Calgary, 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
Calgary, 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 57 of Moderate air quality on the same day.
Day & Night AQI Trend: 24th Sep - 25th Sep 2026
Calgary, Alberta, Canada
7 AM24th Sep 2026
8 PM
6 AM25th Sep 2026
56AQI
40AQI
56AQI
39AQI
In the last 24 hours,
Calgary's AQI reached its highest point of 56 at 11 AM during the Day, while the lowest point, 39, was recorded at 8 PM during the Night between 24th Sep and 25th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Calgary, Alberta, Canada
22°C15/29°C
19°C14/26°C
17°C9/25°C
13°C9/18°C
17°C11/25°C
18°C11/29°C
19°C13/26°C
17°C12/21°C
13°C8/18°C
10°C8/11°C
12°C8/16°C
12°C11/14°C
15°C9/22°C
19°C13/25°C
13°C8/17°C
8°C5/11°C
8°C4/12°C
9°C4/15°C
10°C7/13°C
8°C7/9°C
10°C4/18°C
13°C7/21°C
14°C8/21°C
15°C9/21°C
16°C9/24°C
18°C11/27°C
16°C12/20°C
14°C9/21°C
12°C7/18°C
16°C10/26°C
49AQI
42AQI
47AQI
44AQI
2026 Days Vs Air Quality
Calgary, Alberta, Canada
84%
222
14%
38
2%
5
Total number of days with different AQI categories in last 268 days in 2026 (97 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2026, 84% 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
Calgary, Alberta, Canada
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
45AQI (US)
30AQI (US)
29AQI (US)
41AQI (US)
49AQI (US)
34AQI (US)
15AQI (US)
26AQI (US)
33AQI (US)
18AQI (US)
19AQI (US)
23AQI (US)
15AQI (US)
21AQI (US)
19AQI (US)
21AQI (US)
22AQI (US)
15AQI (US)
32AQI (US)
27AQI (US)
24AQI (US)
48AQI (US)
46AQI (US)
48AQI (US)
47AQI (US)
53AQI (US)
45AQI (US)
41AQI (US)
47AQI (US)
41AQI (US)
38AQI (US)
44AQI (US)
46AQI (US)
48AQI (US)
45AQI (US)
46AQI (US)
40AQI (US)
38AQI (US)
40AQI (US)
42AQI (US)
31AQI (US)
26AQI (US)
23AQI (US)
33AQI (US)
41AQI (US)
31AQI (US)
36AQI (US)
39AQI (US)
32AQI (US)
33AQI (US)
39AQI (US)
49AQI (US)
42AQI (US)
49AQI (US)
45AQI (US)
35AQI (US)
28AQI (US)
30AQI (US)
33AQI (US)
30AQI (US)
44AQI (US)
46AQI (US)
45AQI (US)
42AQI (US)
24AQI (US)
33AQI (US)
38AQI (US)
32AQI (US)
23AQI (US)
33AQI (US)
36AQI (US)
34AQI (US)
32AQI (US)
22AQI (US)
25AQI (US)
34AQI (US)
32AQI (US)
31AQI (US)
35AQI (US)
29AQI (US)
26AQI (US)
24AQI (US)
35AQI (US)
32AQI (US)
31AQI (US)
31AQI (US)
28AQI (US)
35AQI (US)
31AQI (US)
30AQI (US)
33AQI (US)
26AQI (US)
31AQI (US)
22AQI (US)
25AQI (US)
22AQI (US)
22AQI (US)
19AQI (US)
23AQI (US)
25AQI (US)
29AQI (US)
30AQI (US)
38AQI (US)
30AQI (US)
30AQI (US)
20AQI (US)
16AQI (US)
18AQI (US)
25AQI (US)
25AQI (US)
24AQI (US)
27AQI (US)
20AQI (US)
26AQI (US)
23AQI (US)
20AQI (US)
25AQI (US)
25AQI (US)
20AQI (US)
19AQI (US)
20AQI (US)
26AQI (US)
26AQI (US)
22AQI (US)
