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)
54
Moderate
Marshfield, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
11.02 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
48.05 μg/m³
0
55
155
255
425
605+
39.23 ppb
0
55
71
86
201
201+
0.80 ppb
0
36
76
186
605
1005+
2.88 ppb
0
54
101
361
1250
2050+
0.16 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Marshfield, Massachusetts
Marshfield, Massachusetts
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AQI 54
Moderate
11.11μg/m³
PM2.5
46.18μg/m³
PM10
38.17ppb
O3
0.78ppb
SO2
2.87ppb
NO2
0.16ppm
CO
AQI 54
Moderate
11.10μg/m³
PM2.5
46.41μg/m³
PM10
35.16ppb
O3
0.64ppb
SO2
2.85ppb
NO2
0.16ppm
CO
AQI 52
Moderate
9.73μg/m³
PM2.5
42.13μg/m³
PM10
36.95ppb
O3
0.76ppb
SO2
2.86ppb
NO2
0.16ppm
CO
AQI 49
Good
8.93μg/m³
PM2.5
33.28μg/m³
PM10
35.92ppb
O3
0.82ppb
SO2
2.88ppb
NO2
0.16ppm
CO
AQI 52
Moderate
9.70μg/m³
PM2.5
42.07μg/m³
PM10
34.65ppb
O3
0.67ppb
SO2
2.87ppb
NO2
0.16ppm
CO
AQI 49
Good
8.99μg/m³
PM2.5
37.68μg/m³
PM10
38.04ppb
O3
0.83ppb
SO2
4.05ppb
NO2
0.16ppm
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 06:00:00 on 2026-06-29.
In the last 24 hours, the best air quality in Marshfield, Massachusetts was observed at 01:00:00 on 2026-06-29.
As of now, the AQI in Marshfield, Massachusetts is 54, indicating Moderate conditions.
Marshfield, Massachusetts air has the highest levels of PM2.5.
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 11.021 μg/m3.
The PM10 concentration in Marshfield, Massachusetts is 48.051 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Marshfield, Massachusetts is 0.159 ppm.
Currently, Marshfield, Massachusetts has a sulfur dioxide (SO2) concentration of 0.795 ppb.
The current ozone (O3) level in Marshfield, Massachusetts at the moment is 39.232 ppm.
Nitrogen dioxide (NO2) level in Marshfield, Massachusetts at the moment is 2.877 ppb.
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