Kingston, 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
Kingston, Ontario, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (29th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 32 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 29th Sep - 30th Sep 2025
Kingston, Ontario, Canada
6 AM29th Sep 2025
7 PM
5 AM30th Sep 2025
28AQI
10AQI
55AQI
16AQI
In the last 24 hours,
Kingston's AQI reached its highest point of 55 at 5 AM during the Night, while the lowest point, 10, was recorded at 3 PM during the Day between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Kingston, Ontario, Canada
18°C10/24°C
19°C11/26°C
19°C15/24°C
19°C13/26°C
19°C14/27°C
18°C13/24°C
17°C14/22°C
17°C12/23°C
14°C8/20°C
15°C8/20°C
17°C11/21°C
17°C8/24°C
17°C8/25°C
17°C15/22°C
19°C13/26°C
19°C10/26°C
19°C9/28°C
17°C10/23°C
19°C13/24°C
15°C10/20°C
12°C5/19°C
15°C4/27°C
19°C16/24°C
19°C16/22°C
19°C15/27°C
18°C17/20°C
18°C15/22°C
17°C14/21°C
19°C16/26°C
16°C9/23°C
--°C/°C
22AQI
17AQI
26AQI
22AQI
2025 Days Vs Air Quality
Kingston, Ontario, Canada
88%
165
12%
22
Total number of days with different AQI categories in last 273 days in 2025 (92 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 273 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
Kingston, Ontario, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
20AQI
19AQI
19AQI
25AQI
27AQI
17AQI
18AQI
23AQI
17AQI
17AQI
17AQI
20AQI
17AQI
17AQI
27AQI
31AQI
45AQI
26AQI
23AQI
23AQI
15AQI
16AQI
23AQI
47AQI
16AQI
17AQI
21AQI
14AQI
23AQI
28AQI
26AQI
14AQI
20AQI
26AQI
16AQI
17AQI
28AQI
17AQI
16AQI
16AQI
14AQI
28AQI
16AQI
19AQI
21AQI
18AQI
20AQI
30AQI
25AQI
23AQI
27AQI
36AQI
17AQI
13AQI
12AQI
16AQI
13AQI
11AQI
15AQI
15AQI
19AQI
23AQI
30AQI
19AQI
36AQI
25AQI
13AQI
17AQI
25AQI
49AQI
48AQI
54AQI
59AQI
70AQI
52AQI
38AQI
50AQI
64AQI
33AQI
28AQI
33AQI
40AQI
26AQI
28AQI
27AQI
26AQI
48AQI
50AQI
54AQI
55AQI
45AQI
31AQI
28AQI
30AQI
26AQI
28AQI
36AQI
34AQI
49AQI
31AQI
35AQI
50AQI
49AQI
25AQI
27AQI
44AQI
45AQI
49AQI
40AQI
41AQI
49AQI
57AQI
38AQI
20AQI
22AQI
23AQI
33AQI
18AQI
19AQI
34AQI
37AQI
52AQI
46AQI
53AQI
48AQI
53AQI
61AQI
31AQI
27AQI
63AQI
88AQI
80AQI
58AQI
71AQI
70AQI
67AQI
62AQI
52AQI
53AQI
43AQI
42AQI
34AQI
48AQI
40AQI
15AQI
19AQI
18AQI
17AQI
26AQI
27AQI
29AQI
21AQI
16AQI
17AQI
22AQI
18AQI
17AQI
22AQI
26AQI
29AQI
29AQI
29AQI
32AQI
28AQI
20AQI
18AQI
19AQI
24AQI
29AQI
29AQI
37AQI
43AQI
36AQI
33AQI
32AQI
35AQI
23AQI
17AQI
20AQI
26AQI
35AQI
38AQI
24AQI
22AQI
21AQI
22AQI
32AQI
22AQI
22AQI
20AQI
39AQI
39AQI
39AQI
28AQI
No. of days
202531AQI
Highest AQI recorded in
July39AQI
Lowest AQI recorded in
May20AQI
Most & Least Polluted Years Over the Last 1 Years
Kingston's annual 2025 AQI (31) shows an average percentage change of NaN% (improved AQI) compared to previous years: .