Stay updated with real-time air quality in Charlton, Massachusetts 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)
38
Good
Charlton, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.26 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
29.16 μg/m³
0
55
155
255
425
605+
26.27 ppb
0
55
71
86
201
201+
0.18 ppb
0
36
76
186
605
1005+
7.75 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Charlton, Massachusetts
Charlton, Massachusetts
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AQI 49
Good
9.04μg/m³
PM2.5
27.75μg/m³
PM10
15.91ppb
O3
0.28ppb
SO2
7.81ppb
NO2
0.53ppm
CO
AQI 38
Good
7.42μg/m³
PM2.5
28.14μg/m³
PM10
15.52ppb
O3
0.29ppb
SO2
8.14ppb
NO2
0.54ppm
CO
AQI 49
Good
8.97μg/m³
PM2.5
28.23μg/m³
PM10
10.76ppb
O3
0.28ppb
SO2
8.14ppb
NO2
0.58ppm
CO
AQI 38
Good
7.41μg/m³
PM2.5
28.34μg/m³
PM10
15.61ppb
O3
0.29ppb
SO2
7.56ppb
NO2
0.57ppm
CO
AQI 38
Good
7.16μg/m³
PM2.5
28.18μg/m³
PM10
21.13ppb
O3
0.29ppb
SO2
9.13ppb
NO2
0.49ppm
CO
AQI 38
Good
7.38μg/m³
PM2.5
18.73μg/m³
PM10
16.68ppb
O3
0.30ppb
SO2
12.53ppb
NO2
0.44ppm
CO
Air quality data and pollutant measurements for Massachusetts, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Charlton, Massachusetts is updated every hour.
The worst air quality in Charlton, Massachusetts in the last 24 hours was observed at 11:00:00 on 2025-11-03.
In the last 24 hrs, the best air quality in Charlton, Massachusetts was observed at 03:00:00 on 2025-11-02.
The current air quality in Charlton, Massachusetts is 49, categorized as Good based on real-time data.
The most common pollutant in Charlton, Massachusetts is PM2.5.
If the air quality in Charlton, Massachusetts is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Charlton, Massachusetts is 8.606 μg/m3.
The current PM10 concentration at Charlton, Massachusetts is 28.276 μg/m3.
The current carbon monoxide (CO) concentration at Charlton, Massachusetts is 0.515 ppm.
The current sulfur dioxide (SO2) concentration at Charlton, Massachusetts is 0.289 ppb.
The current ozone (O3) concentration at Charlton, Massachusetts is 14.618 ppm.
The current nitrogen dioxide (NO2) concentration at Charlton, Massachusetts is 7.212 ppb.
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