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
5.3 µg/m³
WHO guideline 15
PM10
5.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
10:00 AM
💨
PM2.5 5.3 µg/m³
35Good
11:00 AM
💨
PM2.5 5.5 µg/m³
37Good
12:00 PM
💨
PM2.5 5.3 µg/m³
41Good
1:00 PM
💨
PM2.5 5.2 µg/m³
43Good
2:00 PM
💨
PM2.5 5 µg/m³
44Good
3:00 PM
💨
PM2.5 5.1 µg/m³
43Good
4:00 PM
💨
PM2.5 5 µg/m³
43Good
5:00 PM
💨
PM2.5 5.2 µg/m³
40Good
6:00 PM
💨
PM2.5 5.6 µg/m³
37Good
7:00 PM
💨
PM2.5 6 µg/m³
34Good
8:00 PM
💨
PM2.5 5.9 µg/m³
32Good
9:00 PM
💨
PM2.5 5.9 µg/m³
31Good
Next few days
daily max · US EPA AQI
Mon
💨
Moderate · UV High
71
Tue
💨
Moderate · UV Low
75
Wed
💨
Moderate · UV High
52