Air quality in Tacoma
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
22 µg/m³
WHO guideline 15
PM10
22.2 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
12:00 PM
💨
PM2.5 22 µg/m³
72Moderate
1:00 PM
💨
PM2.5 23.7 µg/m³
83Moderate
2:00 PM
💨
PM2.5 23.2 µg/m³
100Moderate
3:00 PM
💨
PM2.5 20 µg/m³
91Moderate
4:00 PM
💨
PM2.5 15.3 µg/m³
68Moderate
5:00 PM
💨
PM2.5 11.7 µg/m³
49Good
6:00 PM
💨
PM2.5 9.3 µg/m³
42Good
7:00 PM
💨
PM2.5 8.3 µg/m³
35Good
8:00 PM
💨
PM2.5 8.1 µg/m³
34Good
9:00 PM
💨
PM2.5 8.1 µg/m³
34Good
10:00 PM
💨
PM2.5 7.9 µg/m³
33Good
11:00 PM
💨
PM2.5 7.1 µg/m³
30Good
Next few days
daily max · US EPA AQI
Tue
💨
Moderate · UV Moderate
100
Thu
💨
Good · UV Moderate
33