Horseshoe Bay, West Vancouver, British Columbia, 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
Horseshoe Bay, West Vancouver, British Columbia, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (17th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 42 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
Horseshoe Bay, West Vancouver, British Columbia, Canada
6 AM16th Sep 2025
7 PM
5 AM17th Sep 2025
33AQI
21AQI
44AQI
26AQI
In the last 24 hours,
Horseshoe Bay's AQI reached its highest point of 44 at 4 AM during the Night, while the lowest point, 21, was recorded at 11 AM during the Day between 16th Sep and 17th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Horseshoe Bay, West Vancouver, British Columbia, Canada
--°C/°C
18°C16/20°C
17°C15/19°C
19°C14/24°C
23°C18/29°C
25°C20/31°C
25°C21/30°C
24°C20/28°C
23°C20/26°C
21°C19/24°C
21°C18/24°C
21°C19/23°C
19°C17/21°C
19°C16/22°C
19°C17/21°C
19°C16/23°C
22°C19/25°C
21°C17/25°C
20°C18/23°C
20°C17/24°C
17°C16/18°C
17°C15/20°C
17°C15/20°C
17°C16/21°C
16°C14/18°C
16°C14/18°C
17°C15/19°C
16°C14/17°C
16°C12/20°C
21°C16/29°C
20°C16/22°C
45AQI
45AQI
45AQI
42AQI
2025 Days Vs Air Quality
Horseshoe Bay, West Vancouver, British Columbia, Canada
96%
250
4%
10
Total number of days with different AQI categories in last 261 days in 2025 (104 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 261 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
Horseshoe Bay, West Vancouver, British Columbia, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI
22AQI
20AQI
20AQI
20AQI
23AQI
32AQI
26AQI
23AQI
22AQI
21AQI
24AQI
25AQI
25AQI
27AQI
34AQI
26AQI
23AQI
28AQI
28AQI
43AQI
34AQI
42AQI
28AQI
27AQI
26AQI
27AQI
27AQI
36AQI
47AQI
22AQI
18AQI
22AQI
21AQI
21AQI
22AQI
22AQI
27AQI
54AQI
45AQI
39AQI
21AQI
24AQI
26AQI
25AQI
21AQI
31AQI
30AQI
27AQI
20AQI
21AQI
21AQI
20AQI
18AQI
22AQI
17AQI
21AQI
21AQI
22AQI
24AQI
24AQI
22AQI
19AQI
21AQI
18AQI
19AQI
19AQI
24AQI
27AQI
32AQI
22AQI
21AQI
21AQI
20AQI
19AQI
21AQI
19AQI
21AQI
17AQI
19AQI
17AQI
18AQI
19AQI
20AQI
20AQI
16AQI
15AQI
14AQI
15AQI
16AQI
16AQI
17AQI
17AQI
19AQI
23AQI
21AQI
14AQI
13AQI
14AQI
15AQI
15AQI
17AQI
16AQI
19AQI
17AQI
21AQI
16AQI
19AQI
17AQI
16AQI
15AQI
15AQI
17AQI
20AQI
32AQI
28AQI
28AQI
21AQI
16AQI
20AQI
24AQI
25AQI
13AQI
14AQI
15AQI
19AQI
20AQI
18AQI
18AQI
18AQI
17AQI
16AQI
19AQI
22AQI
20AQI
17AQI
14AQI
12AQI
16AQI
11AQI
13AQI
15AQI
17AQI
18AQI
18AQI
16AQI
15AQI
18AQI
17AQI
19AQI
17AQI
15AQI
18AQI
20AQI
17AQI
17AQI
17AQI
16AQI
21AQI
22AQI
27AQI
28AQI
37AQI
29AQI
22AQI
24AQI
22AQI
19AQI
17AQI
16AQI
18AQI
20AQI
20AQI
26AQI
36AQI
36AQI
24AQI
18AQI
16AQI
18AQI
23AQI
21AQI
20AQI
20AQI
20AQI
21AQI
21AQI
21AQI
20AQI
15AQI
17AQI
21AQI
20AQI
19AQI
17AQI
19AQI
30AQI
38AQI
36AQI
28AQI
26AQI
28AQI
27AQI
25AQI
27AQI
21AQI
22AQI
27AQI
29AQI
33AQI
32AQI
25AQI
21AQI
20AQI
27AQI
41AQI
46AQI
44AQI
17AQI
21AQI
23AQI
28AQI
24AQI
24AQI
19AQI
23AQI
30AQI
13AQI
17AQI
19AQI
24AQI
21AQI
24AQI
25AQI
29AQI
45AQI
49AQI
55AQI
55AQI
56AQI
59AQI
48AQI
52AQI
49AQI
44AQI
75AQI
83AQI
83AQI
77AQI
50AQI
34AQI
44AQI
34AQI
36AQI
30AQI
30AQI
35AQI
22AQI
26AQI
42AQI
27AQI
25AQI
20AQI
18AQI
17AQI
22AQI
24AQI
32AQI
47AQI
No. of days
202525AQI
Highest AQI recorded in
September47AQI
Lowest AQI recorded in
May17AQI
202419AQI
Highest AQI recorded in
December26AQI
Lowest AQI recorded in
January10AQI
202319AQI
Highest AQI recorded in
August37AQI
Lowest AQI recorded in
December11AQI
202221AQI
Highest AQI recorded in
October38AQI
Lowest AQI recorded in
August15AQI
202117AQI
Highest AQI recorded in
August26AQI
Lowest AQI recorded in
November13AQI
202022AQI
Highest AQI recorded in
September53AQI
Lowest AQI recorded in
December14AQI
Most & Least Polluted Years Over the Last 6 Years
Horseshoe Bay's annual 2025 AQI (25) shows an average percentage change of 27.3% (worsened AQI) compared to previous years: 2020 (22), 2021 (17), 2022 (21), 2023 (19), 2024 (19).