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)
17
Good
Plainfield, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.77 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.89 μg/m³
0
55
155
255
425
605+
17.70 ppb
0
55
71
86
201
201+
0.50 ppb
0
36
76
186
605
1005+
3.13 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Plainfield, Connecticut
Plainfield, Connecticut
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AQI 16
Good
3.31μg/m³
PM2.5
8.57μg/m³
PM10
17.00ppb
O3
0.51ppb
SO2
2.98ppb
NO2
0.20ppm
CO
AQI 18
Good
3.04μg/m³
PM2.5
9.89μg/m³
PM10
19.04ppb
O3
0.48ppb
SO2
2.22ppb
NO2
0.20ppm
CO
AQI 22
Good
3.63μg/m³
PM2.5
8.79μg/m³
PM10
19.21ppb
O3
0.36ppb
SO2
3.59ppb
NO2
0.23ppm
CO
AQI 16
Good
2.95μg/m³
PM2.5
13.36μg/m³
PM10
16.98ppb
O3
0.52ppb
SO2
2.98ppb
NO2
0.22ppm
CO
AQI 20
Good
2.81μg/m³
PM2.5
8.57μg/m³
PM10
21.70ppb
O3
0.38ppb
SO2
2.88ppb
NO2
0.21ppm
CO
AQI 17
Good
2.63μg/m³
PM2.5
9.97μg/m³
PM10
18.49ppb
O3
0.41ppb
SO2
2.98ppb
NO2
0.17ppm
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 2026-11-12.
The best air quality in Plainfield, Connecticut was recorded at 05:00:00 on 2026-11-12.
The real-time air quality index in Plainfield, Connecticut is 17, 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 2.774 μg/m3.
The current PM10 levels in Plainfield, Connecticut are 11.889 μg/m3.
The current carbon monoxide (CO) level in Plainfield, Connecticut is 0.201 ppm.
The current sulfur dioxide (SO2) levels in Plainfield, Connecticut are 0.499 ppb.
The current ozone (O3) levels at Plainfield, Connecticut is 17.699 ppm.
The current nitrogen dioxide (NO2) levels at Plainfield, Connecticut is 3.13 ppb.
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