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)
24
Good
Plainfield, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.17 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
7.09 μg/m³
0
55
155
255
425
605+
26.20 ppb
0
55
71
86
201
201+
0.23 ppb
0
36
76
186
605
1005+
4.08 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Plainfield, Connecticut
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AQI 26
Good
2.72μg/m³
PM2.5
8.94μg/m³
PM10
27.98ppb
O3
0.26ppb
SO2
4.35ppb
NO2
0.19ppm
CO
AQI 26
Good
1.64μg/m³
PM2.5
4.57μg/m³
PM10
28.30ppb
O3
0.26ppb
SO2
4.54ppb
NO2
0.22ppm
CO
AQI 24
Good
2.70μg/m³
PM2.5
9.35μg/m³
PM10
26.10ppb
O3
0.22ppb
SO2
4.16ppb
NO2
0.18ppm
CO
AQI 22
Good
2.97μg/m³
PM2.5
5.45μg/m³
PM10
23.83ppb
O3
0.22ppb
SO2
4.27ppb
NO2
0.18ppm
CO
AQI 23
Good
2.56μg/m³
PM2.5
5.68μg/m³
PM10
25.10ppb
O3
0.27ppb
SO2
4.48ppb
NO2
0.19ppm
CO
AQI 27
Good
1.88μg/m³
PM2.5
6.13μg/m³
PM10
29.17ppb
O3
0.28ppb
SO2
6.03ppb
NO2
0.25ppm
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 2026-02-11.
The best air quality in Plainfield, Connecticut was recorded at 01:00:00 on 2026-02-12.
The real-time air quality index in Plainfield, Connecticut is 27, 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 2.132 μg/m3.
The current PM10 levels in Plainfield, Connecticut are 8.607 μg/m3.
The current carbon monoxide (CO) level in Plainfield, Connecticut is 0.195 ppm.
The current sulfur dioxide (SO2) levels in Plainfield, Connecticut are 0.256 ppb.
The current ozone (O3) levels at Plainfield, Connecticut is 28.758 ppm.
The current nitrogen dioxide (NO2) levels at Plainfield, Connecticut is 4.47 ppb.
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