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)
34
Good
Marshfield, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
5.46 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
26.72 μg/m³
0
55
155
255
425
605+
36.74 ppb
0
55
71
86
201
201+
0.44 ppb
0
36
76
186
605
1005+
15.37 ppb
0
54
101
361
1250
2050+
0.41 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Marshfield, Massachusetts
Marshfield, Massachusetts
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AQI 34
Good
5.46μg/m³
PM2.5
26.73μg/m³
PM10
36.86ppb
O3
0.43ppb
SO2
15.58ppb
NO2
0.41ppm
CO
AQI 33
Good
5.48μg/m³
PM2.5
23.41μg/m³
PM10
35.56ppb
O3
0.41ppb
SO2
15.30ppb
NO2
0.41ppm
CO
AQI 34
Good
5.49μg/m³
PM2.5
26.73μg/m³
PM10
36.72ppb
O3
0.43ppb
SO2
15.68ppb
NO2
0.41ppm
CO
AQI 32
Good
5.49μg/m³
PM2.5
23.30μg/m³
PM10
34.52ppb
O3
0.44ppb
SO2
13.46ppb
NO2
0.41ppm
CO
AQI 31
Good
5.49μg/m³
PM2.5
34.44μg/m³
PM10
34.27ppb
O3
0.42ppb
SO2
13.77ppb
NO2
0.41ppm
CO
AQI 34
Good
6.19μg/m³
PM2.5
25.54μg/m³
PM10
36.81ppb
O3
0.44ppb
SO2
15.24ppb
NO2
0.41ppm
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 02:00:00 on 2025-12-28.
In the last 24 hours, the best air quality in Marshfield, Massachusetts was observed at 02:00:00 on 2025-12-28.
As of now, the AQI in Marshfield, Massachusetts is 34, 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 5.456 μg/m3.
The PM10 concentration in Marshfield, Massachusetts is 26.724 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Marshfield, Massachusetts is 0.407 ppm.
Currently, Marshfield, Massachusetts has a sulfur dioxide (SO2) concentration of 0.437 ppb.
The current ozone (O3) level in Marshfield, Massachusetts at the moment is 36.745 ppm.
Nitrogen dioxide (NO2) level in Marshfield, Massachusetts at the moment is 15.366 ppb.
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