Stay updated with real-time air quality in Newtown, 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)
60
Moderate
Newtown, Connecticut
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
14.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
62.44 μg/m³
0
55
155
255
425
605+
11.53 ppb
0
55
71
86
201
201+
0.30 ppb
0
36
76
186
605
1005+
26.41 ppb
0
54
101
361
1250
2050+
0.39 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Newtown, Connecticut
Newtown, Connecticut
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AQI 60
Moderate
14.40μg/m³
PM2.5
20.72μg/m³
PM10
10.83ppb
O3
0.31ppb
SO2
25.56ppb
NO2
0.40ppm
CO
AQI 60
Moderate
14.38μg/m³
PM2.5
19.49μg/m³
PM10
11.08ppb
O3
0.32ppb
SO2
25.65ppb
NO2
0.40ppm
CO
AQI 60
Moderate
13.80μg/m³
PM2.5
42.03μg/m³
PM10
11.63ppb
O3
0.31ppb
SO2
26.66ppb
NO2
0.38ppm
CO
AQI 60
Moderate
14.30μg/m³
PM2.5
18.09μg/m³
PM10
11.25ppb
O3
0.32ppb
SO2
25.83ppb
NO2
0.40ppm
CO
AQI 60
Moderate
14.04μg/m³
PM2.5
62.26μg/m³
PM10
11.61ppb
O3
0.28ppb
SO2
26.44ppb
NO2
0.40ppm
CO
AQI 60
Moderate
14.05μg/m³
PM2.5
60.82μg/m³
PM10
11.35ppb
O3
0.33ppb
SO2
25.98ppb
NO2
0.39ppm
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 Newtown, Connecticut is updated on an hourly basis.
The worst air quality in Newtown, Connecticut was recorded at 12:00:00 on 2025-12-29.
The best air quality in Newtown, Connecticut was recorded at 04:00:00 on 2025-12-28.
The real-time air quality index in Newtown, Connecticut is 60, currently categorized as Moderate.
The most common pollutant in Newtown, Connecticut is PM2.5.
If the air quality in Newtown, Connecticut is poor, limit outdoor activities and use a mask to safeguard your health.
The measured PM2.5 levels in Newtown, Connecticut at present are 14.068 μg/m3.
The current PM10 levels in Newtown, Connecticut are 62.438 μg/m3.
The current carbon monoxide (CO) level in Newtown, Connecticut is 0.391 ppm.
The current sulfur dioxide (SO2) levels in Newtown, Connecticut are 0.296 ppb.
The current ozone (O3) levels at Newtown, Connecticut is 11.532 ppm.
The current nitrogen dioxide (NO2) levels at Newtown, Connecticut is 26.408 ppb.
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