Air quality in Altoona
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
5.3 µg/m³
WHO guideline 15
PM10
6.5 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
6:00 PM
💨
PM2.5 5.3 µg/m³
44Good
7:00 PM
💨
PM2.5 5.5 µg/m³
39Good
8:00 PM
💨
PM2.5 5.5 µg/m³
34Good
9:00 PM
💨
PM2.5 5 µg/m³
29Good
10:00 PM
💨
PM2.5 4.2 µg/m³
26Good
11:00 PM
💨
PM2.5 3.4 µg/m³
25Good
12:00 AM
💨
PM2.5 2.6 µg/m³
26Good
1:00 AM
💨
PM2.5 2.1 µg/m³
26Good
2:00 AM
💨
PM2.5 1.9 µg/m³
25Good
3:00 AM
💨
PM2.5 1.7 µg/m³
23Good
4:00 AM
💨
PM2.5 1.6 µg/m³
22Good
5:00 AM
💨
PM2.5 1.6 µg/m³
23Good
Next few days
daily max · US EPA AQI
Fri
💨
Moderate · UV High
56
Mon
💨
Good · UV Moderate
42