Air quality in Tigard
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
15.2 µg/m³
WHO guideline 15
PM10
15.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
9:00 PM
💨
PM2.5 15.2 µg/m³
58Moderate
10:00 PM
💨
PM2.5 16 µg/m³
59Moderate
11:00 PM
💨
PM2.5 16.4 µg/m³
60Moderate
12:00 AM
💨
PM2.5 17 µg/m³
61Moderate
1:00 AM
💨
PM2.5 18.3 µg/m³
64Moderate
2:00 AM
💨
PM2.5 19.4 µg/m³
66Moderate
3:00 AM
💨
PM2.5 20.5 µg/m³
69Moderate
4:00 AM
💨
PM2.5 20 µg/m³
68Moderate
5:00 AM
💨
PM2.5 20.4 µg/m³
68Moderate
6:00 AM
💨
PM2.5 20.3 µg/m³
68Moderate
7:00 AM
💨
PM2.5 20.4 µg/m³
68Moderate
8:00 AM
💨
PM2.5 18.9 µg/m³
65Moderate
Next few days
daily max · US EPA AQI
Mon
💨
Moderate · UV High
60
Tue
💨
Moderate · UV Moderate
69