Stay updated with real-time air quality in Mansfield, 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)
37
Good
Mansfield, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.09 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.59 μg/m³
0
55
155
255
425
605+
40.15 ppb
0
55
71
86
201
201+
0.24 ppb
0
36
76
186
605
1005+
10.24 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Mansfield, Connecticut
Mansfield, Connecticut
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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 37
Good
4.99μg/m³
PM2.5
17.97μg/m³
PM10
40.37ppb
O3
0.26ppb
SO2
14.74ppb
NO2
0.26ppm
CO
AQI 38
Good
4.94μg/m³
PM2.5
15.59μg/m³
PM10
41.45ppb
O3
0.25ppb
SO2
8.93ppb
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 37
Good
4.65μg/m³
PM2.5
17.85μg/m³
PM10
39.98ppb
O3
0.23ppb
SO2
9.65ppb
NO2
0.23ppm
CO
The air quality data for Connecticut, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Mansfield, Connecticut are available every hour.
Mansfield, Connecticut experienced its worst air quality at 01:00:00, 2026-05-14.
The best air quality in Mansfield, Connecticut was observed at 12:00:00 on 2026-05-13.
The air quality in Mansfield, Connecticut right now is Good, with an AQI of 37.
In Mansfield, Connecticut, O3 is the most frequently found pollutant.
When air quality in Mansfield, Connecticut is compromised, staying indoors and wearing a mask can reduce health risks.
Mansfield, Connecticut currently has a PM2.5 concentration of 5.093 μg/m3.
Mansfield, Connecticut currently has a PM10 concentration of 15.589 μg/m3.
The current carbon monoxide (CO) level in Mansfield, Connecticut is 0.285 ppm.
The current sulfur dioxide (SO2) concentration in Mansfield, Connecticut is 0.241 ppb.
Mansfield, Connecticut currently has an ozone (O3) concentration of 40.145 ppm.
The current level of nitrogen dioxide (NO2) in Mansfield, Connecticut is 10.236 ppb.
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