Surrey, British Columbia, Canada Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Surrey, British Columbia, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 45 of Good air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Surrey, British Columbia, Canada
6 AM4th Oct 2025
7 PM
5 AM5th Oct 2025
56AQI
40AQI
50AQI
34AQI
In the last 24 hours,
Surrey's AQI reached its highest point of 56 at 11 AM during the Day, while the lowest point, 34, was recorded at 8 PM during the Night between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Surrey, British Columbia, Canada
19°C15/24°C
18°C14/26°C
17°C15/19°C
17°C15/21°C
18°C15/23°C
17°C15/23°C
15°C14/18°C
16°C14/18°C
16°C13/21°C
15°C14/16°C
16°C12/23°C
21°C12/31°C
19°C16/23°C
17°C14/23°C
15°C10/23°C
15°C11/21°C
16°C13/21°C
15°C9/22°C
17°C10/25°C
16°C11/23°C
13°C8/18°C
14°C9/19°C
15°C12/21°C
16°C12/21°C
15°C13/16°C
15°C13/20°C
15°C12/20°C
15°C13/21°C
12°C8/16°C
13°C10/18°C
--°C/°C
31AQI
29AQI
32AQI
30AQI
2025 Days Vs Air Quality
Surrey, British Columbia, Canada
96%
266
4%
11
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 278 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
Surrey, British Columbia, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
28AQI
25AQI
25AQI
21AQI
19AQI
25AQI
33AQI
29AQI
26AQI
24AQI
24AQI
29AQI
29AQI
36AQI
38AQI
42AQI
28AQI
27AQI
31AQI
29AQI
48AQI
41AQI
55AQI
34AQI
26AQI
31AQI
34AQI
39AQI
43AQI
54AQI
26AQI
18AQI
20AQI
20AQI
22AQI
24AQI
25AQI
29AQI
54AQI
48AQI
40AQI
23AQI
28AQI
29AQI
33AQI
33AQI
21AQI
29AQI
27AQI
19AQI
19AQI
20AQI
18AQI
16AQI
23AQI
17AQI
22AQI
21AQI
24AQI
28AQI
30AQI
26AQI
21AQI
22AQI
21AQI
24AQI
21AQI
36AQI
31AQI
34AQI
27AQI
23AQI
23AQI
23AQI
20AQI
23AQI
20AQI
22AQI
17AQI
18AQI
16AQI
17AQI
21AQI
20AQI
20AQI
16AQI
15AQI
16AQI
16AQI
17AQI
20AQI
20AQI
24AQI
29AQI
24AQI
24AQI
17AQI
14AQI
14AQI
15AQI
16AQI
17AQI
19AQI
23AQI
23AQI
25AQI
18AQI
21AQI
19AQI
20AQI
16AQI
21AQI
24AQI
28AQI
40AQI
37AQI
37AQI
25AQI
17AQI
22AQI
31AQI
32AQI
14AQI
16AQI
17AQI
21AQI
23AQI
17AQI
22AQI
23AQI
20AQI
21AQI
22AQI
21AQI
23AQI
21AQI
17AQI
13AQI
18AQI
12AQI
15AQI
19AQI
18AQI
20AQI
21AQI
16AQI
17AQI
23AQI
17AQI
19AQI
19AQI
19AQI
21AQI
23AQI
17AQI
20AQI
18AQI
18AQI
22AQI
23AQI
29AQI
30AQI
37AQI
30AQI
23AQI
25AQI
22AQI
19AQI
17AQI
16AQI
19AQI
20AQI
21AQI
25AQI
38AQI
34AQI
23AQI
16AQI
16AQI
18AQI
21AQI
21AQI
19AQI
18AQI
20AQI
27AQI
24AQI
22AQI
20AQI
16AQI
17AQI
23AQI
19AQI
19AQI
18AQI
21AQI
32AQI
35AQI
37AQI
26AQI
24AQI
28AQI
26AQI
27AQI
25AQI
18AQI
22AQI
29AQI
28AQI
31AQI
32AQI
26AQI
20AQI
19AQI
26AQI
41AQI
43AQI
42AQI
17AQI
20AQI
26AQI
29AQI
22AQI
25AQI
20AQI
23AQI
30AQI
13AQI
16AQI
19AQI
24AQI
23AQI
25AQI
26AQI
32AQI
41AQI
46AQI
54AQI
54AQI
55AQI
57AQI
42AQI
47AQI
47AQI
43AQI
72AQI
62AQI
66AQI
63AQI
41AQI
30AQI
45AQI
29AQI
32AQI
25AQI
25AQI
33AQI
22AQI
28AQI
44AQI
26AQI
29AQI
39AQI
33AQI
25AQI
30AQI
39AQI
21AQI
18AQI
16AQI
23AQI
24AQI
14AQI
14AQI
12AQI
27AQI
45AQI
32AQI
26AQI
22AQI
22AQI
20AQI
23AQI
24AQI
32AQI
35AQI
25AQI
No. of days
202526AQI
Highest AQI recorded in
September35AQI
Lowest AQI recorded in
May20AQI
202421AQI
Highest AQI recorded in
December27AQI
Lowest AQI recorded in
June17AQI
202323AQI
Highest AQI recorded in
August32AQI
Lowest AQI recorded in
January17AQI
202218AQI
Highest AQI recorded in
October46AQI
Lowest AQI recorded in
January9AQI
202121AQI
Highest AQI recorded in
August44AQI
Lowest AQI recorded in
December8AQI
202028AQI
Highest AQI recorded in
September61AQI
Lowest AQI recorded in
June18AQI
Most & Least Polluted Years Over the Last 6 Years
Surrey's annual 2025 AQI (26) shows an average percentage change of 19.04% (worsened AQI) compared to previous years: 2020 (28), 2021 (21), 2022 (18), 2023 (23), 2024 (21).