Air quality in Presidio
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
8.5 µg/m³
WHO guideline 15
PM10
11.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
9:00 AM
💨
PM2.5 8.5 µg/m³
35Good
10:00 AM
💨
PM2.5 9 µg/m³
38Good
11:00 AM
💨
PM2.5 9 µg/m³
38Good
12:00 PM
💨
PM2.5 8.9 µg/m³
39Good
1:00 PM
💨
PM2.5 8.2 µg/m³
42Good
2:00 PM
💨
PM2.5 7.2 µg/m³
44Good
3:00 PM
💨
PM2.5 6.5 µg/m³
46Good
4:00 PM
💨
PM2.5 6.1 µg/m³
47Good
5:00 PM
💨
PM2.5 5.7 µg/m³
48Good
6:00 PM
💨
PM2.5 5.5 µg/m³
48Good
7:00 PM
💨
PM2.5 5.5 µg/m³
47Good
8:00 PM
💨
PM2.5 5.6 µg/m³
45Good
Next few days
daily max · US EPA AQI
Sun
💨
Good · UV Extreme
48
Mon
💨
Good · UV Extreme
49
Tue
💨
Good · UV Extreme
50
Wed
💨
Good · UV Extreme
48
Thu
💨
Good · UV Very high
39