Air quality in Saint Johns
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
4.4 µg/m³
WHO guideline 15
PM10
4.8 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
1:00 PM
💨
PM2.5 4.4 µg/m³
38Good
2:00 PM
💨
PM2.5 4.7 µg/m³
41Good
3:00 PM
💨
PM2.5 5.4 µg/m³
44Good
4:00 PM
💨
PM2.5 6.1 µg/m³
48Good
5:00 PM
💨
PM2.5 6.4 µg/m³
49Good
6:00 PM
💨
PM2.5 6.3 µg/m³
48Good
7:00 PM
💨
PM2.5 6.7 µg/m³
44Good
8:00 PM
💨
PM2.5 6.8 µg/m³
40Good
9:00 PM
💨
PM2.5 7.5 µg/m³
36Good
10:00 PM
💨
PM2.5 7.8 µg/m³
33Good
11:00 PM
💨
PM2.5 7.6 µg/m³
32Good
12:00 AM
💨
PM2.5 7.5 µg/m³
31Good
Next few days
daily max · US EPA AQI
Sun
💨
Good · UV Moderate
49
Mon
💨
Moderate · UV High
78
Wed
💨
Unhealthy for Sensitive Groups · UV High
111