Air quality in Saint John
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 µg/m³
WHO guideline 15
PM10
8.1 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
12:00 AM
💨
PM2.5 8 µg/m³
33Good
1:00 AM
💨
PM2.5 6.9 µg/m³
29Good
2:00 AM
💨
PM2.5 6.7 µg/m³
28Good
3:00 AM
💨
PM2.5 6.7 µg/m³
28Good
4:00 AM
💨
PM2.5 6.6 µg/m³
28Good
5:00 AM
💨
PM2.5 6.5 µg/m³
27Good
6:00 AM
💨
PM2.5 6.3 µg/m³
26Good
7:00 AM
💨
PM2.5 6 µg/m³
25Good
8:00 AM
💨
PM2.5 5.5 µg/m³
24Good
9:00 AM
💨
PM2.5 5 µg/m³
25Good
10:00 AM
💨
PM2.5 4.4 µg/m³
27Good
11:00 AM
💨
PM2.5 4.2 µg/m³
31Good
Next few days
daily max · US EPA AQI
Mon
💨
Moderate · UV Low
93
Tue
💨
Moderate · UV High
55