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Forest Hill South, ON Air Quality

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Air quality in Forest Hill South

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.

US AQI · EPA
20
Good
PM2.5
3.4 µg/m³
WHO guideline 15
PM10
3.4 µg/m³
WHO guideline 45
NO₂ · O₃
13 · 43
µg/m³

Hour by hour (12h)

US EPA AQI
4:00 AM 💨 PM2.5 3.4 µg/m³
20Good
5:00 AM 💨 PM2.5 3.6 µg/m³
20Good
6:00 AM 💨 PM2.5 3.8 µg/m³
19Good
7:00 AM 💨 PM2.5 4.2 µg/m³
18Good
8:00 AM 💨 PM2.5 5.1 µg/m³
21Good
9:00 AM 💨 PM2.5 6.1 µg/m³
25Good
10:00 AM 💨 PM2.5 6.5 µg/m³
29Good
11:00 AM 💨 PM2.5 6.6 µg/m³
35Good
12:00 PM 💨 PM2.5 6.4 µg/m³
39Good
1:00 PM 💨 PM2.5 6.1 µg/m³
42Good
2:00 PM 💨 PM2.5 6.2 µg/m³
44Good
3:00 PM 💨 PM2.5 6.5 µg/m³
45Good

Next few days

daily max · US EPA AQI
Sat 💨 Good · UV High
46
Sun 💨 Moderate · UV Moderate
60
Mon 💨 Moderate · UV High
67
Tue 💨 Moderate · UV Moderate
76
Wed 💨 Good · UV High
40
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Updated: 4:26 AM