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
3.5 µg/m³
WHO guideline 15
PM10
3.6 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
6:00 AM
💨
PM2.5 3.5 µg/m³
26Good
7:00 AM
💨
PM2.5 4.2 µg/m³
26Good
8:00 AM
💨
PM2.5 4.9 µg/m³
26Good
9:00 AM
💨
PM2.5 5 µg/m³
31Good
10:00 AM
💨
PM2.5 5.8 µg/m³
36Good
11:00 AM
💨
PM2.5 6.1 µg/m³
42Good
12:00 PM
💨
PM2.5 6.8 µg/m³
48Good
1:00 PM
💨
PM2.5 7.2 µg/m³
61Moderate
2:00 PM
💨
PM2.5 7.5 µg/m³
76Moderate
3:00 PM
💨
PM2.5 7.9 µg/m³
85Moderate
4:00 PM
💨
PM2.5 8.4 µg/m³
86Moderate
5:00 PM
💨
PM2.5 9.1 µg/m³
86Moderate
Next few days
daily max · US EPA AQI
Fri
💨
Moderate · UV High
86