Air quality in Daly City
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
7.2 µg/m³
WHO guideline 15
PM10
10.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
3:00 PM
💨
PM2.5 7.2 µg/m³
30Good
4:00 PM
💨
PM2.5 7.5 µg/m³
31Good
5:00 PM
💨
PM2.5 7.7 µg/m³
32Good
6:00 PM
💨
PM2.5 7.8 µg/m³
33Good
7:00 PM
💨
PM2.5 8 µg/m³
33Good
8:00 PM
💨
PM2.5 8.2 µg/m³
34Good
9:00 PM
💨
PM2.5 8.4 µg/m³
35Good
10:00 PM
💨
PM2.5 8.4 µg/m³
35Good
11:00 PM
💨
PM2.5 8.4 µg/m³
35Good
12:00 AM
💨
PM2.5 8.4 µg/m³
35Good
1:00 AM
💨
PM2.5 8.4 µg/m³
35Good
2:00 AM
💨
PM2.5 8.4 µg/m³
35Good
Next few days
daily max · US EPA AQI
Thu
💨
Good · UV Very high
40
Fri
💨
Moderate · UV Very high
51
Sat
💨
Good · UV Very high
40
Sun
💨
Good · UV Very high
48
Mon
💨
Good · UV Moderate
44