Stay updated with real-time air quality in Weston, 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)
20
Good
Weston, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
0.81 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
1.90 μg/m³
0
55
155
255
425
605+
22.30 ppb
0
55
71
86
201
201+
0.50 ppb
0
36
76
186
605
1005+
3.01 ppb
0
54
101
361
1250
2050+
0.28 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Weston, Connecticut
Weston, Connecticut
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AQI 19
Good
0.78μg/m³
PM2.5
1.95μg/m³
PM10
20.56ppb
O3
0.51ppb
SO2
2.78ppb
NO2
0.26ppm
CO
AQI 20
Good
0.78μg/m³
PM2.5
1.83μg/m³
PM10
22.03ppb
O3
0.50ppb
SO2
2.41ppb
NO2
0.28ppm
CO
AQI 20
Good
0.78μg/m³
PM2.5
2.00μg/m³
PM10
22.47ppb
O3
0.50ppb
SO2
2.71ppb
NO2
0.28ppm
CO
AQI 19
Good
0.71μg/m³
PM2.5
1.94μg/m³
PM10
20.75ppb
O3
0.51ppb
SO2
2.71ppb
NO2
0.27ppm
CO
AQI 20
Good
0.92μg/m³
PM2.5
2.13μg/m³
PM10
21.76ppb
O3
0.50ppb
SO2
3.19ppb
NO2
0.28ppm
CO
AQI 19
Good
0.73μg/m³
PM2.5
1.95μg/m³
PM10
21.44ppb
O3
0.52ppb
SO2
2.96ppb
NO2
0.26ppm
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 Weston, Connecticut is updated on an hourly basis.
The worst air quality in Weston, Connecticut was recorded at 03:00:00 on 2026-09-28.
The best air quality in Weston, Connecticut was recorded at 10:00:00 on 2026-09-28.
The real-time air quality index in Weston, Connecticut is 20, currently categorized as Good.
The most common pollutant in Weston, Connecticut is O3.
If the air quality in Weston, Connecticut is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Weston, Connecticut at present are 0.814 μg/m3.
The current PM10 levels in Weston, Connecticut are 1.902 μg/m3.
The current carbon monoxide (CO) level in Weston, Connecticut is 0.276 ppm.
The current sulfur dioxide (SO2) levels in Weston, Connecticut are 0.504 ppb.
The current ozone (O3) levels at Weston, Connecticut is 22.296 ppm.
The current nitrogen dioxide (NO2) levels at Weston, Connecticut is 3.007 ppb.
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