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)
54
Moderate
Newtown, Connecticut
Last updated: ... (Local time)
Good
Fine
Moderate
Poor
Very poor
Hazardous
10.81 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.93 μg/m³
0
55
155
255
425
605+
23.50 ppb
0
55
71
86
201
201+
0.30 ppb
0
36
76
186
605
1005+
10.56 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Newtown, Connecticut
Newtown, Connecticut
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AQI 52
Moderate
10.39μg/m³
PM2.5
21.13μg/m³
PM10
44.66ppb
O3
1.15ppb
SO2
2.46ppb
NO2
0.33ppm
CO
AQI 52
Moderate
10.45μg/m³
PM2.5
20.28μg/m³
PM10
44.88ppb
O3
1.15ppb
SO2
2.43ppb
NO2
0.33ppm
CO
AQI 48
Good
8.00μg/m³
PM2.5
51.90μg/m³
PM10
45.83ppb
O3
1.03ppb
SO2
2.03ppb
NO2
0.30ppm
CO
AQI 52
Moderate
10.40μg/m³
PM2.5
18.14μg/m³
PM10
43.09ppb
O3
1.15ppb
SO2
2.45ppb
NO2
0.33ppm
CO
AQI 56
Moderate
11.68μg/m³
PM2.5
27.86μg/m³
PM10
45.58ppb
O3
1.04ppb
SO2
2.03ppb
NO2
0.32ppm
CO
AQI 44
Good
8.36μg/m³
PM2.5
32.22μg/m³
PM10
41.49ppb
O3
1.01ppb
SO2
2.05ppb
NO2
0.30ppm
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 03:00:00 on 2025-07-29.
The best air quality in Newtown, Connecticut was recorded at 11:00:00 on 2025-07-29.
The real-time air quality index in Newtown, Connecticut is 52, 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 10.073 μg/m3.
The current PM10 levels in Newtown, Connecticut are 48.563 μg/m3.
The current carbon monoxide (CO) level in Newtown, Connecticut is 0.316 ppm.
The current sulfur dioxide (SO2) levels in Newtown, Connecticut are 1.014 ppb.
The current ozone (O3) levels at Newtown, Connecticut is 48.5 ppm.
The current nitrogen dioxide (NO2) levels at Newtown, Connecticut is 3.45 ppb.
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