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)
23
Good
Newtown, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
4.00 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
13.59 μg/m³
0
55
155
255
425
605+
25.33 ppb
0
55
71
86
201
201+
0.61 ppb
0
36
76
186
605
1005+
4.70 ppb
0
54
101
361
1250
2050+
0.24 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Newtown, Connecticut
Newtown, Connecticut
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AQI 22
Good
4.22μg/m³
PM2.5
8.64μg/m³
PM10
23.08ppb
O3
0.66ppb
SO2
4.75ppb
NO2
0.31ppm
CO
AQI 22
Good
4.23μg/m³
PM2.5
8.23μg/m³
PM10
23.17ppb
O3
0.68ppb
SO2
4.64ppb
NO2
0.31ppm
CO
AQI 27
Good
4.82μg/m³
PM2.5
12.62μg/m³
PM10
23.79ppb
O3
0.55ppb
SO2
4.78ppb
NO2
0.30ppm
CO
AQI 22
Good
4.29μg/m³
PM2.5
8.02μg/m³
PM10
23.00ppb
O3
0.69ppb
SO2
4.65ppb
NO2
0.31ppm
CO
AQI 27
Good
4.81μg/m³
PM2.5
13.07μg/m³
PM10
23.68ppb
O3
0.46ppb
SO2
5.01ppb
NO2
0.32ppm
CO
AQI 27
Good
5.15μg/m³
PM2.5
12.96μg/m³
PM10
24.32ppb
O3
0.53ppb
SO2
5.48ppb
NO2
0.32ppm
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 11:00:00 on 2025-07-13.
The best air quality in Newtown, Connecticut was recorded at 12:00:00 on 2025-07-14.
The real-time air quality index in Newtown, Connecticut is 23, currently categorized as Good.
The most common pollutant in Newtown, Connecticut is O3.
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 4.005 μg/m3.
The current PM10 levels in Newtown, Connecticut are 13.585 μg/m3.
The current carbon monoxide (CO) level in Newtown, Connecticut is 0.242 ppm.
The current sulfur dioxide (SO2) levels in Newtown, Connecticut are 0.612 ppb.
The current ozone (O3) levels at Newtown, Connecticut is 25.33 ppm.
The current nitrogen dioxide (NO2) levels at Newtown, Connecticut is 4.7 ppb.
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