Windsor, Ontario, Canada Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Windsor, Ontario, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (27th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 36 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 26th Sep - 27th Sep 2026
Windsor, Ontario, Canada
7 AM26th Sep 2026
7 PM
6 AM27th Sep 2026
44AQI
16AQI
55AQI
36AQI
In the last 24 hours,
Windsor's AQI reached its highest point of 55 at 10 PM during the Night, while the lowest point, 16, was recorded at 5 PM during the Day between 26th Sep and 27th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Windsor, Ontario, Canada
22°C13/29°C
22°C20/26°C
25°C20/32°C
28°C21/35°C
29°C23/37°C
25°C21/32°C
22°C19/26°C
22°C18/29°C
20°C15/27°C
21°C14/29°C
22°C14/30°C
24°C21/28°C
23°C19/28°C
20°C13/29°C
22°C15/28°C
22°C16/28°C
17°C13/22°C
21°C17/27°C
21°C18/25°C
19°C17/25°C
18°C15/24°C
16°C15/18°C
16°C15/18°C
15°C12/18°C
14°C10/19°C
15°C12/18°C
16°C14/20°C
15°C12/19°C
16°C12/22°C
17°C13/23°C
36AQI
32AQI
35AQI
33AQI
2026 Days Vs Air Quality
Windsor, Ontario, Canada
90%
241
9%
24
0.3%
1
0.3%
1
Total number of days with different AQI categories in last 270 days in 2026 (95 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2026, 90% of 270 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
Windsor, Ontario, Canada
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI (US)
36AQI (US)
41AQI (US)
43AQI (US)
66AQI (US)
95AQI (US)
74AQI (US)
67AQI (US)
28AQI (US)
29AQI (US)
26AQI (US)
39AQI (US)
54AQI (US)
36AQI (US)
15AQI (US)
42AQI (US)
48AQI (US)
34AQI (US)
36AQI (US)
38AQI (US)
45AQI (US)
53AQI (US)
54AQI (US)
41AQI (US)
48AQI (US)
47AQI (US)
34AQI (US)
38AQI (US)
49AQI (US)
58AQI (US)
38AQI (US)
42AQI (US)
50AQI (US)
45AQI (US)
41AQI (US)
51AQI (US)
47AQI (US)
33AQI (US)
31AQI (US)
42AQI (US)
43AQI (US)
30AQI (US)
28AQI (US)
36AQI (US)
44AQI (US)
51AQI (US)
55AQI (US)
54AQI (US)
41AQI (US)
34AQI (US)
34AQI (US)
28AQI (US)
37AQI (US)
32AQI (US)
39AQI (US)
39AQI (US)
27AQI (US)
33AQI (US)
29AQI (US)
31AQI (US)
44AQI (US)
40AQI (US)
42AQI (US)
36AQI (US)
28AQI (US)
34AQI (US)
30AQI (US)
32AQI (US)
33AQI (US)
37AQI (US)
30AQI (US)
38AQI (US)
34AQI (US)
27AQI (US)
26AQI (US)
30AQI (US)
29AQI (US)
39AQI (US)
42AQI (US)
30AQI (US)
30AQI (US)
34AQI (US)
28AQI (US)
29AQI (US)
42AQI (US)
19AQI (US)
21AQI (US)
19AQI (US)
34AQI (US)
33AQI (US)
27AQI (US)
23AQI (US)
21AQI (US)
31AQI (US)
29AQI (US)
29AQI (US)
24AQI (US)
31AQI (US)
31AQI (US)
24AQI (US)
24AQI (US)
30AQI (US)
29AQI (US)
35AQI (US)
31AQI (US)
28AQI (US)
22AQI (US)
28AQI (US)
22AQI (US)
32AQI (US)
32AQI (US)
35AQI (US)
19AQI (US)
28AQI (US)
21AQI (US)
21AQI (US)
23AQI (US)
24AQI (US)
21AQI (US)
22AQI (US)
33AQI (US)
