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)
23
Good
Plainfield, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
3.68 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.71 μg/m³
0
55
155
255
425
605+
25.08 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
7.84 ppb
0
54
101
361
1250
2050+
0.26 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Plainfield, Connecticut
Plainfield, Connecticut
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AQI 31
Good
4.72μg/m³
PM2.5
21.42μg/m³
PM10
33.14ppb
O3
0.24ppb
SO2
3.53ppb
NO2
0.20ppm
CO
AQI 34
Good
5.36μg/m³
PM2.5
20.93μg/m³
PM10
37.21ppb
O3
0.32ppb
SO2
3.12ppb
NO2
0.21ppm
CO
AQI 32
Good
4.92μg/m³
PM2.5
21.42μg/m³
PM10
35.19ppb
O3
0.17ppb
SO2
2.87ppb
NO2
0.21ppm
CO
AQI 32
Good
4.78μg/m³
PM2.5
16.81μg/m³
PM10
34.72ppb
O3
0.18ppb
SO2
3.16ppb
NO2
0.20ppm
CO
AQI 33
Good
5.49μg/m³
PM2.5
14.33μg/m³
PM10
35.71ppb
O3
0.22ppb
SO2
3.32ppb
NO2
0.20ppm
CO
AQI 31
Good
4.97μg/m³
PM2.5
22.05μg/m³
PM10
33.52ppb
O3
0.36ppb
SO2
4.18ppb
NO2
0.19ppm
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 2025-09-11.
The best air quality in Plainfield, Connecticut was recorded at 10:00:00 on 2025-09-12.
The real-time air quality index in Plainfield, Connecticut is 31, 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 4.68 μg/m3.
The current PM10 levels in Plainfield, Connecticut are 22.213 μg/m3.
The current carbon monoxide (CO) level in Plainfield, Connecticut is 0.205 ppm.
The current sulfur dioxide (SO2) levels in Plainfield, Connecticut are 0.25 ppb.
The current ozone (O3) levels at Plainfield, Connecticut is 32.806 ppm.
The current nitrogen dioxide (NO2) levels at Plainfield, Connecticut is 3.52 ppb.
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