Lethbridge, Alberta, 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
Lethbridge, Alberta, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (25th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 51 of Moderate air quality on the same day.
Day & Night AQI Trend: 24th Sep - 25th Sep 2026
Lethbridge, Alberta, Canada
7 AM24th Sep 2026
7 PM
6 AM25th Sep 2026
65AQI
30AQI
62AQI
43AQI
In the last 24 hours,
Lethbridge's AQI reached its highest point of 65 at 11 AM during the Day, while the lowest point, 30, was recorded at 7 AM during the Day between 24th Sep and 25th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Lethbridge, Alberta, Canada
24°C17/32°C
22°C14/29°C
17°C9/25°C
14°C10/18°C
17°C10/27°C
19°C9/29°C
19°C14/28°C
16°C11/23°C
14°C7/23°C
13°C10/16°C
13°C10/15°C
13°C12/14°C
15°C11/22°C
16°C11/25°C
17°C11/24°C
11°C8/14°C
10°C5/14°C
11°C5/16°C
11°C8/16°C
10°C8/12°C
12°C9/18°C
15°C8/22°C
17°C11/23°C
16°C11/23°C
18°C11/25°C
19°C12/27°C
19°C13/27°C
18°C13/25°C
15°C9/23°C
19°C12/30°C
44AQI
41AQI
42AQI
40AQI
2026 Days Vs Air Quality
Lethbridge, Alberta, Canada
77%
205
20%
52
3%
7
0.3%
1
Total number of days with different AQI categories in last 268 days in 2026 (97 days remaining)
Under WHO’s Safe Air Quality Limits: 77%
Health Risk Level:
Low
In 2026, 77% of 268 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
Lethbridge, Alberta, Canada
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
73AQI (US)
55AQI (US)
30AQI (US)
41AQI (US)
50AQI (US)
26AQI (US)
14AQI (US)
16AQI (US)
18AQI (US)
10AQI (US)
8AQI (US)
11AQI (US)
10AQI (US)
13AQI (US)
14AQI (US)
14AQI (US)
13AQI (US)
10AQI (US)
29AQI (US)
34AQI (US)
23AQI (US)
42AQI (US)
43AQI (US)
45AQI (US)
47AQI (US)
54AQI (US)
62AQI (US)
33AQI (US)
42AQI (US)
36AQI (US)
40AQI (US)
38AQI (US)
50AQI (US)
42AQI (US)
39AQI (US)
38AQI (US)
34AQI (US)
29AQI (US)
32AQI (US)
35AQI (US)
30AQI (US)
25AQI (US)
31AQI (US)
26AQI (US)
45AQI (US)
32AQI (US)
31AQI (US)
49AQI (US)
27AQI (US)
30AQI (US)
25AQI (US)
49AQI (US)
61AQI (US)
59AQI (US)
59AQI (US)
29AQI (US)
28AQI (US)
31AQI (US)
32AQI (US)
41AQI (US)
42AQI (US)
53AQI (US)
71AQI (US)
66AQI (US)
37AQI (US)
41AQI (US)
38AQI (US)
29AQI (US)
26AQI (US)
36AQI (US)
38AQI (US)
59AQI (US)
47AQI (US)
37AQI (US)
27AQI (US)
30AQI (US)
30AQI (US)
30AQI (US)
37AQI (US)
36AQI (US)
31AQI (US)
34AQI (US)
46AQI (US)
41AQI (US)
47AQI (US)
33AQI (US)
40AQI (US)
66AQI (US)
52AQI (US)
42AQI (US)
31AQI (US)
32AQI (US)
34AQI (US)
20AQI (US)
32AQI (US)
25AQI (US)
23AQI (US)
26AQI (US)
32AQI (US)
25AQI (US)
28AQI (US)
57AQI (US)
55AQI (US)
33AQI (US)
32AQI (US)
26AQI (US)
24AQI (US)
23AQI (US)
24AQI (US)
22AQI (US)
22AQI (US)
21AQI (US)
23AQI (US)
29AQI (US)
35AQI (US)
32AQI (US)
34AQI (US)
25AQI (US)
