Stay updated with real-time air quality in Fitchburg, 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)
43
Good
Fitchburg, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
7.18 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
22.26 μg/m³
0
55
155
255
425
605+
46.42 ppb
0
55
71
86
201
201+
0.82 ppb
0
36
76
186
605
1005+
3.66 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Fitchburg, Wisconsin
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AQI 43
Good
7.24μg/m³
PM2.5
21.77μg/m³
PM10
46.46ppb
O3
0.82ppb
SO2
3.57ppb
NO2
0.20ppm
CO
AQI 44
Good
7.42μg/m³
PM2.5
23.93μg/m³
PM10
46.50ppb
O3
0.89ppb
SO2
3.46ppb
NO2
0.20ppm
CO
AQI 44
Good
7.68μg/m³
PM2.5
24.50μg/m³
PM10
47.22ppb
O3
0.87ppb
SO2
3.52ppb
NO2
0.20ppm
CO
AQI 43
Good
7.40μg/m³
PM2.5
20.75μg/m³
PM10
46.28ppb
O3
0.82ppb
SO2
3.62ppb
NO2
0.20ppm
CO
AQI 44
Good
7.67μg/m³
PM2.5
24.20μg/m³
PM10
47.12ppb
O3
0.81ppb
SO2
3.60ppb
NO2
0.20ppm
CO
AQI 43
Good
7.03μg/m³
PM2.5
22.95μg/m³
PM10
46.21ppb
O3
0.81ppb
SO2
3.79ppb
NO2
0.20ppm
CO
Air quality and pollutant data for Wisconsin, 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 Fitchburg, Wisconsin is updated every hour for accuracy.
In the past 24 hours, the air quality in Fitchburg, Wisconsin was at its worst at 12:00:00 on 2026-04-23.
In the last 24 hours, the best air quality in Fitchburg, Wisconsin was observed at 09:00:00 on 2026-04-23.
As of now, the AQI in Fitchburg, Wisconsin is 43, indicating Good conditions.
Fitchburg, Wisconsin air has the highest levels of O3.
Poor air quality in Fitchburg, Wisconsin means it's advisable to stay indoors and wear a mask for your protection.
PM2.5 levels in Fitchburg, Wisconsin are currently 7.176 μg/m3.
The PM10 concentration in Fitchburg, Wisconsin is 22.256 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Fitchburg, Wisconsin is 0.2 ppm.
Currently, Fitchburg, Wisconsin has a sulfur dioxide (SO2) concentration of 0.82 ppb.
The current ozone (O3) level in Fitchburg, Wisconsin at the moment is 46.417 ppm.
Nitrogen dioxide (NO2) level in Fitchburg, Wisconsin at the moment is 3.656 ppb.
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