Air quality in Fremont
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
9.3 µg/m³
WHO guideline 15
PM10
9.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
11:00 AM
💨
PM2.5 9.3 µg/m³
39Good
12:00 PM
💨
PM2.5 6.6 µg/m³
41Good
1:00 PM
💨
PM2.5 6.3 µg/m³
48Good
2:00 PM
💨
PM2.5 5.7 µg/m³
50Good
3:00 PM
💨
PM2.5 5.5 µg/m³
53Moderate
4:00 PM
💨
PM2.5 5.3 µg/m³
51Moderate
5:00 PM
💨
PM2.5 5 µg/m³
48Good
6:00 PM
💨
PM2.5 4.8 µg/m³
48Good
7:00 PM
💨
PM2.5 4.4 µg/m³
45Good
8:00 PM
💨
PM2.5 3.9 µg/m³
40Good
9:00 PM
💨
PM2.5 4.1 µg/m³
34Good
10:00 PM
💨
PM2.5 4.1 µg/m³
28Good
Next few days
daily max · US EPA AQI
Thu
💨
Moderate · UV High
54
Fri
💨
Moderate · UV High
65
Sat
💨
Moderate · UV Very high
52
Sun
💨
Good · UV Moderate
47
Mon
💨
Good · UV Very high
23