Stay updated with real-time air quality in Marshfield, 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)
30
Good
Marshfield, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.22 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
15.89 μg/m³
0
55
155
255
425
605+
32.24 ppb
0
55
71
86
201
201+
0.35 ppb
0
36
76
186
605
1005+
5.24 ppb
0
54
101
361
1250
2050+
0.17 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Marshfield, Massachusetts
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AQI 28
Good
3.68μg/m³
PM2.5
11.88μg/m³
PM10
29.65ppb
O3
0.35ppb
SO2
5.50ppb
NO2
0.17ppm
CO
AQI 28
Good
3.68μg/m³
PM2.5
11.82μg/m³
PM10
30.31ppb
O3
0.30ppb
SO2
5.46ppb
NO2
0.17ppm
CO
AQI 26
Good
3.44μg/m³
PM2.5
9.25μg/m³
PM10
27.57ppb
O3
0.35ppb
SO2
5.47ppb
NO2
0.17ppm
CO
AQI 31
Good
3.39μg/m³
PM2.5
14.64μg/m³
PM10
32.58ppb
O3
0.34ppb
SO2
5.58ppb
NO2
0.17ppm
CO
AQI 30
Good
3.52μg/m³
PM2.5
18.71μg/m³
PM10
32.29ppb
O3
0.30ppb
SO2
5.55ppb
NO2
0.17ppm
CO
AQI 29
Good
4.53μg/m³
PM2.5
17.66μg/m³
PM10
30.90ppb
O3
0.35ppb
SO2
5.24ppb
NO2
0.17ppm
CO
Air quality and pollutant data for Massachusetts, USA are sourced from ground-based monitors and satellites, adhering to US EPA standards. Machine learning and advanced algorithms enhance the data by incorporating local variables like traffic and population density, ensuring high accuracy and dependability.
Source: Ambee Data Sources
The air quality information for Marshfield, Massachusetts is updated every hour for accuracy.
In the past 24 hours, the air quality in Marshfield, Massachusetts was at its worst at 04:00:00 on 2026-02-11.
In the last 24 hours, the best air quality in Marshfield, Massachusetts was observed at 04:00:00 on 2026-02-12.
As of now, the AQI in Marshfield, Massachusetts is 30, indicating Good conditions.
Marshfield, Massachusetts air has the highest levels of O3.
Poor air quality in Marshfield, Massachusetts means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Marshfield, Massachusetts are currently 3.218 μg/m3.
The PM10 concentration in Marshfield, Massachusetts is 15.891 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Marshfield, Massachusetts is 0.172 ppm.
Currently, Marshfield, Massachusetts has a sulfur dioxide (SO2) concentration of 0.351 ppb.
The current ozone (O3) level in Marshfield, Massachusetts at the moment is 32.239 ppm.
Nitrogen dioxide (NO2) level in Marshfield, Massachusetts at the moment is 5.241 ppb.
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