Air quality in Los Altos Hills
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
10.2 µg/m³
WHO guideline 15
PM10
14.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
7:00 PM
💨
PM2.5 10.2 µg/m³
43Good
8:00 PM
💨
PM2.5 10.6 µg/m³
44Good
9:00 PM
💨
PM2.5 11.4 µg/m³
48Good
10:00 PM
💨
PM2.5 10.7 µg/m³
45Good
11:00 PM
💨
PM2.5 10.4 µg/m³
43Good
12:00 AM
💨
PM2.5 10.6 µg/m³
44Good
1:00 AM
💨
PM2.5 10.6 µg/m³
44Good
2:00 AM
💨
PM2.5 10.8 µg/m³
45Good
3:00 AM
💨
PM2.5 10.9 µg/m³
45Good
4:00 AM
💨
PM2.5 10.8 µg/m³
45Good
5:00 AM
💨
PM2.5 10.6 µg/m³
44Good
6:00 AM
💨
PM2.5 10.5 µg/m³
44Good
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV High
52