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)
29
Good
Marshfield, Massachusetts
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.14 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
14.20 μg/m³
0
55
155
255
425
605+
31.23 ppb
0
55
71
86
201
201+
0.58 ppb
0
36
76
186
605
1005+
2.84 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 30
Good
4.21μg/m³
PM2.5
15.88μg/m³
PM10
32.10ppb
O3
0.57ppb
SO2
2.82ppb
NO2
0.20ppm
CO
AQI 26
Good
4.23μg/m³
PM2.5
16.88μg/m³
PM10
28.31ppb
O3
0.56ppb
SO2
2.80ppb
NO2
0.20ppm
CO
AQI 28
Good
4.23μg/m³
PM2.5
18.14μg/m³
PM10
30.42ppb
O3
0.56ppb
SO2
2.81ppb
NO2
0.20ppm
CO
AQI 28
Good
4.20μg/m³
PM2.5
16.68μg/m³
PM10
30.13ppb
O3
0.58ppb
SO2
2.87ppb
NO2
0.20ppm
CO
AQI 27
Good
4.23μg/m³
PM2.5
16.99μg/m³
PM10
29.29ppb
O3
0.57ppb
SO2
2.82ppb
NO2
0.20ppm
CO
AQI 29
Good
4.19μg/m³
PM2.5
17.33μg/m³
PM10
31.01ppb
O3
0.60ppb
SO2
2.92ppb
NO2
0.20ppm
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 08:00:00 on 2026-08-13.
In the last 24 hours, the best air quality in Marshfield, Massachusetts was observed at 04:00:00 on 2026-08-14.
As of now, the AQI in Marshfield, Massachusetts is 29, 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 4.137 μg/m3.
The PM10 concentration in Marshfield, Massachusetts is 14.196 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Marshfield, Massachusetts is 0.202 ppm.
Currently, Marshfield, Massachusetts has a sulfur dioxide (SO2) concentration of 0.578 ppb.
The current ozone (O3) level in Marshfield, Massachusetts at the moment is 31.233 ppm.
Nitrogen dioxide (NO2) level in Marshfield, Massachusetts at the moment is 2.839 ppb.
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