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)
33
Good
Charlton, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.29 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
8.33 μg/m³
0
55
155
255
425
605+
35.88 ppb
0
55
71
86
201
201+
0.34 ppb
0
36
76
186
605
1005+
8.13 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Moderate
Charlton, Massachusetts
Charlton, Massachusetts
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AQI 35
Good
1.73μg/m³
PM2.5
7.50μg/m³
PM10
37.74ppb
O3
0.17ppb
SO2
4.55ppb
NO2
0.20ppm
CO
AQI 34
Good
2.03μg/m³
PM2.5
8.39μg/m³
PM10
36.81ppb
O3
0.15ppb
SO2
4.48ppb
NO2
0.21ppm
CO
AQI 34
Good
1.97μg/m³
PM2.5
8.24μg/m³
PM10
37.45ppb
O3
0.17ppb
SO2
4.66ppb
NO2
0.21ppm
CO
AQI 34
Good
2.14μg/m³
PM2.5
8.83μg/m³
PM10
37.03ppb
O3
0.16ppb
SO2
4.53ppb
NO2
0.21ppm
CO
AQI 34
Good
1.64μg/m³
PM2.5
6.34μg/m³
PM10
37.13ppb
O3
0.15ppb
SO2
6.28ppb
NO2
0.20ppm
CO
AQI 33
Good
2.07μg/m³
PM2.5
8.02μg/m³
PM10
35.68ppb
O3
0.17ppb
SO2
5.33ppb
NO2
0.20ppm
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 10:00:00 on 2026-10-07.
In the last 24 hrs, the best air quality in Charlton, Massachusetts was observed at 06:00:00 on 2026-10-07.
The current air quality in Charlton, Massachusetts is 34, categorized as Good based on real-time data.
The most common pollutant in Charlton, Massachusetts is O3.
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 2.142 μg/m3.
The current PM10 concentration at Charlton, Massachusetts is 8.859 μg/m3.
The current carbon monoxide (CO) concentration at Charlton, Massachusetts is 0.201 ppm.
The current sulfur dioxide (SO2) concentration at Charlton, Massachusetts is 0.159 ppb.
The current ozone (O3) concentration at Charlton, Massachusetts is 36.537 ppm.
The current nitrogen dioxide (NO2) concentration at Charlton, Massachusetts is 4.49 ppb.
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