Toronto, Ontario, Canada Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
June Air Quality Analysis
Toronto, Ontario, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (2nd June):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 33 of Good air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Jun - 2nd Jun 2026
Toronto, Ontario, Canada
5 AM1st Jun 2026
8 PM
4 AM2nd Jun 2026
35AQI
27AQI
33AQI
29AQI
In the last 24 hours,
Toronto's AQI reached its highest point of 35 at 11 AM during the Day, while the lowest point, 27, was recorded at 5 AM during the Day between 1st Jun and 2nd Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Toronto, Ontario, Canada
15°C6/25°C
15°C8/20°C
7°C3/9°C
7°C2/11°C
8°C2/16°C
11°C3/18°C
9°C3/14°C
9°C4/15°C
8°C1/15°C
9°C5/15°C
8°C6/10°C
13°C5/22°C
16°C7/23°C
21°C13/31°C
24°C14/33°C
24°C20/30°C
13°C9/15°C
11°C7/19°C
12°C5/19°C
11°C9/14°C
11°C8/15°C
16°C12/22°C
22°C13/30°C
21°C15/28°C
17°C12/22°C
19°C10/28°C
15°C9/20°C
17°C10/26°C
17°C10/23°C
19°C10/28°C
44AQI
32AQI
43AQI
38AQI
2026 Days Vs Air Quality
Toronto, Ontario, Canada
91%
136
9%
14
Total number of days with different AQI categories in last 153 days in 2026 (212 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2026, 91% of 153 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Toronto, Ontario, Canada
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
11AQI (US)
11AQI (US)
12AQI (US)
42AQI (US)
47AQI (US)
77AQI (US)
69AQI (US)
73AQI (US)
34AQI (US)
16AQI (US)
19AQI (US)
30AQI (US)
39AQI (US)
35AQI (US)
15AQI (US)
26AQI (US)
41AQI (US)
29AQI (US)
32AQI (US)
22AQI (US)
32AQI (US)
56AQI (US)
58AQI (US)
47AQI (US)
48AQI (US)
48AQI (US)
40AQI (US)
44AQI (US)
50AQI (US)
56AQI (US)
45AQI (US)
45AQI (US)
51AQI (US)
49AQI (US)
45AQI (US)
51AQI (US)
50AQI (US)
40AQI (US)
45AQI (US)
46AQI (US)
45AQI (US)
40AQI (US)
39AQI (US)
48AQI (US)
50AQI (US)
44AQI (US)
47AQI (US)
57AQI (US)
44AQI (US)
41AQI (US)
41AQI (US)
38AQI (US)
36AQI (US)
39AQI (US)
46AQI (US)
44AQI (US)
35AQI (US)
38AQI (US)
36AQI (US)
39AQI (US)
61AQI (US)
48AQI (US)
48AQI (US)
42AQI (US)
36AQI (US)
42AQI (US)
39AQI (US)
37AQI (US)
37AQI (US)
43AQI (US)
39AQI (US)
41AQI (US)
36AQI (US)
33AQI (US)
38AQI (US)
34AQI (US)
32AQI (US)
39AQI (US)
42AQI (US)
40AQI (US)
37AQI (US)
40AQI (US)
38AQI (US)
38AQI (US)
37AQI (US)
28AQI (US)
31AQI (US)
31AQI (US)
31AQI (US)
43AQI (US)
33AQI (US)
30AQI (US)
36AQI (US)
30AQI (US)
32AQI (US)
30AQI (US)
28AQI (US)
32AQI (US)
33AQI (US)
31AQI (US)
32AQI (US)
29AQI (US)
36AQI (US)
39AQI (US)
46AQI (US)
40AQI (US)
30AQI (US)
38AQI (US)
28AQI (US)
27AQI (US)
34AQI (US)
26AQI (US)
29AQI (US)
34AQI (US)
28AQI (US)
30AQI (US)
24AQI (US)
27AQI (US)
27AQI (US)
24AQI (US)
27AQI (US)
33AQI (US)
36AQI (US)
30AQI (US)
27AQI (US)
30AQI (US)
31AQI (US)
28AQI (US)
27AQI (US)
36AQI (US)
26AQI (US)
43AQI (US)
49AQI (US)
78AQI (US)
61AQI (US)
46AQI (US)
51AQI (US)
44AQI (US)
44AQI (US)
51AQI (US)
43AQI (US)
47AQI (US)
36AQI (US)
29AQI (US)
28AQI (US)
26AQI (US)
28AQI (US)
30AQI (US)
31AQI (US)
33AQI (US)
39AQI (US)
44AQI (US)
39AQI (US)
32AQI (US)
37AQI (US)
32AQI (US)
No. of days
202638AQI (US)
Highest AQI (US) recorded in
February44AQI (US)
Lowest AQI (US) recorded in
June32AQI (US)
202536AQI (US)
Highest AQI (US) recorded in
August49AQI (US)
Lowest AQI (US) recorded in
May24AQI (US)
202432AQI (US)
Highest AQI (US) recorded in
July38AQI (US)
Lowest AQI (US) recorded in
November24AQI (US)
202339AQI (US)
Highest AQI (US) recorded in
June65AQI (US)
Lowest AQI (US) recorded in
October30AQI (US)
202233AQI (US)
Highest AQI (US) recorded in
November37AQI (US)
Lowest AQI (US) recorded in
August20AQI (US)
202134AQI (US)
Highest AQI (US) recorded in
July42AQI (US)
Lowest AQI (US) recorded in
October26AQI (US)
202032AQI (US)
Highest AQI (US) recorded in
June36AQI (US)
Lowest AQI (US) recorded in
October26AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Toronto's annual 2026 AQI (US) (38) shows an average percentage change of 11.2% (worsened AQI (US)) compared to previous years: 2020 (32), 2021 (34), 2022 (33), 2023 (39), 2024 (32), 2025 (36).