Windsor, Ontario, Canada Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
July Air Quality Analysis
Windsor, Ontario, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (2nd July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 44 of Good air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Jul - 3rd Jul 2025
Windsor, Ontario, Canada
5 AM2nd Jul 2025
9 PM
4 AM3rd Jul 2025
45AQI
35AQI
46AQI
37AQI
In the last 24 hours,
Windsor's AQI reached its highest point of 46 at 4 AM during the Night, while the lowest point, 35, was recorded at 7 AM during the Day between 2nd Jul and 3rd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Windsor, Ontario, Canada
24°C14/33°C
24°C18/33°C
16°C15/18°C
17°C14/22°C
20°C13/26°C
21°C15/29°C
21°C17/27°C
20°C12/28°C
24°C14/33°C
22°C17/27°C
20°C15/24°C
20°C15/27°C
21°C14/28°C
23°C16/32°C
25°C19/32°C
26°C22/32°C
21°C18/23°C
24°C17/30°C
28°C21/36°C
31°C26/37°C
31°C25/40°C
30°C25/37°C
23°C21/25°C
27°C19/37°C
27°C20/35°C
27°C23/30°C
27°C21/35°C
25°C21/31°C
27°C22/33°C
27°C20/34°C
0°C0/0°C
49AQI
49AQI
49AQI
49AQI
2025 Days Vs Air Quality
Windsor, Ontario, Canada
85%
156
14%
25
1%
2
Total number of days with different AQI categories in last 184 days in 2025 (181 days remaining)
Under WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2025, 85% of 184 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
Windsor, Ontario, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
20AQI
25AQI
24AQI
23AQI
24AQI
21AQI
21AQI
22AQI
27AQI
69AQI
60AQI
55AQI
36AQI
30AQI
32AQI
59AQI
48AQI
32AQI
24AQI
23AQI
28AQI
35AQI
42AQI
36AQI
51AQI
31AQI
30AQI
25AQI
24AQI
34AQI
45AQI
23AQI
36AQI
67AQI
24AQI
22AQI
34AQI
29AQI
42AQI
42AQI
42AQI
48AQI
45AQI
43AQI
50AQI
58AQI
42AQI
25AQI
26AQI
27AQI
26AQI
28AQI
57AQI
59AQI
56AQI
45AQI
40AQI
48AQI
29AQI
27AQI
28AQI
48AQI
40AQI
31AQI
27AQI
29AQI
32AQI
30AQI
37AQI
35AQI
27AQI
28AQI
45AQI
41AQI
23AQI
21AQI
27AQI
37AQI
24AQI
22AQI
19AQI
19AQI
24AQI
21AQI
21AQI
37AQI
52AQI
53AQI
44AQI
21AQI
18AQI
22AQI
26AQI
21AQI
23AQI
22AQI
25AQI
17AQI
27AQI
35AQI
38AQI
23AQI
34AQI
31AQI
18AQI
16AQI
26AQI
43AQI
48AQI
20AQI
25AQI
18AQI
41AQI
54AQI
46AQI
27AQI
28AQI
24AQI
40AQI
23AQI
26AQI
33AQI
18AQI
20AQI
25AQI
34AQI
38AQI
20AQI
21AQI
35AQI
25AQI
30AQI
26AQI
22AQI
28AQI
35AQI
27AQI
17AQI
17AQI
18AQI
19AQI
16AQI
14AQI
13AQI
30AQI
24AQI
26AQI
20AQI
36AQI
39AQI
31AQI
27AQI
33AQI
50AQI
72AQI
86AQI
113AQI
74AQI
106AQI
81AQI
59AQI
74AQI
80AQI
56AQI
47AQI
47AQI
45AQI
38AQI
36AQI
27AQI
38AQI
44AQI
48AQI
54AQI
57AQI
53AQI
51AQI
47AQI
31AQI
33AQI
35AQI
34AQI
44AQI
34AQI
40AQI
31AQI
29AQI
25AQI
55AQI
39AQI
No. of days
202536AQI
Highest AQI recorded in
June55AQI
Lowest AQI recorded in
May25AQI
202436AQI
Highest AQI recorded in
February46AQI
Lowest AQI recorded in
November31AQI
202345AQI
Highest AQI recorded in
June79AQI
Lowest AQI recorded in
October33AQI
202239AQI
Highest AQI recorded in
June45AQI
Lowest AQI recorded in
April33AQI
202137AQI
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
May29AQI
202033AQI
Highest AQI recorded in
December39AQI
Lowest AQI recorded in
October26AQI
Most & Least Polluted Years Over the Last 6 Years
Windsor's annual 2025 AQI (36) shows an average percentage change of -5.5% (improved AQI) compared to previous years: 2020 (33), 2021 (37), 2022 (39), 2023 (45), 2024 (36).