Air quality in Hayward
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
5.5 µg/m³
WHO guideline 15
PM10
7.2 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
10:00 PM
💨
PM2.5 5.5 µg/m³
23Good
11:00 PM
💨
PM2.5 5.7 µg/m³
24Good
12:00 AM
💨
PM2.5 6 µg/m³
25Good
1:00 AM
💨
PM2.5 6.1 µg/m³
25Good
2:00 AM
💨
PM2.5 6.1 µg/m³
25Good
3:00 AM
💨
PM2.5 5.9 µg/m³
25Good
4:00 AM
💨
PM2.5 5.8 µg/m³
24Good
5:00 AM
💨
PM2.5 5.7 µg/m³
24Good
6:00 AM
💨
PM2.5 5.7 µg/m³
24Good
7:00 AM
💨
PM2.5 5.8 µg/m³
24Good
8:00 AM
💨
PM2.5 5.6 µg/m³
23Good
9:00 AM
💨
PM2.5 5.8 µg/m³
24Good
Next few days
daily max · US EPA AQI
Thu
💨
Good · UV Very high
44
Fri
💨
Good · UV Very high
39
Sat
💨
Good · UV Very high
43
Sun
💨
Good · UV Very high
41
Mon
💨
Good · UV Very high
38