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)
56
Moderate
Plainville, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.64 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
41.93 μg/m³
0
55
155
255
425
605+
33.41 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
4.80 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Plainville, Connecticut
Plainville, Connecticut
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AQI 56
Moderate
12.04μg/m³
PM2.5
37.85μg/m³
PM10
39.77ppb
O3
0.28ppb
SO2
4.42ppb
NO2
0.15ppm
CO
AQI 56
Moderate
11.61μg/m³
PM2.5
41.76μg/m³
PM10
35.11ppb
O3
0.29ppb
SO2
4.88ppb
NO2
0.18ppm
CO
AQI 56
Moderate
11.96μg/m³
PM2.5
18.58μg/m³
PM10
35.24ppb
O3
0.27ppb
SO2
4.24ppb
NO2
0.16ppm
CO
AQI 56
Moderate
11.92μg/m³
PM2.5
41.82μg/m³
PM10
37.36ppb
O3
0.29ppb
SO2
5.10ppb
NO2
0.18ppm
CO
AQI 56
Moderate
12.04μg/m³
PM2.5
37.85μg/m³
PM10
39.77ppb
O3
0.28ppb
SO2
4.42ppb
NO2
0.15ppm
CO
AQI 56
Moderate
12.36μg/m³
PM2.5
22.07μg/m³
PM10
40.60ppb
O3
0.27ppb
SO2
4.29ppb
NO2
0.13ppm
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 2026-06-29.
In the last 24 hrs, the best air quality in Plainville, Connecticut was observed at 10:00:00 on 2026-06-29.
The current air quality in Plainville, Connecticut is 56, categorized as Moderate based on real-time data.
The most common pollutant in Plainville, Connecticut is PM2.5.
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 11.64 μg/m3.
The current PM10 concentration at Plainville, Connecticut is 41.928 μg/m3.
The current carbon monoxide (CO) concentration at Plainville, Connecticut is 0.172 ppm.
The current sulfur dioxide (SO2) concentration at Plainville, Connecticut is 0.285 ppb.
The current ozone (O3) concentration at Plainville, Connecticut is 33.413 ppm.
The current nitrogen dioxide (NO2) concentration at Plainville, Connecticut is 4.805 ppb.
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