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)
44
Good
Plainfield, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.23 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.96 μg/m³
0
55
155
255
425
605+
18.16 ppb
0
55
71
86
201
201+
0.47 ppb
0
36
76
186
605
1005+
16.95 ppb
0
54
101
361
1250
2050+
0.39 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Plainfield, Connecticut
Plainfield, Connecticut
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AQI 49
Good
9.07μg/m³
PM2.5
39.41μg/m³
PM10
24.31ppb
O3
0.45ppb
SO2
16.07ppb
NO2
0.41ppm
CO
AQI 49
Good
9.00μg/m³
PM2.5
40.31μg/m³
PM10
25.20ppb
O3
0.47ppb
SO2
13.32ppb
NO2
0.43ppm
CO
AQI 44
Good
8.01μg/m³
PM2.5
18.48μg/m³
PM10
25.03ppb
O3
0.47ppb
SO2
18.25ppb
NO2
0.41ppm
CO
AQI 44
Good
8.25μg/m³
PM2.5
17.90μg/m³
PM10
23.28ppb
O3
0.47ppb
SO2
15.99ppb
NO2
0.41ppm
CO
AQI 44
Good
8.34μg/m³
PM2.5
16.57μg/m³
PM10
27.17ppb
O3
0.43ppb
SO2
16.65ppb
NO2
0.42ppm
CO
AQI 49
Good
9.10μg/m³
PM2.5
43.50μg/m³
PM10
20.43ppb
O3
0.48ppb
SO2
15.67ppb
NO2
0.45ppm
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 11:00:00 on 2025-12-13.
The best air quality in Plainfield, Connecticut was recorded at 03:00:00 on 2025-12-13.
The real-time air quality index in Plainfield, Connecticut is 44, currently categorized as Good.
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 8.229 μg/m3.
The current PM10 levels in Plainfield, Connecticut are 29.956 μg/m3.
The current carbon monoxide (CO) level in Plainfield, Connecticut is 0.394 ppm.
The current sulfur dioxide (SO2) levels in Plainfield, Connecticut are 0.473 ppb.
The current ozone (O3) levels at Plainfield, Connecticut is 18.165 ppm.
The current nitrogen dioxide (NO2) levels at Plainfield, Connecticut is 16.948 ppb.
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