.
If the air quality in Plainfield, Connecticut is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Plainfield, Connecticut at present are 0.745 μg/m3.
The current PM10 levels in Plainfield, Connecticut are 3.636 μg/m3.
The current carbon monoxide (CO) level in Plainfield, Connecticut is 0.282 ppm.
The current sulfur dioxide (SO2) levels in Plainfield, Connecticut are 0.455 ppb.
The current ozone (O3) levels at Plainfield, Connecticut is 22.393 ppm.
The current nitrogen dioxide (NO2) levels at Plainfield, Connecticut is 6.46 ppb.
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