Stay updated with real-time air quality in Plainville, 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)
20
Good
Plainville, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
0.87 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
3.49 μg/m³
0
55
155
255
425
605+
22.38 ppb
0
55
71
86
201
201+
0.74 ppb
0
36
76
186
605
1005+
4.18 ppb
0
54
101
361
1250
2050+
0.25 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Plainville, Connecticut
Plainville, Connecticut
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AQI 21
Good
1.23μg/m³
PM2.5
3.00μg/m³
PM10
22.53ppb
O3
0.67ppb
SO2
3.97ppb
NO2
0.27ppm
CO
AQI 19
Good
0.96μg/m³
PM2.5
3.14μg/m³
PM10
21.13ppb
O3
0.75ppb
SO2
3.96ppb
NO2
0.25ppm
CO
AQI 19
Good
0.86μg/m³
PM2.5
3.07μg/m³
PM10
21.19ppb
O3
0.67ppb
SO2
3.99ppb
NO2
0.26ppm
CO
AQI 20
Good
0.89μg/m³
PM2.5
3.47μg/m³
PM10
22.16ppb
O3
0.74ppb
SO2
4.19ppb
NO2
0.25ppm
CO
AQI 21
Good
1.23μg/m³
PM2.5
3.00μg/m³
PM10
22.53ppb
O3
0.67ppb
SO2
3.97ppb
NO2
0.27ppm
CO
AQI 20
Good
1.03μg/m³
PM2.5
2.42μg/m³
PM10
21.80ppb
O3
0.67ppb
SO2
4.35ppb
NO2
0.29ppm
CO
Air quality data and pollutant measurements for Connecticut, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Plainville, Connecticut is updated every hour.
The worst air quality in Plainville, Connecticut in the last 24 hours was observed at 03:00:00 on 2026-09-28.
In the last 24 hrs, the best air quality in Plainville, Connecticut was observed at 10:00:00 on 2026-09-28.
The current air quality in Plainville, Connecticut is 20, categorized as Good based on real-time data.
The most common pollutant in Plainville, Connecticut is O3.
If the air quality in Plainville, Connecticut is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Plainville, Connecticut is 0.868 μg/m3.
The current PM10 concentration at Plainville, Connecticut is 3.491 μg/m3.
The current carbon monoxide (CO) concentration at Plainville, Connecticut is 0.254 ppm.
The current sulfur dioxide (SO2) concentration at Plainville, Connecticut is 0.742 ppb.
The current ozone (O3) concentration at Plainville, Connecticut is 22.379 ppm.
The current nitrogen dioxide (NO2) concentration at Plainville, Connecticut is 4.177 ppb.
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