Stay updated with real-time air quality in Medfield, 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)
23
Good
Medfield, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.80 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
17.91 μg/m³
0
55
155
255
425
605+
25.03 ppb
0
55
71
86
201
201+
0.43 ppb
0
36
76
186
605
1005+
3.17 ppb
0
54
101
361
1250
2050+
0.18 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Medfield, Massachusetts
Medfield, Massachusetts
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AQI 22
Good
4.16μg/m³
PM2.5
15.85μg/m³
PM10
24.49ppb
O3
0.45ppb
SO2
2.11ppb
NO2
0.17ppm
CO
AQI 23
Good
3.92μg/m³
PM2.5
17.91μg/m³
PM10
25.06ppb
O3
0.40ppb
SO2
3.40ppb
NO2
0.18ppm
CO
AQI 28
Good
3.92μg/m³
PM2.5
16.81μg/m³
PM10
30.43ppb
O3
0.54ppb
SO2
2.02ppb
NO2
0.16ppm
CO
AQI 25
Good
3.77μg/m³
PM2.5
17.83μg/m³
PM10
26.53ppb
O3
0.38ppb
SO2
3.58ppb
NO2
0.18ppm
CO
AQI 29
Good
4.11μg/m³
PM2.5
17.63μg/m³
PM10
30.99ppb
O3
0.54ppb
SO2
1.88ppb
NO2
0.16ppm
CO
AQI 24
Good
3.50μg/m³
PM2.5
14.95μg/m³
PM10
25.99ppb
O3
0.50ppb
SO2
3.16ppb
NO2
0.17ppm
CO
The air quality data for Massachusetts, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Medfield, Massachusetts are available every hour.
Medfield, Massachusetts experienced its worst air quality at 07:00:00, 2026-08-13.
The best air quality in Medfield, Massachusetts was observed at 04:00:00 on 2026-08-14.
The air quality in Medfield, Massachusetts right now is Good, with an AQI of 23.
In Medfield, Massachusetts, O3 is the most frequently found pollutant.
When air quality in Medfield, Massachusetts is compromised, staying indoors and wearing a mask can reduce health risks.
Medfield, Massachusetts currently has a PM2.5 concentration of 3.803 μg/m3.
Medfield, Massachusetts currently has a PM10 concentration of 17.905 μg/m3.
The current carbon monoxide (CO) level in Medfield, Massachusetts is 0.177 ppm.
The current sulfur dioxide (SO2) concentration in Medfield, Massachusetts is 0.426 ppb.
Medfield, Massachusetts currently has an ozone (O3) concentration of 25.034 ppm.
The current level of nitrogen dioxide (NO2) in Medfield, Massachusetts is 3.167 ppb.
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