Downtown, Calgary, Alberta, Canada Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Downtown, Calgary, Alberta, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (11th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 23 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 11th Aug - 12th Aug 2025
Downtown, Calgary, Alberta, Canada
5 AM11th Aug 2025
9 PM
4 AM12th Aug 2025
26AQI
17AQI
38AQI
19AQI
In the last 24 hours,
Downtown's AQI reached its highest point of 38 at 4 AM during the Night, while the lowest point, 17, was recorded at 10 AM during the Day between 11th Aug and 12th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Downtown, Calgary, Alberta, Canada
21°C14/30°C
13°C11/13°C
14°C10/21°C
15°C6/24°C
14°C12/17°C
15°C7/22°C
17°C12/22°C
14°C11/19°C
15°C11/19°C
8°C7/8°C
15°C5/24°C
21°C11/29°C
16°C12/21°C
13°C11/17°C
15°C13/18°C
14°C12/18°C
18°C13/24°C
20°C13/26°C
21°C13/29°C
21°C13/28°C
20°C13/25°C
17°C14/22°C
18°C12/26°C
19°C11/26°C
19°C11/28°C
17°C13/22°C
15°C12/20°C
18°C11/23°C
20°C13/27°C
19°C15/25°C
--°C/°C
40AQI
39AQI
39AQI
38AQI
2025 Days Vs Air Quality
Downtown, Calgary, Alberta, Canada
92%
128
8%
11
Total number of days with different AQI categories in last 224 days in 2025 (141 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2025, 92% of 224 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
Downtown, Calgary, Alberta, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI
29AQI
31AQI
22AQI
31AQI
28AQI
36AQI
34AQI
27AQI
29AQI
33AQI
33AQI
40AQI
25AQI
26AQI
32AQI
31AQI
36AQI
20AQI
34AQI
31AQI
25AQI
18AQI
33AQI
29AQI
22AQI
30AQI
18AQI
30AQI
40AQI
41AQI
38AQI
35AQI
35AQI
18AQI
20AQI
34AQI
37AQI
46AQI
24AQI
15AQI
33AQI
33AQI
33AQI
27AQI
36AQI
28AQI
31AQI
28AQI
39AQI
24AQI
45AQI
37AQI
38AQI
23AQI
18AQI
16AQI
21AQI
29AQI
28AQI
33AQI
32AQI
21AQI
27AQI
38AQI
32AQI
33AQI
20AQI
21AQI
29AQI
44AQI
42AQI
35AQI
41AQI
55AQI
55AQI
57AQI
63AQI
71AQI
54AQI
31AQI
27AQI
32AQI
40AQI
45AQI
37AQI
34AQI
28AQI
26AQI
37AQI
49AQI
48AQI
34AQI
29AQI
19AQI
16AQI
25AQI
32AQI
36AQI
29AQI
25AQI
26AQI
23AQI
28AQI
33AQI
34AQI
25AQI
27AQI
34AQI
26AQI
21AQI
40AQI
49AQI
51AQI
49AQI
35AQI
29AQI
30AQI
46AQI
50AQI
46AQI
38AQI
30AQI
42AQI
48AQI
47AQI
51AQI
52AQI
55AQI
53AQI
43AQI
41AQI
41AQI
35AQI
29AQI
23AQI
28AQI
32AQI
23AQI
29AQI
30AQI
30AQI
38AQI
37AQI
37AQI
No. of days
202534AQI
Highest AQI recorded in
June38AQI
Lowest AQI recorded in
March29AQI
Most & Least Polluted Years Over the Last 1 Years
Downtown's annual 2025 AQI (34) shows an average percentage change of NaN% (improved AQI) compared to previous years: .