Stay updated with real-time air quality in Hartland, 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)
40
Good
Hartland, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
4.85 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
21.74 μg/m³
0
55
155
255
425
605+
43.46 ppb
0
55
71
86
201
201+
0.71 ppb
0
36
76
186
605
1005+
4.56 ppb
0
54
101
361
1250
2050+
0.12 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Hartland, Wisconsin
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AQI 40
Good
4.85μg/m³
PM2.5
17.07μg/m³
PM10
42.90ppb
O3
0.75ppb
SO2
4.54ppb
NO2
0.11ppm
CO
AQI 39
Good
4.91μg/m³
PM2.5
13.27μg/m³
PM10
41.98ppb
O3
0.85ppb
SO2
4.47ppb
NO2
0.11ppm
CO
AQI 41
Good
5.70μg/m³
PM2.5
27.44μg/m³
PM10
43.50ppb
O3
0.66ppb
SO2
4.58ppb
NO2
0.12ppm
CO
AQI 39
Good
4.90μg/m³
PM2.5
13.07μg/m³
PM10
41.99ppb
O3
0.85ppb
SO2
4.47ppb
NO2
0.11ppm
CO
AQI 38
Good
4.81μg/m³
PM2.5
20.35μg/m³
PM10
41.11ppb
O3
0.71ppb
SO2
4.58ppb
NO2
0.11ppm
CO
AQI 38
Good
4.86μg/m³
PM2.5
16.55μg/m³
PM10
41.36ppb
O3
0.90ppb
SO2
4.38ppb
NO2
0.11ppm
CO
Air quality data and pollutant measurements for Wisconsin, USA adhere to strict US EPA standards. The data is collected from multiple reliable sources, including satellites and ground-based monitoring stations. This data is further analyzed and enhanced using machine learning and advanced algorithms that factor in elements such as traffic and population density, ensuring accurate and reliable results.
Source: Ambee Data Sources
The air quality for Hartland, Wisconsin is updated every hour.
The worst air quality in Hartland, Wisconsin in the last 24 hours was observed at 03:00:00 on 2026-07-23.
In the last 24 hrs, the best air quality in Hartland, Wisconsin was observed at 01:00:00 on 2026-07-23.
The current air quality in Hartland, Wisconsin is 40, categorized as Good based on real-time data.
The most common pollutant in Hartland, Wisconsin is O3.
If the air quality in Hartland, Wisconsin is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Hartland, Wisconsin is 4.849 μg/m3.
The current PM10 concentration at Hartland, Wisconsin is 21.744 μg/m3.
The current carbon monoxide (CO) concentration at Hartland, Wisconsin is 0.117 ppm.
The current sulfur dioxide (SO2) concentration at Hartland, Wisconsin is 0.711 ppb.
The current ozone (O3) concentration at Hartland, Wisconsin is 43.456 ppm.
The current nitrogen dioxide (NO2) concentration at Hartland, Wisconsin is 4.563 ppb.
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