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)
29
Good
Fitchburg, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.98 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
31.08 μg/m³
0
55
155
255
425
605+
15.84 ppb
0
55
71
86
201
201+
0.79 ppb
0
36
76
186
605
1005+
3.56 ppb
0
54
101
361
1250
2050+
0.13 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Fitchburg, Wisconsin
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AQI 30
Good
5.00μg/m³
PM2.5
32.06μg/m³
PM10
15.71ppb
O3
0.79ppb
SO2
3.56ppb
NO2
0.13ppm
CO
AQI 27
Good
4.87μg/m³
PM2.5
24.97μg/m³
PM10
22.02ppb
O3
0.75ppb
SO2
3.43ppb
NO2
0.13ppm
CO
AQI 27
Good
4.82μg/m³
PM2.5
28.54μg/m³
PM10
22.05ppb
O3
0.78ppb
SO2
3.55ppb
NO2
0.13ppm
CO
AQI 31
Good
5.03μg/m³
PM2.5
33.70μg/m³
PM10
15.85ppb
O3
0.78ppb
SO2
3.55ppb
NO2
0.13ppm
CO
AQI 27
Good
4.74μg/m³
PM2.5
27.92μg/m³
PM10
22.79ppb
O3
0.92ppb
SO2
3.95ppb
NO2
0.13ppm
CO
AQI 27
Good
4.92μg/m³
PM2.5
29.30μg/m³
PM10
16.16ppb
O3
0.79ppb
SO2
3.56ppb
NO2
0.13ppm
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 05:00:00 on 2026-01-22.
In the last 24 hours, the best air quality in Fitchburg, Wisconsin was observed at 03:00:00 on 2026-01-22.
As of now, the AQI in Fitchburg, Wisconsin is 29, indicating Good conditions.
Fitchburg, Wisconsin air has the highest levels of PM10.
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 4.977 μg/m3.
The PM10 concentration in Fitchburg, Wisconsin is 31.08 μg/m3 at the moment.
The current carbon monoxide (CO) concentration in Fitchburg, Wisconsin is 0.132 ppm.
Currently, Fitchburg, Wisconsin has a sulfur dioxide (SO2) concentration of 0.786 ppb.
The current ozone (O3) level in Fitchburg, Wisconsin at the moment is 15.839 ppm.
Nitrogen dioxide (NO2) level in Fitchburg, Wisconsin at the moment is 3.564 ppb.
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