Dufferin Street, Toronto, Ontario, Canada Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Dufferin Street, Toronto, Ontario, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (11th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 52 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 11th Oct - 12th Oct 2025
Dufferin Street, Toronto, Ontario, Canada
7 AM11th Oct 2025
7 PM
6 AM12th Oct 2025
63AQI
37AQI
54AQI
39AQI
In the last 24 hours,
Dufferin Street's AQI reached its highest point of 63 at 12 PM during the Day, while the lowest point, 37, was recorded at 7 AM during the Day between 11th Oct and 12th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Dufferin Street, Toronto, Ontario, Canada
--°C/°C
20°C16/25°C
21°C14/29°C
20°C15/26°C
20°C13/26°C
20°C12/28°C
21°C13/29°C
18°C14/23°C
15°C10/21°C
19°C11/29°C
20°C17/25°C
20°C18/25°C
19°C18/22°C
19°C17/21°C
19°C14/25°C
19°C15/24°C
20°C15/26°C
18°C10/29°C
17°C11/25°C
13°C8/20°C
13°C7/20°C
16°C8/26°C
20°C13/30°C
20°C13/31°C
21°C13/31°C
19°C14/23°C
12°C7/16°C
8°C3/14°C
10°C1/20°C
13°C11/17°C
13°C9/21°C
42AQI
41AQI
43AQI
42AQI
2025 Days Vs Air Quality
Dufferin Street, Toronto, Ontario, Canada
78%
155
21%
41
2%
3
Total number of days with different AQI categories in last 286 days in 2025 (79 days remaining)
Under WHO’s Safe Air Quality Limits: 78%
Health Risk Level:
Low
In 2025, 78% of 286 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Dufferin Street, Toronto, Ontario, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
28AQI
22AQI
25AQI
28AQI
27AQI
18AQI
18AQI
33AQI
20AQI
26AQI
17AQI
22AQI
15AQI
22AQI
35AQI
31AQI
26AQI
36AQI
30AQI
19AQI
13AQI
20AQI
36AQI
43AQI
18AQI
23AQI
18AQI
19AQI
38AQI
36AQI
29AQI
15AQI
32AQI
36AQI
20AQI
32AQI
31AQI
17AQI
19AQI
18AQI
19AQI
24AQI
17AQI
21AQI
25AQI
23AQI
33AQI
38AQI
24AQI
27AQI
36AQI
38AQI
33AQI
14AQI
15AQI
17AQI
12AQI
12AQI
14AQI
15AQI
22AQI
32AQI
25AQI
29AQI
32AQI
28AQI
15AQI
20AQI
43AQI
61AQI
54AQI
62AQI
66AQI
80AQI
68AQI
54AQI
63AQI
67AQI
41AQI
33AQI
40AQI
44AQI
38AQI
41AQI
35AQI
38AQI
49AQI
52AQI
54AQI
56AQI
47AQI
45AQI
39AQI
35AQI
34AQI
46AQI
43AQI
42AQI
51AQI
34AQI
51AQI
55AQI
48AQI
36AQI
45AQI
44AQI
52AQI
50AQI
47AQI
47AQI
59AQI
66AQI
46AQI
26AQI
33AQI
32AQI
42AQI
23AQI
24AQI
39AQI
40AQI
52AQI
50AQI
54AQI
48AQI
51AQI
86AQI
54AQI
44AQI
111AQI
130AQI
104AQI
86AQI
91AQI
90AQI
78AQI
67AQI
64AQI
59AQI
48AQI
67AQI
67AQI
61AQI
43AQI
15AQI
22AQI
19AQI
20AQI
25AQI
34AQI
31AQI
17AQI
19AQI
20AQI
27AQI
20AQI
21AQI
28AQI
38AQI
34AQI
39AQI
32AQI
37AQI
20AQI
19AQI
20AQI
22AQI
32AQI
41AQI
38AQI
57AQI
55AQI
49AQI
42AQI
40AQI
52AQI
28AQI
21AQI
22AQI
35AQI
43AQI
43AQI
30AQI
33AQI
41AQI
29AQI
33AQI
29AQI
37AQI
40AQI
56AQI
67AQI
76AQI
68AQI
48AQI
37AQI
32AQI
46AQI
52AQI
26AQI
25AQI
24AQI
47AQI
46AQI
51AQI
35AQI
51AQI
No. of days
202539AQI
Highest AQI recorded in
August51AQI
Lowest AQI recorded in
May24AQI
Most & Least Polluted Years Over the Last 1 Years
Dufferin Street's annual 2025 AQI (39) shows an average percentage change of NaN% (improved AQI) compared to previous years: .