Air quality in Atascadero
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
220
Very Unhealthy
PM2.5
162.1 µg/m³
WHO guideline 15
PM10
170 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
5:00 PM
💨
PM2.5 162.1 µg/m³
220Very Unhealthy
6:00 PM
💨
PM2.5 195.1 µg/m³
245Very Unhealthy
7:00 PM
💨
PM2.5 209.1 µg/m³
259Very Unhealthy
8:00 PM
💨
PM2.5 201.2 µg/m³
251Very Unhealthy
9:00 PM
💨
PM2.5 194.2 µg/m³
244Very Unhealthy
10:00 PM
💨
PM2.5 185.3 µg/m³
235Very Unhealthy
11:00 PM
💨
PM2.5 175.1 µg/m³
225Very Unhealthy
12:00 AM
💨
PM2.5 164.8 µg/m³
215Very Unhealthy
1:00 AM
💨
PM2.5 153.2 µg/m³
204Very Unhealthy
2:00 AM
💨
PM2.5 141.1 µg/m³
195Unhealthy
3:00 AM
💨
PM2.5 128.5 µg/m³
189Unhealthy
4:00 AM
💨
PM2.5 116.2 µg/m³
182Unhealthy
Next few days
daily max · US EPA AQI
Sun
💨
Very Unhealthy · UV Moderate
259
Mon
💨
Very Unhealthy · UV Moderate
215
Tue
💨
Unhealthy · UV Moderate
186
Wed
💨
Very Unhealthy · UV Moderate
275
Thu
💨
Very Unhealthy · UV High
269