Calgary, Alberta, 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
Calgary, Alberta, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (1st July ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 28 of Good air quality, showing improvement over 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Jul - 2nd Jul 2025
Calgary, Alberta, Canada
5 AM1st Jul 2025
9 PM
4 AM2nd Jul 2025
40AQI
27AQI
30AQI
26AQI
In the last 24 hours,
Calgary's AQI reached its highest point of 40 at 6 AM during the Day, while the lowest point, 26, was recorded at 1 AM during the Night between 1st Jul and 2nd Jul 2025.
Day & Night AQI Trend : Jun - Jul 2025
Calgary, Alberta, Canada
12°C6/18°C
12°C8/17°C
14°C7/20°C
18°C9/26°C
19°C13/27°C
15°C9/21°C
18°C8/28°C
22°C15/32°C
18°C13/24°C
17°C12/23°C
14°C12/17°C
18°C13/24°C
16°C10/23°C
16°C10/24°C
17°C9/25°C
18°C11/25°C
18°C10/25°C
16°C10/23°C
12°C11/12°C
8°C7/10°C
10°C4/15°C
12°C5/19°C
15°C7/22°C
18°C10/24°C
18°C10/23°C
17°C9/25°C
15°C10/21°C
19°C11/26°C
21°C10/29°C
22°C12/31°C
0°C0/0°C
36AQI
36AQI
35AQI
35AQI
2025 Days Vs Air Quality
Calgary, Alberta, Canada
94%
171
6%
11
Total number of days with different AQI categories in last 183 days in 2025 (182 days remaining)
Under WHO’s Safe Air Quality Limits: 94%
Health Risk Level:
Very Low
In 2025, 94% of 183 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Calgary, Alberta, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
45AQI
53AQI
55AQI
33AQI
51AQI
54AQI
38AQI
29AQI
32AQI
35AQI
28AQI
37AQI
37AQI
33AQI
31AQI
31AQI
27AQI
30AQI
46AQI
49AQI
33AQI
32AQI
36AQI
28AQI
32AQI
38AQI
33AQI
35AQI
40AQI
38AQI
47AQI
44AQI
32AQI
34AQI
33AQI
33AQI
31AQI
45AQI
44AQI
40AQI
36AQI
35AQI
40AQI
54AQI
30AQI
26AQI
55AQI
45AQI
23AQI
31AQI
35AQI
23AQI
19AQI
17AQI
16AQI
24AQI
19AQI
19AQI
24AQI
30AQI
31AQI
21AQI
22AQI
23AQI
27AQI
18AQI
13AQI
24AQI
19AQI
18AQI
19AQI
30AQI
32AQI
35AQI
35AQI
40AQI
43AQI
40AQI
36AQI
29AQI
21AQI
23AQI
28AQI
24AQI
26AQI
26AQI
28AQI
21AQI
28AQI
25AQI
34AQI
31AQI
25AQI
27AQI
25AQI
27AQI
34AQI
21AQI
23AQI
28AQI
30AQI
32AQI
20AQI
29AQI
29AQI
23AQI
19AQI
25AQI
25AQI
20AQI
25AQI
17AQI
25AQI
36AQI
35AQI
33AQI
33AQI
31AQI
19AQI
19AQI
29AQI
31AQI
42AQI
23AQI
17AQI
28AQI
29AQI
29AQI
26AQI
32AQI
27AQI
28AQI
25AQI
34AQI
22AQI
38AQI
32AQI
34AQI
21AQI
17AQI
15AQI
20AQI
25AQI
24AQI
29AQI
28AQI
19AQI
23AQI
36AQI
28AQI
27AQI
19AQI
21AQI
27AQI
39AQI
37AQI
30AQI
39AQI
53AQI
55AQI
55AQI
57AQI
62AQI
50AQI
30AQI
26AQI
28AQI
37AQI
41AQI
34AQI
33AQI
25AQI
23AQI
37AQI
47AQI
48AQI
32AQI
28AQI
19AQI
16AQI
22AQI
28AQI
38AQI
32AQI
27AQI
27AQI
27AQI
36AQI
28AQI
No. of days
202531AQI
Highest AQI recorded in
January38AQI
Lowest AQI recorded in
April27AQI
202436AQI
Highest AQI recorded in
August53AQI
Lowest AQI recorded in
June21AQI
202343AQI
Highest AQI recorded in
May62AQI
Lowest AQI recorded in
April24AQI
202229AQI
Highest AQI recorded in
September53AQI
Lowest AQI recorded in
February20AQI
202130AQI
Highest AQI recorded in
July70AQI
Lowest AQI recorded in
May18AQI
202024AQI
Highest AQI recorded in
September32AQI
Lowest AQI recorded in
June16AQI
Most & Least Polluted Years Over the Last 6 Years
Calgary's annual 2025 AQI (31) shows an average percentage change of -0.1% (improved AQI) compared to previous years: 2020 (24), 2021 (30), 2022 (29), 2023 (43), 2024 (36).