Air quality in Portola
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
5.4 µg/m³
WHO guideline 15
PM10
5.7 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
8:00 AM
💨
PM2.5 5.4 µg/m³
23Good
9:00 AM
💨
PM2.5 2.3 µg/m³
29Good
10:00 AM
💨
PM2.5 1.6 µg/m³
41Good
11:00 AM
💨
PM2.5 1.5 µg/m³
50Good
12:00 PM
💨
PM2.5 1.5 µg/m³
58Moderate
1:00 PM
💨
PM2.5 1.4 µg/m³
61Moderate
2:00 PM
💨
PM2.5 1.4 µg/m³
63Moderate
3:00 PM
💨
PM2.5 1.4 µg/m³
66Moderate
4:00 PM
💨
PM2.5 1.5 µg/m³
70Moderate
5:00 PM
💨
PM2.5 1.6 µg/m³
68Moderate
6:00 PM
💨
PM2.5 1.9 µg/m³
63Moderate
7:00 PM
💨
PM2.5 2.2 µg/m³
55Moderate
Next few days
daily max · US EPA AQI
Sun
💨
Moderate · UV Very high
70
Mon
💨
Moderate · UV Very high
90
Tue
💨
Moderate · UV High
83
Wed
💨
Moderate · UV High
76