Yellowhead County, 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
Yellowhead County, Alberta, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (15th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 47 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 16th Sep - 17th Sep 2025
Yellowhead County, Alberta, Canada
7 AM16th Sep 2025
8 PM
6 AM17th Sep 2025
58AQI
36AQI
53AQI
47AQI
In the last 24 hours,
Yellowhead County's AQI reached its highest point of 58 at 6 PM during the Day, while the lowest point, undefined, was recorded at 6 AM during the Night between 16th Sep and 17th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Yellowhead County, Alberta, Canada
15°C9/21°C
16°C10/21°C
13°C10/14°C
12°C6/18°C
14°C7/21°C
16°C10/21°C
18°C12/25°C
19°C13/26°C
20°C14/26°C
21°C14/27°C
22°C15/26°C
20°C14/26°C
19°C14/26°C
19°C14/25°C
19°C15/24°C
17°C13/22°C
22°C16/28°C
15°C11/18°C
15°C8/22°C
19°C13/25°C
18°C15/22°C
18°C12/23°C
18°C12/24°C
17°C11/22°C
18°C11/24°C
19°C13/25°C
19°C11/26°C
18°C13/22°C
16°C11/21°C
16°C9/24°C
--°C/°C
60AQI
56AQI
58AQI
55AQI
2025 Days Vs Air Quality
Yellowhead County, Alberta, Canada
87%
151
13%
22
0.5%
1
Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2025, 87% of 260 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
Yellowhead County, Alberta, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI
22AQI
20AQI
26AQI
30AQI
38AQI
24AQI
30AQI
21AQI
35AQI
31AQI
33AQI
39AQI
27AQI
22AQI
28AQI
28AQI
23AQI
19AQI
29AQI
26AQI
18AQI
26AQI
29AQI
20AQI
19AQI
15AQI
14AQI
22AQI
23AQI
36AQI
44AQI
21AQI
19AQI
17AQI
17AQI
28AQI
31AQI
35AQI
15AQI
17AQI
27AQI
28AQI
17AQI
19AQI
23AQI
19AQI
17AQI
22AQI
25AQI
20AQI
25AQI
21AQI
23AQI
20AQI
15AQI
19AQI
21AQI
24AQI
28AQI
26AQI
27AQI
21AQI
22AQI
34AQI
17AQI
24AQI
14AQI
14AQI
22AQI
22AQI
24AQI
23AQI
31AQI
35AQI
34AQI
46AQI
59AQI
64AQI
47AQI
20AQI
23AQI
27AQI
41AQI
39AQI
23AQI
19AQI
22AQI
25AQI
39AQI
40AQI
35AQI
24AQI
19AQI
14AQI
17AQI
21AQI
23AQI
31AQI
26AQI
19AQI
29AQI
21AQI
19AQI
30AQI
24AQI
23AQI
30AQI
25AQI
21AQI
24AQI
29AQI
36AQI
33AQI
38AQI
25AQI
34AQI
42AQI
23AQI
26AQI
37AQI
26AQI
27AQI
35AQI
36AQI
39AQI
43AQI
48AQI
51AQI
44AQI
31AQI
26AQI
24AQI
23AQI
19AQI
17AQI
22AQI
32AQI
18AQI
27AQI
20AQI
18AQI
24AQI
30AQI
23AQI
26AQI
30AQI
28AQI
17AQI
31AQI
39AQI
41AQI
51AQI
54AQI
56AQI
56AQI
55AQI
53AQI
48AQI
61AQI
77AQI
108AQI
99AQI
77AQI
73AQI
67AQI
86AQI
72AQI
67AQI
65AQI
73AQI
54AQI
56AQI
47AQI
28AQI
25AQI
23AQI
29AQI
30AQI
33AQI
72AQI
No. of days
202532AQI
Highest AQI recorded in
September72AQI
Lowest AQI recorded in
May23AQI
Most & Least Polluted Years Over the Last 1 Years
Yellowhead County's annual 2025 AQI (32) shows an average percentage change of NaN% (improved AQI) compared to previous years: .