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)
51
Moderate
Plainfield, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
9.14 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
56.24 μg/m³
0
55
155
255
425
605+
46.34 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
2.73 ppb
0
54
101
361
1250
2050+
0.23 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Plainfield, Connecticut
Plainfield, Connecticut
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AQI 52
Moderate
9.55μg/m³
PM2.5
45.08μg/m³
PM10
35.35ppb
O3
0.27ppb
SO2
6.61ppb
NO2
0.26ppm
CO
AQI 61
Moderate
10.12μg/m³
PM2.5
74.90μg/m³
PM10
34.82ppb
O3
0.26ppb
SO2
6.57ppb
NO2
0.25ppm
CO
AQI 52
Moderate
9.66μg/m³
PM2.5
31.60μg/m³
PM10
40.16ppb
O3
0.28ppb
SO2
7.71ppb
NO2
0.47ppm
CO
AQI 49
Good
9.45μg/m³
PM2.5
42.29μg/m³
PM10
39.13ppb
O3
0.28ppb
SO2
10.21ppb
NO2
0.47ppm
CO
AQI 52
Moderate
10.23μg/m³
PM2.5
25.98μg/m³
PM10
40.53ppb
O3
0.28ppb
SO2
9.34ppb
NO2
0.42ppm
CO
AQI 58
Moderate
10.14μg/m³
PM2.5
70.39μg/m³
PM10
35.29ppb
O3
0.27ppb
SO2
5.79ppb
NO2
0.24ppm
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 2025-07-30.
The best air quality in Plainfield, Connecticut was recorded at 02:00:00 on 2025-07-30.
The real-time air quality index in Plainfield, Connecticut is 52, currently categorized as Moderate.
The most common pollutant in Plainfield, Connecticut is PM2.5.
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 10.311 μg/m3.
The current PM10 levels in Plainfield, Connecticut are 46.318 μg/m3.
The current carbon monoxide (CO) level in Plainfield, Connecticut is 0.274 ppm.
The current sulfur dioxide (SO2) levels in Plainfield, Connecticut are 0.265 ppb.
The current ozone (O3) levels at Plainfield, Connecticut is 41.83 ppm.
The current nitrogen dioxide (NO2) levels at Plainfield, Connecticut is 4.381 ppb.
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