Stay updated with real-time air quality in Greendale, 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)
16
Good
Greendale, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
3.07 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
9.23 μg/m³
0
55
155
255
425
605+
17.21 ppb
0
55
71
86
201
201+
0.40 ppb
0
36
76
186
605
1005+
6.58 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Low
Greendale, Wisconsin
Greendale, Wisconsin
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AQI 16
Good
3.15μg/m³
PM2.5
10.88μg/m³
PM10
16.29ppb
O3
0.56ppb
SO2
6.35ppb
NO2
0.20ppm
CO
AQI 16
Good
3.12μg/m³
PM2.5
10.27μg/m³
PM10
16.32ppb
O3
0.57ppb
SO2
6.42ppb
NO2
0.20ppm
CO
AQI 16
Good
3.32μg/m³
PM2.5
12.90μg/m³
PM10
16.61ppb
O3
0.55ppb
SO2
5.50ppb
NO2
0.19ppm
CO
AQI 16
Good
3.23μg/m³
PM2.5
10.03μg/m³
PM10
14.99ppb
O3
0.54ppb
SO2
4.78ppb
NO2
0.18ppm
CO
AQI 16
Good
3.16μg/m³
PM2.5
11.17μg/m³
PM10
16.76ppb
O3
0.57ppb
SO2
6.16ppb
NO2
0.19ppm
CO
AQI 16
Good
3.11μg/m³
PM2.5
10.39μg/m³
PM10
16.69ppb
O3
0.57ppb
SO2
6.32ppb
NO2
0.19ppm
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 Greendale, Wisconsin is updated every hour.
The worst air quality in Greendale, Wisconsin in the last 24 hours was observed at 09:00:00 on 2026-06-14.
In the last 24 hrs, the best air quality in Greendale, Wisconsin was observed at 08:00:00 on 2026-06-15.
The current air quality in Greendale, Wisconsin is 16, categorized as Good based on real-time data.
The most common pollutant in Greendale, Wisconsin is O3.
If the air quality in Greendale, Wisconsin is poor, consider staying indoors and wearing a mask to protect yourself.
The current PM2.5 concentration at Greendale, Wisconsin is 3.07 μg/m3.
The current PM10 concentration at Greendale, Wisconsin is 9.23 μg/m3.
The current carbon monoxide (CO) concentration at Greendale, Wisconsin is 0.196 ppm.
The current sulfur dioxide (SO2) concentration at Greendale, Wisconsin is 0.397 ppb.
The current ozone (O3) concentration at Greendale, Wisconsin is 17.214 ppm.
The current nitrogen dioxide (NO2) concentration at Greendale, Wisconsin is 6.579 ppb.
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