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)
28
Good
Marshfield, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.35 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
20.28 μg/m³
0
55
155
255
425
605+
29.68 ppb
0
55
71
86
201
201+
0.45 ppb
0
36
76
186
605
1005+
3.63 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Marshfield, Massachusetts
Marshfield, Massachusetts
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AQI 29
Good
3.95μg/m³
PM2.5
6.24μg/m³
PM10
31.46ppb
O3
0.40ppb
SO2
6.67ppb
NO2
0.26ppm
CO
AQI 27
Good
4.18μg/m³
PM2.5
9.48μg/m³
PM10
29.14ppb
O3
0.39ppb
SO2
6.70ppb
NO2
0.26ppm
CO
AQI 28
Good
4.02μg/m³
PM2.5
6.18μg/m³
PM10
30.20ppb
O3
0.40ppb
SO2
6.68ppb
NO2
0.26ppm
CO
AQI 28
Good
4.04μg/m³
PM2.5
6.29μg/m³
PM10
29.71ppb
O3
0.40ppb
SO2
6.59ppb
NO2
0.27ppm
CO
AQI 28
Good
4.72μg/m³
PM2.5
13.28μg/m³
PM10
29.77ppb
O3
0.39ppb
SO2
6.63ppb
NO2
0.27ppm
CO
AQI 30
Good
3.90μg/m³
PM2.5
6.37μg/m³
PM10
32.50ppb
O3
0.41ppb
SO2
6.68ppb
NO2
0.26ppm
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 2025-11-03.
In the last 24 hours, the best air quality in Marshfield, Massachusetts was observed at 02:00:00 on 2025-11-03.
As of now, the AQI in Marshfield, Massachusetts is 31, 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 3.867 μg/m3.
The PM10 concentration in Marshfield, Massachusetts is 6.288 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Marshfield, Massachusetts is 0.26 ppm.
Currently, Marshfield, Massachusetts has a sulfur dioxide (SO2) concentration of 0.402 ppb.
The current ozone (O3) level in Marshfield, Massachusetts at the moment is 32.599 ppm.
Nitrogen dioxide (NO2) level in Marshfield, Massachusetts at the moment is 6.66 ppb.
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