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)
58
Moderate
Charlton, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
12.77 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
53.20 μg/m³
0
55
155
255
425
605+
34.66 ppb
0
55
71
86
201
201+
0.29 ppb
0
36
76
186
605
1005+
3.40 ppb
0
54
101
361
1250
2050+
0.15 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
9.29μg/m³
PM2.5
49.22μg/m³
PM10
31.02ppb
O3
0.31ppb
SO2
3.67ppb
NO2
0.12ppm
CO
AQI 54
Moderate
10.94μg/m³
PM2.5
37.44μg/m³
PM10
29.02ppb
O3
0.28ppb
SO2
3.92ppb
NO2
0.14ppm
CO
AQI 49
Good
9.17μg/m³
PM2.5
41.21μg/m³
PM10
29.29ppb
O3
0.20ppb
SO2
3.75ppb
NO2
0.14ppm
CO
AQI 52
Moderate
10.23μg/m³
PM2.5
39.58μg/m³
PM10
29.54ppb
O3
0.29ppb
SO2
3.83ppb
NO2
0.14ppm
CO
AQI 54
Moderate
11.47μg/m³
PM2.5
37.56μg/m³
PM10
33.17ppb
O3
0.28ppb
SO2
3.65ppb
NO2
0.12ppm
CO
AQI 56
Moderate
11.82μg/m³
PM2.5
23.28μg/m³
PM10
34.61ppb
O3
0.18ppb
SO2
4.45ppb
NO2
0.14ppm
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 05:00:00 on 2026-06-29.
In the last 24 hrs, the best air quality in Charlton, Massachusetts was observed at 02:00:00 on 2026-06-29.
The current air quality in Charlton, Massachusetts is 58, categorized as Moderate 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 12.773 μg/m3.
The current PM10 concentration at Charlton, Massachusetts is 53.195 μg/m3.
The current carbon monoxide (CO) concentration at Charlton, Massachusetts is 0.148 ppm.
The current sulfur dioxide (SO2) concentration at Charlton, Massachusetts is 0.286 ppb.
The current ozone (O3) concentration at Charlton, Massachusetts is 34.664 ppm.
The current nitrogen dioxide (NO2) concentration at Charlton, Massachusetts is 3.401 ppb.
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