19AQI (US)
23AQI (US)
23AQI (US)
21AQI (US)
20AQI (US)
21AQI (US)
21AQI (US)
36AQI (US)
37AQI (US)
38AQI (US)
26AQI (US)
32AQI (US)
30AQI (US)
21AQI (US)
28AQI (US)
22AQI (US)
23AQI (US)
18AQI (US)
23AQI (US)
25AQI (US)
31AQI (US)
21AQI (US)
25AQI (US)
29AQI (US)
30AQI (US)
26AQI (US)
27AQI (US)
35AQI (US)
18AQI (US)
18AQI (US)
22AQI (US)
24AQI (US)
19AQI (US)
27AQI (US)
21AQI (US)
24AQI (US)
22AQI (US)
17AQI (US)
19AQI (US)
17AQI (US)
18AQI (US)
15AQI (US)
17AQI (US)
18AQI (US)
15AQI (US)
14AQI (US)
20AQI (US)
19AQI (US)
17AQI (US)
18AQI (US)
25AQI (US)
27AQI (US)
62AQI (US)
105AQI (US)
69AQI (US)
24AQI (US)
18AQI (US)
16AQI (US)
17AQI (US)
15AQI (US)
19AQI (US)
24AQI (US)
47AQI (US)
32AQI (US)
19AQI (US)
23AQI (US)
28AQI (US)
28AQI (US)
28AQI (US)
35AQI (US)
46AQI (US)
60AQI (US)
58AQI (US)
49AQI (US)
68AQI (US)
72AQI (US)
129AQI (US)
147AQI (US)
81AQI (US)
69AQI (US)
58AQI (US)
55AQI (US)
46AQI (US)
50AQI (US)
95AQI (US)
126AQI (US)
108AQI (US)
51AQI (US)
49AQI (US)
51AQI (US)
76AQI (US)
58AQI (US)
65AQI (US)
81AQI (US)
66AQI (US)
75AQI (US)
56AQI (US)
47AQI (US)
52AQI (US)
44AQI (US)
54AQI (US)
60AQI (US)
73AQI (US)
67AQI (US)
64AQI (US)
64AQI (US)
74AQI (US)
55AQI (US)
43AQI (US)
42AQI (US)
50AQI (US)
54AQI (US)
75AQI (US)
72AQI (US)
42AQI (US)
46AQI (US)
39AQI (US)
52AQI (US)
46AQI (US)
40AQI (US)
32AQI (US)
39AQI (US)
45AQI (US)
58AQI (US)
42AQI (US)
40AQI (US)
48AQI (US)
40AQI (US)
40AQI (US)
46AQI (US)
35AQI (US)
40AQI (US)
46AQI (US)
50AQI (US)
44AQI (US)
41AQI (US)
47AQI (US)
48AQI (US)
53AQI (US)
51AQI (US)
57AQI (US)
33AQI (US)
38AQI (US)
32AQI (US)
25AQI (US)
25AQI (US)
25AQI (US)
49AQI (US)
63AQI (US)
45AQI (US)
No. of days
202637AQI (US)
Highest AQI (US) recorded in
August63AQI (US)
Lowest AQI (US) recorded in
June25AQI (US)
202535AQI (US)
Highest AQI (US) recorded in
September59AQI (US)
Lowest AQI (US) recorded in
May27AQI (US)
202436AQI (US)
Highest AQI (US) recorded in
August53AQI (US)
Lowest AQI (US) recorded in
June21AQI (US)
202343AQI (US)
Highest AQI (US) recorded in
May62AQI (US)
Lowest AQI (US) recorded in
April24AQI (US)
202228AQI (US)
Highest AQI (US) recorded in
September53AQI (US)
Lowest AQI (US) recorded in
May20AQI (US)
202130AQI (US)
Highest AQI (US) recorded in
July70AQI (US)
Lowest AQI (US) recorded in
May18AQI (US)
202024AQI (US)
Highest AQI (US) recorded in
September32AQI (US)
Lowest AQI (US) recorded in
June16AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Calgary's annual 2026 AQI (US) (37) shows an average percentage change of 17.3% (worsened AQI (US)) compared to previous years: 2020 (24), 2021 (30), 2022 (28), 2023 (43), 2024 (36), 2025 (35).