Stay updated with real-time air quality in Trumbull, 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)
22
Good
Trumbull, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.28 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.85 μg/m³
0
55
155
255
425
605+
21.42 ppb
0
55
71
86
201
201+
0.57 ppb
0
36
76
186
605
1005+
4.87 ppb
0
54
101
361
1250
2050+
0.29 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Trumbull, Connecticut
Trumbull, Connecticut
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AQI 22
Good
4.39μg/m³
PM2.5
9.04μg/m³
PM10
20.59ppb
O3
0.58ppb
SO2
4.33ppb
NO2
0.29ppm
CO
AQI 22
Good
4.26μg/m³
PM2.5
10.03μg/m³
PM10
21.91ppb
O3
0.58ppb
SO2
4.34ppb
NO2
0.29ppm
CO
AQI 22
Good
3.95μg/m³
PM2.5
10.80μg/m³
PM10
19.16ppb
O3
0.50ppb
SO2
7.17ppb
NO2
0.28ppm
CO
AQI 22
Good
4.13μg/m³
PM2.5
10.31μg/m³
PM10
18.81ppb
O3
0.56ppb
SO2
4.43ppb
NO2
0.29ppm
CO
AQI 22
Good
4.12μg/m³
PM2.5
11.17μg/m³
PM10
21.25ppb
O3
0.55ppb
SO2
6.07ppb
NO2
0.28ppm
CO
AQI 22
Good
4.09μg/m³
PM2.5
10.74μg/m³
PM10
21.54ppb
O3
0.58ppb
SO2
5.30ppb
NO2
0.29ppm
CO
Air quality measurements for Connecticut, USA meet strict US EPA standards. These measurements are collected from reliable sources, including satellites and ground-based monitoring systems. Advanced algorithms and machine learning techniques are applied to the data, factoring in variables such as traffic and population density, to ensure precision and reliability.
Source: Ambee Data Sources
Air quality data for Trumbull, Connecticut is updated on an hourly basis.
The worst air quality in Trumbull, Connecticut was recorded at 08:00:00 on 2026-11-12.
The best air quality in Trumbull, Connecticut was recorded at 11:00:00 on 2026-11-12.
The real-time air quality index in Trumbull, Connecticut is 22, currently categorized as Good.
The most common pollutant in Trumbull, Connecticut is PM2.5.
If the air quality in Trumbull, Connecticut is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Trumbull, Connecticut at present are 4.277 μg/m3.
The current PM10 levels in Trumbull, Connecticut are 9.851 μg/m3.
The current carbon monoxide (CO) level in Trumbull, Connecticut is 0.293 ppm.
The current sulfur dioxide (SO2) levels in Trumbull, Connecticut are 0.574 ppb.
The current ozone (O3) levels at Trumbull, Connecticut is 21.42 ppm.
The current nitrogen dioxide (NO2) levels at Trumbull, Connecticut is 4.865 ppb.
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