25AQI (US)
23AQI (US)
22AQI (US)
22AQI (US)
22AQI (US)
23AQI (US)
23AQI (US)
23AQI (US)
24AQI (US)
18AQI (US)
21AQI (US)
26AQI (US)
24AQI (US)
38AQI (US)
41AQI (US)
36AQI (US)
31AQI (US)
25AQI (US)
27AQI (US)
30AQI (US)
30AQI (US)
28AQI (US)
21AQI (US)
22AQI (US)
25AQI (US)
38AQI (US)
48AQI (US)
21AQI (US)
35AQI (US)
26AQI (US)
26AQI (US)
28AQI (US)
33AQI (US)
32AQI (US)
22AQI (US)
17AQI (US)
22AQI (US)
24AQI (US)
22AQI (US)
24AQI (US)
21AQI (US)
27AQI (US)
23AQI (US)
20AQI (US)
22AQI (US)
27AQI (US)
16AQI (US)
22AQI (US)
22AQI (US)
15AQI (US)
15AQI (US)
15AQI (US)
26AQI (US)
23AQI (US)
18AQI (US)
21AQI (US)
24AQI (US)
25AQI (US)
50AQI (US)
121AQI (US)
48AQI (US)
23AQI (US)
17AQI (US)
15AQI (US)
25AQI (US)
21AQI (US)
22AQI (US)
27AQI (US)
53AQI (US)
30AQI (US)
17AQI (US)
23AQI (US)
30AQI (US)
38AQI (US)
39AQI (US)
51AQI (US)
53AQI (US)
51AQI (US)
69AQI (US)
61AQI (US)
63AQI (US)
66AQI (US)
126AQI (US)
124AQI (US)
74AQI (US)
90AQI (US)
69AQI (US)
84AQI (US)
62AQI (US)
71AQI (US)
111AQI (US)
138AQI (US)
171AQI (US)
55AQI (US)
52AQI (US)
54AQI (US)
84AQI (US)
63AQI (US)
77AQI (US)
74AQI (US)
77AQI (US)
109AQI (US)
62AQI (US)
64AQI (US)
55AQI (US)
53AQI (US)
65AQI (US)
64AQI (US)
108AQI (US)
98AQI (US)
62AQI (US)
82AQI (US)
68AQI (US)
48AQI (US)
45AQI (US)
40AQI (US)
47AQI (US)
52AQI (US)
54AQI (US)
62AQI (US)
35AQI (US)
36AQI (US)
39AQI (US)
50AQI (US)
36AQI (US)
33AQI (US)
30AQI (US)
39AQI (US)
55AQI (US)
47AQI (US)
31AQI (US)
36AQI (US)
37AQI (US)
33AQI (US)
33AQI (US)
41AQI (US)
33AQI (US)
38AQI (US)
38AQI (US)
43AQI (US)
44AQI (US)
34AQI (US)
33AQI (US)
41AQI (US)
48AQI (US)
49AQI (US)
51AQI (US)
31AQI (US)
37AQI (US)
41AQI (US)
29AQI (US)
27AQI (US)
27AQI (US)
53AQI (US)
69AQI (US)
40AQI (US)
No. of days
202640AQI (US)
Highest AQI (US) recorded in
August69AQI (US)
Lowest AQI (US) recorded in
June27AQI (US)
202531AQI (US)
Highest AQI (US) recorded in
September55AQI (US)
Lowest AQI (US) recorded in
April20AQI (US)
202428AQI (US)
Highest AQI (US) recorded in
July42AQI (US)
Lowest AQI (US) recorded in
May18AQI (US)
202329AQI (US)
Highest AQI (US) recorded in
June53AQI (US)
Lowest AQI (US) recorded in
December12AQI (US)
202222AQI (US)
Highest AQI (US) recorded in
September49AQI (US)
Lowest AQI (US) recorded in
February11AQI (US)
202126AQI (US)
Highest AQI (US) recorded in
July68AQI (US)
Lowest AQI (US) recorded in
November12AQI (US)
202023AQI (US)
Highest AQI (US) recorded in
September38AQI (US)
Lowest AQI (US) recorded in
June13AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Lethbridge's annual 2026 AQI (US) (40) shows an average percentage change of 53.2% (worsened AQI (US)) compared to previous years: 2020 (23), 2021 (26), 2022 (22), 2023 (29), 2024 (28), 2025 (31).