Air quality in Greendale
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.
US AQI · EPA
117
Unhealthy for Sensitive Groups
PM2.5
41.8 µg/m³
WHO guideline 15
PM10
42.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
8:00 AM
💨
PM2.5 41.8 µg/m³
117Unhealthy for Sensitive Groups
9:00 AM
💨
PM2.5 29.7 µg/m³
88Moderate
10:00 AM
💨
PM2.5 19 µg/m³
66Moderate
11:00 AM
💨
PM2.5 13.6 µg/m³
54Moderate
12:00 PM
💨
PM2.5 11.7 µg/m³
49Good
1:00 PM
💨
PM2.5 10.7 µg/m³
45Good
2:00 PM
💨
PM2.5 9.8 µg/m³
47Good
3:00 PM
💨
PM2.5 9.1 µg/m³
48Good
4:00 PM
💨
PM2.5 8.7 µg/m³
48Good
5:00 PM
💨
PM2.5 8.6 µg/m³
48Good
6:00 PM
💨
PM2.5 8.5 µg/m³
46Good
7:00 PM
💨
PM2.5 8.5 µg/m³
43Good
Next few days
daily max · US EPA AQI
Wed
💨
Unhealthy for Sensitive Groups · UV Moderate
130
Thu
💨
Moderate · UV Moderate
76