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

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.74 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
19.38 μg/m³
0
55
155
255
425
605+
48.33 ppb
0
55
71
86
201
201+
0.28 ppb
0
36
76
186
605
1005+
5.47 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Tolland, Connecticut
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AQI 45
Good
4.88μg/m³
PM2.5
18.33μg/m³
PM10
48.95ppb
O3
0.29ppb
SO2
5.29ppb
NO2
0.19ppm
CO
AQI 44
Good
4.73μg/m³
PM2.5
14.78μg/m³
PM10
47.52ppb
O3
0.27ppb
SO2
4.59ppb
NO2
0.20ppm
CO
AQI 44
Good
5.54μg/m³
PM2.5
19.35μg/m³
PM10
47.60ppb
O3
0.29ppb
SO2
5.00ppb
NO2
0.19ppm
CO
AQI 45
Good
4.72μg/m³
PM2.5
18.59μg/m³
PM10
49.25ppb
O3
0.28ppb
SO2
4.89ppb
NO2
0.19ppm
CO
AQI 45
Good
4.74μg/m³
PM2.5
18.87μg/m³
PM10
49.24ppb
O3
0.29ppb
SO2
4.96ppb
NO2
0.19ppm
CO
AQI 44
Good
4.72μg/m³
PM2.5
18.53μg/m³
PM10
47.62ppb
O3
0.26ppb
SO2
4.44ppb
NO2
0.20ppm
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 Tolland, Connecticut is updated every hour.
The worst air quality in Tolland, Connecticut in the last 24 hours was observed at 10:00:00 on 2026-03-29.
In the last 24 hrs, the best air quality in Tolland, Connecticut was observed at 01:00:00 on 2026-03-29.
The current air quality in Tolland, Connecticut is 44, categorized as Good based on real-time data.
The most common pollutant in Tolland, Connecticut is O3.
If the air quality in Tolland, Connecticut is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Tolland, Connecticut is 4.743 μg/m3.
The current PM10 concentration at Tolland, Connecticut is 19.376 μg/m3.
The current carbon monoxide (CO) concentration at Tolland, Connecticut is 0.197 ppm.
The current sulfur dioxide (SO2) concentration at Tolland, Connecticut is 0.28 ppb.
The current ozone (O3) concentration at Tolland, Connecticut is 48.332 ppm.
The current nitrogen dioxide (NO2) concentration at Tolland, Connecticut is 5.475 ppb.
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