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)
44
Good
Weston, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.76 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
16.89 μg/m³
0
55
155
255
425
605+
46.62 ppb
0
55
71
86
201
201+
0.40 ppb
0
36
76
186
605
1005+
2.95 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Weston, Connecticut
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AQI 40
Good
5.10μg/m³
PM2.5
20.88μg/m³
PM10
42.97ppb
O3
0.35ppb
SO2
5.75ppb
NO2
0.23ppm
CO
AQI 44
Good
5.56μg/m³
PM2.5
17.25μg/m³
PM10
46.97ppb
O3
0.41ppb
SO2
1.67ppb
NO2
0.22ppm
CO
AQI 44
Good
5.66μg/m³
PM2.5
18.07μg/m³
PM10
46.71ppb
O3
0.40ppb
SO2
2.40ppb
NO2
0.23ppm
CO
AQI 42
Good
5.18μg/m³
PM2.5
16.49μg/m³
PM10
44.63ppb
O3
0.35ppb
SO2
6.78ppb
NO2
0.24ppm
CO
AQI 44
Good
5.54μg/m³
PM2.5
15.74μg/m³
PM10
47.26ppb
O3
0.45ppb
SO2
4.13ppb
NO2
0.21ppm
CO
AQI 42
Good
6.02μg/m³
PM2.5
18.41μg/m³
PM10
44.67ppb
O3
0.33ppb
SO2
7.14ppb
NO2
0.24ppm
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 10:00:00 on 2026-03-29.
The best air quality in Weston, Connecticut was recorded at 06:00:00 on 2026-03-29.
The real-time air quality index in Weston, Connecticut is 44, 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 5.76 μg/m3.
The current PM10 levels in Weston, Connecticut are 16.885 μg/m3.
The current carbon monoxide (CO) level in Weston, Connecticut is 0.221 ppm.
The current sulfur dioxide (SO2) levels in Weston, Connecticut are 0.4 ppb.
The current ozone (O3) levels at Weston, Connecticut is 46.623 ppm.
The current nitrogen dioxide (NO2) levels at Weston, Connecticut is 2.95 ppb.
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