Air quality in Eureka
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.
US AQI · EPA
130
Unhealthy for Sensitive Groups
PM2.5
47.3 µg/m³
WHO guideline 15
PM10
50.9 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
11:00 AM
💨
PM2.5 47.3 µg/m³
130Unhealthy for Sensitive Groups
12:00 PM
💨
PM2.5 39.7 µg/m³
111Unhealthy for Sensitive Groups
1:00 PM
💨
PM2.5 33.9 µg/m³
97Moderate
2:00 PM
💨
PM2.5 30.3 µg/m³
89Moderate
3:00 PM
💨
PM2.5 27.8 µg/m³
84Moderate
4:00 PM
💨
PM2.5 26.4 µg/m³
81Moderate
5:00 PM
💨
PM2.5 26.2 µg/m³
81Moderate
6:00 PM
💨
PM2.5 25.7 µg/m³
80Moderate
7:00 PM
💨
PM2.5 29 µg/m³
87Moderate
8:00 PM
💨
PM2.5 33.2 µg/m³
95Moderate
9:00 PM
💨
PM2.5 37.8 µg/m³
107Unhealthy for Sensitive Groups
10:00 PM
💨
PM2.5 41 µg/m³
115Unhealthy for Sensitive Groups
Next few days
daily max · US EPA AQI
Mon
💨
Unhealthy · UV High
169
Tue
💨
Unhealthy · UV High
173
Wed
💨
Unhealthy · UV High
167
Thu
💨
Unhealthy · UV Very high
151
Fri
💨
Unhealthy for Sensitive Groups · UV Moderate
123