Air quality in Marion
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
8.2 µg/m³
WHO guideline 15
PM10
10.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
4:00 PM
💨
PM2.5 8.2 µg/m³
61Moderate
5:00 PM
💨
PM2.5 8.2 µg/m³
65Moderate
6:00 PM
💨
PM2.5 7.8 µg/m³
68Moderate
7:00 PM
💨
PM2.5 6.9 µg/m³
66Moderate
8:00 PM
💨
PM2.5 6 µg/m³
53Moderate
9:00 PM
💨
PM2.5 5.3 µg/m³
45Good
10:00 PM
💨
PM2.5 4.7 µg/m³
41Good
11:00 PM
💨
PM2.5 4.5 µg/m³
37Good
12:00 AM
💨
PM2.5 4.3 µg/m³
34Good
1:00 AM
💨
PM2.5 4 µg/m³
33Good
2:00 AM
💨
PM2.5 3.9 µg/m³
33Good
3:00 AM
💨
PM2.5 4 µg/m³
34Good
Next few days
daily max · US EPA AQI
Wed
💨
Moderate · UV Very high
68
Thu
💨
Moderate · UV High
55
Fri
💨
Moderate · UV Very high
51
Sun
💨
Good · UV Very high
35