Air quality in Portage
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
3.8 µg/m³
WHO guideline 15
PM10
3.9 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
5:00 AM
💨
PM2.5 3.8 µg/m³
25Good
6:00 AM
💨
PM2.5 4.5 µg/m³
23Good
7:00 AM
💨
PM2.5 5.6 µg/m³
23Good
8:00 AM
💨
PM2.5 6.3 µg/m³
26Good
9:00 AM
💨
PM2.5 6.4 µg/m³
27Good
10:00 AM
💨
PM2.5 6.3 µg/m³
30Good
11:00 AM
💨
PM2.5 6.2 µg/m³
33Good
12:00 PM
💨
PM2.5 6.2 µg/m³
36Good
1:00 PM
💨
PM2.5 6.2 µg/m³
38Good
2:00 PM
💨
PM2.5 6 µg/m³
39Good
3:00 PM
💨
PM2.5 6.2 µg/m³
40Good
4:00 PM
💨
PM2.5 6.4 µg/m³
39Good
Next few days
daily max · US EPA AQI
Tue
💨
Unhealthy for Sensitive Groups · UV High
106
Wed
💨
Unhealthy for Sensitive Groups · UV High
106