Air quality in Winnetka
The US Air Quality Index (EPA) grades air from 0 to 500 using fine particles (PM2.5/PM10), ozone and nitrogen dioxide. 0-50 is Good, 51-100 Moderate, 101-150 Unhealthy for Sensitive Groups, and anything higher affects everyone.
PM2.5
15.4 µg/m³
WHO guideline 15
PM10
25.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
8:00 PM
💨
PM2.5 15.4 µg/m³
58Moderate
9:00 PM
💨
PM2.5 16.5 µg/m³
60Moderate
10:00 PM
💨
PM2.5 18.5 µg/m³
64Moderate
11:00 PM
💨
PM2.5 20.7 µg/m³
69Moderate
12:00 AM
💨
PM2.5 22.8 µg/m³
74Moderate
1:00 AM
💨
PM2.5 24.5 µg/m³
77Moderate
2:00 AM
💨
PM2.5 25.9 µg/m³
80Moderate
3:00 AM
💨
PM2.5 27.2 µg/m³
83Moderate
4:00 AM
💨
PM2.5 28.1 µg/m³
85Moderate
5:00 AM
💨
PM2.5 28.5 µg/m³
85Moderate
6:00 AM
💨
PM2.5 29 µg/m³
87Moderate
7:00 AM
💨
PM2.5 29.7 µg/m³
88Moderate
Next few days
daily max · US EPA AQI
Wed
💨
Unhealthy for Sensitive Groups · UV Very high
142
Thu
💨
Unhealthy for Sensitive Groups · UV Very high
110
Fri
💨
Unhealthy for Sensitive Groups · UV Very high
111
Sat
💨
Unhealthy for Sensitive Groups · UV Very high
133
Sun
💨
Moderate · UV Very high
82