Air quality in Logan
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
6 µg/m³
WHO guideline 15
PM10
6.2 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
4:00 AM
💨
PM2.5 6 µg/m³
26Good
5:00 AM
💨
PM2.5 5 µg/m³
30Good
6:00 AM
💨
PM2.5 3 µg/m³
32Good
7:00 AM
💨
PM2.5 2.1 µg/m³
32Good
8:00 AM
💨
PM2.5 1.6 µg/m³
33Good
9:00 AM
💨
PM2.5 1.8 µg/m³
34Good
10:00 AM
💨
PM2.5 1.7 µg/m³
36Good
11:00 AM
💨
PM2.5 1.4 µg/m³
38Good
12:00 PM
💨
PM2.5 1.1 µg/m³
41Good
1:00 PM
💨
PM2.5 1.1 µg/m³
44Good
2:00 PM
💨
PM2.5 1.4 µg/m³
46Good
3:00 PM
💨
PM2.5 1.7 µg/m³
47Good
Next few days
daily max · US EPA AQI
Fri
💨
Moderate · UV High
75
Sat
💨
Moderate · UV High
53