Kitchener, 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
Kitchener, Ontario, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (28th September):
On this day, AQI across the 2 years varied significantly: 2026 ranks 1st highest AQI at 27 of Good air quality on the same day.
Day & Night AQI Trend: 28th Sep - 29th Sep 2026
Kitchener, Ontario, Canada
7 AM28th Sep 2026
7 PM
6 AM29th Sep 2026
36AQI
22AQI
29AQI
21AQI
In the last 24 hours,
Kitchener's AQI reached its highest point of 36 at 7 AM during the Day, while the lowest point, 21, was recorded at 1 AM during the Night between 28th Sep and 29th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Kitchener, Ontario, Canada
21°C18/24°C
25°C20/32°C
24°C20/32°C
22°C17/27°C
20°C16/25°C
19°C14/24°C
18°C13/24°C
18°C11/27°C
18°C11/26°C
20°C16/24°C
19°C14/25°C
17°C8/25°C
18°C10/26°C
18°C12/22°C
13°C9/18°C
17°C12/22°C
20°C16/23°C
18°C16/22°C
15°C12/20°C
13°C10/16°C
14°C10/19°C
10°C6/13°C
10°C6/15°C
12°C7/17°C
12°C9/17°C
13°C8/19°C
15°C9/21°C
16°C11/22°C
15°C11/20°C
17°C13/22°C
38AQI
30AQI
37AQI
31AQI
2026 Days Vs Air Quality
Kitchener, Ontario, Canada
79%
213
18%
49
1%
4
0.7%
2
Total number of days with different AQI categories in last 272 days in 2026 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 79%
Health Risk Level:
Low
In 2026, 79% of 272 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
Kitchener, Ontario, Canada
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
7AQI (US)
7AQI (US)
21AQI (US)
15AQI (US)
67AQI (US)
90AQI (US)
60AQI (US)
71AQI (US)
33AQI (US)
25AQI (US)
22AQI (US)
44AQI (US)
55AQI (US)
39AQI (US)
11AQI (US)
36AQI (US)
44AQI (US)
28AQI (US)
32AQI (US)
19AQI (US)
41AQI (US)
53AQI (US)
60AQI (US)
48AQI (US)
49AQI (US)
48AQI (US)
44AQI (US)
42AQI (US)
49AQI (US)
59AQI (US)
43AQI (US)
45AQI (US)
74AQI (US)
74AQI (US)
43AQI (US)
54AQI (US)
76AQI (US)
39AQI (US)
42AQI (US)
46AQI (US)
49AQI (US)
40AQI (US)
39AQI (US)
52AQI (US)
84AQI (US)
80AQI (US)
102AQI (US)
116AQI (US)
61AQI (US)
46AQI (US)
50AQI (US)
41AQI (US)
34AQI (US)
40AQI (US)
42AQI (US)
59AQI (US)
33AQI (US)
72AQI (US)
39AQI (US)
38AQI (US)
52AQI (US)
59AQI (US)
96AQI (US)
76AQI (US)
58AQI (US)
78AQI (US)
34AQI (US)
34AQI (US)
59AQI (US)
45AQI (US)
38AQI (US)
43AQI (US)
36AQI (US)
32AQI (US)
37AQI (US)
34AQI (US)
35AQI (US)
65AQI (US)
81AQI (US)
41AQI (US)
60AQI (US)
39AQI (US)
35AQI (US)
46AQI (US)
61AQI (US)
29AQI (US)
31AQI (US)
36AQI (US)
43AQI (US)
66AQI (US)
30AQI (US)
