Stay updated with real-time air quality in Marshfield, Wisconsin 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)
24
Good
Marshfield, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.03 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
24.82 μg/m³
0
55
155
255
425
605+
25.77 ppb
0
55
71
86
201
201+
0.86 ppb
0
36
76
186
605
1005+
8.48 ppb
0
54
101
361
1250
2050+
0.34 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Marshfield, Wisconsin
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AQI 22
Good
4.12μg/m³
PM2.5
10.73μg/m³
PM10
7.04ppb
O3
0.68ppb
SO2
13.45ppb
NO2
0.30ppm
CO
AQI 12
Good
2.41μg/m³
PM2.5
8.23μg/m³
PM10
6.05ppb
O3
0.79ppb
SO2
13.07ppb
NO2
0.30ppm
CO
AQI 12
Good
2.21μg/m³
PM2.5
7.68μg/m³
PM10
8.03ppb
O3
0.73ppb
SO2
13.26ppb
NO2
0.37ppm
CO
AQI 16
Good
2.71μg/m³
PM2.5
9.55μg/m³
PM10
7.35ppb
O3
1.04ppb
SO2
13.58ppb
NO2
0.29ppm
CO
AQI 13
Good
2.27μg/m³
PM2.5
7.42μg/m³
PM10
6.04ppb
O3
0.73ppb
SO2
13.64ppb
NO2
0.35ppm
CO
AQI 33
Good
5.63μg/m³
PM2.5
29.49μg/m³
PM10
4.08ppb
O3
1.13ppb
SO2
12.13ppb
NO2
0.60ppm
CO
The air quality data for Wisconsin, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Marshfield, Wisconsin are available every hour.
Marshfield, Wisconsin experienced its worst air quality at 10:00:00, 2025-10-23.
The best air quality in Marshfield, Wisconsin was observed at 09:00:00 on 2025-10-24.
The air quality in Marshfield, Wisconsin right now is Good, with an AQI of 12.
In Marshfield, Wisconsin, NO2 is the most frequently found pollutant.
When air quality in Marshfield, Wisconsin is compromised, staying indoors and wearing a mask can reduce health risks.
Marshfield, Wisconsin currently has a PM2.5 concentration of 2.328 μg/m3.
Marshfield, Wisconsin currently has a PM10 concentration of 7.575 μg/m3.
The current carbon monoxide (CO) level in Marshfield, Wisconsin is 0.387 ppm.
The current sulfur dioxide (SO2) concentration in Marshfield, Wisconsin is 0.662 ppb.
Marshfield, Wisconsin currently has an ozone (O3) concentration of 9.317 ppm.
The current level of nitrogen dioxide (NO2) in Marshfield, Wisconsin is 13.253 ppb.
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