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)
49
Good
Hartland, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
8.84 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
23.83 μg/m³
0
55
155
255
425
605+
47.00 ppb
0
55
71
86
201
201+
0.44 ppb
0
36
76
186
605
1005+
11.32 ppb
0
54
101
361
1250
2050+
0.22 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Hartland, Wisconsin
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AQI 49
Good
9.11μg/m³
PM2.5
26.06μg/m³
PM10
47.50ppb
O3
0.42ppb
SO2
10.40ppb
NO2
0.23ppm
CO
AQI 54
Moderate
10.52μg/m³
PM2.5
27.67μg/m³
PM10
49.84ppb
O3
0.41ppb
SO2
8.60ppb
NO2
0.25ppm
CO
AQI 49
Good
8.67μg/m³
PM2.5
23.74μg/m³
PM10
49.77ppb
O3
0.45ppb
SO2
11.94ppb
NO2
0.20ppm
CO
AQI 54
Moderate
10.51μg/m³
PM2.5
27.17μg/m³
PM10
49.96ppb
O3
0.42ppb
SO2
8.63ppb
NO2
0.25ppm
CO
AQI 52
Moderate
9.51μg/m³
PM2.5
22.13μg/m³
PM10
47.63ppb
O3
0.42ppb
SO2
10.80ppb
NO2
0.22ppm
CO
AQI 52
Moderate
9.71μg/m³
PM2.5
23.79μg/m³
PM10
47.57ppb
O3
0.40ppb
SO2
8.08ppb
NO2
0.26ppm
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 01:00:00 on 2026-04-23.
In the last 24 hrs, the best air quality in Hartland, Wisconsin was observed at 09:00:00 on 2026-04-23.
The current air quality in Hartland, Wisconsin is 49, categorized as Good based on real-time data.
The most common pollutant in Hartland, Wisconsin is PM2.5.
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 8.835 μg/m3.
The current PM10 concentration at Hartland, Wisconsin is 23.826 μg/m3.
The current carbon monoxide (CO) concentration at Hartland, Wisconsin is 0.216 ppm.
The current sulfur dioxide (SO2) concentration at Hartland, Wisconsin is 0.437 ppb.
The current ozone (O3) concentration at Hartland, Wisconsin is 47.003 ppm.
The current nitrogen dioxide (NO2) concentration at Hartland, Wisconsin is 11.325 ppb.
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