30AQI (US)
40AQI (US)
28AQI (US)
31AQI (US)
28AQI (US)
27AQI (US)
37AQI (US)
49AQI (US)
33AQI (US)
31AQI (US)
47AQI (US)
47AQI (US)
49AQI (US)
42AQI (US)
50AQI (US)
41AQI (US)
32AQI (US)
28AQI (US)
33AQI (US)
37AQI (US)
27AQI (US)
28AQI (US)
32AQI (US)
27AQI (US)
30AQI (US)
27AQI (US)
26AQI (US)
26AQI (US)
24AQI (US)
31AQI (US)
33AQI (US)
40AQI (US)
39AQI (US)
27AQI (US)
34AQI (US)
30AQI (US)
27AQI (US)
27AQI (US)
42AQI (US)
23AQI (US)
41AQI (US)
56AQI (US)
67AQI (US)
63AQI (US)
45AQI (US)
49AQI (US)
45AQI (US)
43AQI (US)
50AQI (US)
40AQI (US)
44AQI (US)
32AQI (US)
30AQI (US)
28AQI (US)
27AQI (US)
28AQI (US)
33AQI (US)
31AQI (US)
32AQI (US)
30AQI (US)
30AQI (US)
43AQI (US)
46AQI (US)
36AQI (US)
29AQI (US)
48AQI (US)
44AQI (US)
38AQI (US)
28AQI (US)
26AQI (US)
27AQI (US)
26AQI (US)
27AQI (US)
31AQI (US)
32AQI (US)
26AQI (US)
25AQI (US)
22AQI (US)
26AQI (US)
25AQI (US)
24AQI (US)
38AQI (US)
34AQI (US)
38AQI (US)
37AQI (US)
41AQI (US)
56AQI (US)
56AQI (US)
48AQI (US)
39AQI (US)
38AQI (US)
53AQI (US)
43AQI (US)
35AQI (US)
32AQI (US)
43AQI (US)
37AQI (US)
60AQI (US)
68AQI (US)
64AQI (US)
51AQI (US)
147AQI (US)
215AQI (US)
222AQI (US)
123AQI (US)
54AQI (US)
48AQI (US)
66AQI (US)
31AQI (US)
31AQI (US)
26AQI (US)
40AQI (US)
44AQI (US)
51AQI (US)
54AQI (US)
25AQI (US)
31AQI (US)
40AQI (US)
55AQI (US)
38AQI (US)
28AQI (US)
26AQI (US)
28AQI (US)
47AQI (US)
49AQI (US)
55AQI (US)
32AQI (US)
45AQI (US)
36AQI (US)
45AQI (US)
41AQI (US)
40AQI (US)
35AQI (US)
39AQI (US)
31AQI (US)
25AQI (US)
29AQI (US)
42AQI (US)
30AQI (US)
40AQI (US)
27AQI (US)
33AQI (US)
30AQI (US)
38AQI (US)
45AQI (US)
27AQI (US)
34AQI (US)
41AQI (US)
56AQI (US)
55AQI (US)
48AQI (US)
42AQI (US)
29AQI (US)
27AQI (US)
32AQI (US)
32AQI (US)
28AQI (US)
51AQI (US)
36AQI (US)
34AQI (US)
34AQI (US)
45AQI (US)
33AQI (US)
31AQI (US)
37AQI (US)
33AQI (US)
31AQI (US)
28AQI (US)
30AQI (US)
28AQI (US)
27AQI (US)
29AQI (US)
27AQI (US)
31AQI (US)
37AQI (US)
42AQI (US)
27AQI (US)
41AQI (US)
56AQI (US)
49AQI (US)
35AQI (US)
37AQI (US)
33AQI (US)
62AQI (US)
38AQI (US)
34AQI (US)
No. of days
202643AQI (US)
Highest AQI (US) recorded in
July62AQI (US)
Lowest AQI (US) recorded in
June33AQI (US)
202536AQI (US)
Highest AQI (US) recorded in
August48AQI (US)
Lowest AQI (US) recorded in
May24AQI (US)
Most & Least Polluted Years Over the Last 2 Years
Kitchener's annual 2026 AQI (US) (43) shows an average percentage change of 19.4% (worsened AQI (US)) compared to previous years: 2025 (36).