Stay updated with real-time air quality in Grafton, 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)
73
Moderate
Grafton, Wisconsin
Last updated: ... (Local time)

Good
Fine
Moderate
Poor
Very poor
Hazardous
15.87 μg/m³
0
12.1
35.5
55.5
250.5
500.5+
99.07 μg/m³
0
55
155
255
425
605+
24.75 ppb
0
55
71
86
201
201+
0.33 ppb
0
36
76
186
605
1005+
2.23 ppb
0
54
101
361
1250
2050+
0.20 ppm
0
4.5
9.5
12.5
230.5
50.5+
Pollen Level
Grafton, Wisconsin
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AQI 79
Moderate
24.27μg/m³
PM2.5
93.95μg/m³
PM10
22.82ppb
O3
0.31ppb
SO2
2.01ppb
NO2
0.27ppm
CO
AQI 77
Moderate
23.19μg/m³
PM2.5
90.78μg/m³
PM10
23.26ppb
O3
0.36ppb
SO2
2.16ppb
NO2
0.26ppm
CO
AQI 77
Moderate
22.84μg/m³
PM2.5
85.11μg/m³
PM10
22.32ppb
O3
0.23ppb
SO2
1.86ppb
NO2
0.28ppm
CO
AQI 75
Moderate
21.52μg/m³
PM2.5
52.20μg/m³
PM10
22.91ppb
O3
0.36ppb
SO2
2.32ppb
NO2
0.26ppm
CO
AQI 75
Moderate
22.44μg/m³
PM2.5
85.02μg/m³
PM10
22.29ppb
O3
0.20ppb
SO2
1.52ppb
NO2
0.28ppm
CO
AQI 73
Moderate
21.45μg/m³
PM2.5
49.88μg/m³
PM10
22.65ppb
O3
0.35ppb
SO2
2.38ppb
NO2
0.26ppm
CO
The air quality data for Wisconsin, USA is gathered from reliable sources such as satellites and monitoring stations, adhering to US EPA guidelines. With the help of advanced algorithms and machine learning, factors like traffic and population density are analyzed to deliver accurate and dependable results.
Source: Ambee Data Sources
Air quality updates for Grafton, Wisconsin are available every hour.
Grafton, Wisconsin experienced its worst air quality at 05:00:00, 2026-08-23.
The best air quality in Grafton, Wisconsin was observed at 03:00:00 on 2026-08-23.
The air quality in Grafton, Wisconsin right now is Moderate, with an AQI of 73.
In Grafton, Wisconsin, PM10 is the most frequently found pollutant.
When air quality in Grafton, Wisconsin is compromised, staying indoors and wearing a mask can reduce health risks.
Grafton, Wisconsin currently has a PM2.5 concentration of 15.866 μg/m3.
Grafton, Wisconsin currently has a PM10 concentration of 99.072 μg/m3.
The current carbon monoxide (CO) level in Grafton, Wisconsin is 0.2 ppm.
The current sulfur dioxide (SO2) concentration in Grafton, Wisconsin is 0.333 ppb.
Grafton, Wisconsin currently has an ozone (O3) concentration of 24.754 ppm.
The current level of nitrogen dioxide (NO2) in Grafton, Wisconsin is 2.227 ppb.
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