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)
79
Moderate
Fitchburg, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
24.18 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
57.98 μg/m³
0
55
155
255
425
605+
16.16 ppb
0
55
71
86
201
201+
0.30 ppb
0
36
76
186
605
1005+
9.65 ppb
0
54
101
361
1250
2050+
0.27 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Fitchburg, Wisconsin
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AQI 79
Moderate
23.61μg/m³
PM2.5
54.96μg/m³
PM10
15.24ppb
O3
0.27ppb
SO2
7.05ppb
NO2
0.27ppm
CO
AQI 67
Moderate
18.36μg/m³
PM2.5
32.28μg/m³
PM10
16.29ppb
O3
0.25ppb
SO2
7.08ppb
NO2
0.27ppm
CO
AQI 67
Moderate
17.68μg/m³
PM2.5
48.47μg/m³
PM10
18.14ppb
O3
0.28ppb
SO2
7.06ppb
NO2
0.27ppm
CO
AQI 79
Moderate
23.51μg/m³
PM2.5
46.24μg/m³
PM10
15.35ppb
O3
0.27ppb
SO2
7.04ppb
NO2
0.27ppm
CO
AQI 64
Moderate
16.32μg/m³
PM2.5
44.76μg/m³
PM10
13.43ppb
O3
0.35ppb
SO2
7.13ppb
NO2
0.27ppm
CO
AQI 79
Moderate
24.23μg/m³
PM2.5
65.02μg/m³
PM10
15.51ppb
O3
0.27ppb
SO2
7.08ppb
NO2
0.27ppm
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 04:00:00 on 2026-03-04.
In the last 24 hours, the best air quality in Fitchburg, Wisconsin was observed at 11:00:00 on 2026-03-04.
As of now, the AQI in Fitchburg, Wisconsin is 79, indicating Moderate conditions.
Fitchburg, Wisconsin air has the highest levels of PM2.5.
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 24.176 μg/m3.
The PM10 concentration in Fitchburg, Wisconsin is 57.983 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Fitchburg, Wisconsin is 0.268 ppm.
Currently, Fitchburg, Wisconsin has a sulfur dioxide (SO2) concentration of 0.297 ppb.
The current ozone (O3) level in Fitchburg, Wisconsin at the moment is 16.155 ppm.
Nitrogen dioxide (NO2) level in Fitchburg, Wisconsin at the moment is 9.653 ppb.
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