43AQI (US)
32AQI (US)
21AQI (US)
28AQI (US)
32AQI (US)
25AQI (US)
19AQI (US)
25AQI (US)
30AQI (US)
23AQI (US)
48AQI (US)
48AQI (US)
54AQI (US)
56AQI (US)
52AQI (US)
42AQI (US)
39AQI (US)
41AQI (US)
50AQI (US)
42AQI (US)
43AQI (US)
29AQI (US)
29AQI (US)
23AQI (US)
26AQI (US)
21AQI (US)
26AQI (US)
33AQI (US)
26AQI (US)
36AQI (US)
29AQI (US)
34AQI (US)
24AQI (US)
21AQI (US)
26AQI (US)
25AQI (US)
25AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
23AQI (US)
23AQI (US)
26AQI (US)
25AQI (US)
21AQI (US)
22AQI (US)
21AQI (US)
19AQI (US)
22AQI (US)
22AQI (US)
24AQI (US)
16AQI (US)
24AQI (US)
27AQI (US)
24AQI (US)
23AQI (US)
31AQI (US)
67AQI (US)
47AQI (US)
30AQI (US)
23AQI (US)
36AQI (US)
29AQI (US)
26AQI (US)
25AQI (US)
30AQI (US)
28AQI (US)
26AQI (US)
27AQI (US)
41AQI (US)
32AQI (US)
38AQI (US)
84AQI (US)
221AQI (US)
93AQI (US)
117AQI (US)
84AQI (US)
78AQI (US)
22AQI (US)
28AQI (US)
34AQI (US)
35AQI (US)
43AQI (US)
62AQI (US)
51AQI (US)
29AQI (US)
45AQI (US)
54AQI (US)
51AQI (US)
30AQI (US)
37AQI (US)
34AQI (US)
34AQI (US)
39AQI (US)
42AQI (US)
41AQI (US)
29AQI (US)
39AQI (US)
46AQI (US)
42AQI (US)
40AQI (US)
45AQI (US)
32AQI (US)
38AQI (US)
33AQI (US)
28AQI (US)
25AQI (US)
33AQI (US)
45AQI (US)
36AQI (US)
44AQI (US)
38AQI (US)
27AQI (US)
37AQI (US)
35AQI (US)
39AQI (US)
35AQI (US)
35AQI (US)
45AQI (US)
47AQI (US)
47AQI (US)
37AQI (US)
28AQI (US)
30AQI (US)
33AQI (US)
28AQI (US)
34AQI (US)
30AQI (US)
34AQI (US)
36AQI (US)
32AQI (US)
30AQI (US)
36AQI (US)
34AQI (US)
38AQI (US)
39AQI (US)
37AQI (US)
32AQI (US)
36AQI (US)
31AQI (US)
27AQI (US)
29AQI (US)
30AQI (US)
32AQI (US)
37AQI (US)
36AQI (US)
44AQI (US)
39AQI (US)
32AQI (US)
27AQI (US)
34AQI (US)
25AQI (US)
51AQI (US)
37AQI (US)
34AQI (US)
No. of days
202636AQI (US)
Highest AQI (US) recorded in
July51AQI (US)
Lowest AQI (US) recorded in
June25AQI (US)
202542AQI (US)
Highest AQI (US) recorded in
June55AQI (US)
Lowest AQI (US) recorded in
May25AQI (US)
202436AQI (US)
Highest AQI (US) recorded in
February46AQI (US)
Lowest AQI (US) recorded in
November31AQI (US)
202345AQI (US)
Highest AQI (US) recorded in
June79AQI (US)
Lowest AQI (US) recorded in
October33AQI (US)
202239AQI (US)
Highest AQI (US) recorded in
June45AQI (US)
Lowest AQI (US) recorded in
April33AQI (US)
202137AQI (US)
Highest AQI (US) recorded in
August46AQI (US)
Lowest AQI (US) recorded in
May29AQI (US)
202033AQI (US)
Highest AQI (US) recorded in
December39AQI (US)
Lowest AQI (US) recorded in
October26AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Windsor's annual 2026 AQI (US) (36) shows an average percentage change of -5.9% (improved AQI (US)) compared to previous years: 2020 (33), 2021 (37), 2022 (39), 2023 (45), 2024 (36), 2025 (42).