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)
33
Good
Tolland, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.44 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.28 μg/m³
0
55
155
255
425
605+
35.53 ppb
0
55
71
86
201
201+
0.23 ppb
0
36
76
186
605
1005+
10.35 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
High
Tolland, Connecticut
Tolland, Connecticut
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AQI 37
Good
4.65μg/m³
PM2.5
17.85μg/m³
PM10
39.98ppb
O3
0.23ppb
SO2
9.65ppb
NO2
0.23ppm
CO
AQI 38
Good
5.00μg/m³
PM2.5
15.52μg/m³
PM10
41.24ppb
O3
0.26ppb
SO2
8.85ppb
NO2
0.25ppm
CO
AQI 34
Good
5.04μg/m³
PM2.5
17.70μg/m³
PM10
36.74ppb
O3
0.24ppb
SO2
9.28ppb
NO2
0.23ppm
CO
AQI 38
Good
4.24μg/m³
PM2.5
17.80μg/m³
PM10
40.91ppb
O3
0.25ppb
SO2
8.59ppb
NO2
0.24ppm
CO
AQI 38
Good
4.30μg/m³
PM2.5
17.86μg/m³
PM10
40.66ppb
O3
0.23ppb
SO2
8.69ppb
NO2
0.23ppm
CO
AQI 40
Good
5.20μg/m³
PM2.5
15.63μg/m³
PM10
42.88ppb
O3
0.26ppb
SO2
8.67ppb
NO2
0.25ppm
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 2026-05-13.
In the last 24 hrs, the best air quality in Tolland, Connecticut was observed at 02:00:00 on 2026-05-13.
The current air quality in Tolland, Connecticut is 33, 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 4.442 μg/m3.
The current PM10 concentration at Tolland, Connecticut is 15.281 μg/m3.
The current carbon monoxide (CO) concentration at Tolland, Connecticut is 0.27 ppm.
The current sulfur dioxide (SO2) concentration at Tolland, Connecticut is 0.235 ppb.
The current ozone (O3) concentration at Tolland, Connecticut is 35.534 ppm.
The current nitrogen dioxide (NO2) concentration at Tolland, Connecticut is 10.348 ppb.
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