Air quality in Ottawa
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
4.2 µg/m³
WHO guideline 15
PM10
4.4 µg/m³
WHO guideline 45
Hour by hour (12h)
US EPA AQI
12:00 PM
💨
PM2.5 4.2 µg/m³
38Good
1:00 PM
💨
PM2.5 4.1 µg/m³
39Good
2:00 PM
💨
PM2.5 3.8 µg/m³
38Good
3:00 PM
💨
PM2.5 3.7 µg/m³
38Good
4:00 PM
💨
PM2.5 3.5 µg/m³
37Good
5:00 PM
💨
PM2.5 3.5 µg/m³
35Good
6:00 PM
💨
PM2.5 3.5 µg/m³
31Good
7:00 PM
💨
PM2.5 4.2 µg/m³
26Good
8:00 PM
💨
PM2.5 5.7 µg/m³
24Good
9:00 PM
💨
PM2.5 7.3 µg/m³
30Good
10:00 PM
💨
PM2.5 8.6 µg/m³
36Good
11:00 PM
💨
PM2.5 10.8 µg/m³
45Good
Next few days
daily max · US EPA AQI
Fri
💨
Moderate · UV High
51
Sat
💨
Moderate · UV High
60
Sun
💨
Good · UV Moderate
43
Mon
💨
Good · UV Moderate
35