Stay updated with real-time air quality in Dedham, 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)
40
Good
Dedham, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
2.68 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
11.16 μg/m³
0
55
155
255
425
605+
42.64 ppb
0
55
71
86
201
201+
0.85 ppb
0
36
76
186
605
1005+
3.29 ppb
0
54
101
361
1250
2050+
0.21 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Dedham, Massachusetts
Dedham, Massachusetts
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AQI 39
Good
2.64μg/m³
PM2.5
10.41μg/m³
PM10
42.50ppb
O3
0.87ppb
SO2
3.11ppb
NO2
0.20ppm
CO
AQI 41
Good
2.74μg/m³
PM2.5
10.71μg/m³
PM10
43.54ppb
O3
0.90ppb
SO2
3.13ppb
NO2
0.20ppm
CO
AQI 39
Good
2.77μg/m³
PM2.5
10.67μg/m³
PM10
42.07ppb
O3
0.76ppb
SO2
3.91ppb
NO2
0.21ppm
CO
AQI 39
Good
2.72μg/m³
PM2.5
10.75μg/m³
PM10
41.75ppb
O3
0.93ppb
SO2
4.18ppb
NO2
0.20ppm
CO
AQI 42
Good
2.79μg/m³
PM2.5
10.91μg/m³
PM10
45.18ppb
O3
0.82ppb
SO2
2.12ppb
NO2
0.20ppm
CO
AQI 37
Good
2.62μg/m³
PM2.5
10.84μg/m³
PM10
40.31ppb
O3
1.09ppb
SO2
4.82ppb
NO2
0.18ppm
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 Dedham, Massachusetts is updated every hour.
The worst air quality in Dedham, Massachusetts in the last 24 hours was observed at 03:00:00 on 2026-06-15.
In the last 24 hrs, the best air quality in Dedham, Massachusetts was observed at 03:00:00 on 2026-06-15.
The current air quality in Dedham, Massachusetts is 41, categorized as Good based on real-time data.
The most common pollutant in Dedham, Massachusetts is O3.
If the air quality in Dedham, Massachusetts is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Dedham, Massachusetts is 2.735 μg/m3.
The current PM10 concentration at Dedham, Massachusetts is 10.694 μg/m3.
The current carbon monoxide (CO) concentration at Dedham, Massachusetts is 0.2 ppm.
The current sulfur dioxide (SO2) concentration at Dedham, Massachusetts is 0.898 ppb.
The current ozone (O3) concentration at Dedham, Massachusetts is 43.579 ppm.
The current nitrogen dioxide (NO2) concentration at Dedham, Massachusetts is 3.084 ppb.
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