Fort St John, 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
Fort St John, 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 3rd highest AQI at 18 of Good air quality, showing improvement over 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Fort St John, British Columbia, Canada
6 AM4th Oct 2025
7 PM
5 AM5th Oct 2025
30AQI
15AQI
28AQI
13AQI
In the last 24 hours,
Fort St John's AQI reached its highest point of 30 at 1 PM during the Day, while the lowest point, 13, was recorded at 8 PM during the Night between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Fort St John, British Columbia, Canada
15°C5/25°C
20°C9/29°C
19°C12/25°C
17°C9/25°C
18°C13/22°C
15°C8/22°C
17°C9/26°C
18°C13/25°C
14°C12/17°C
14°C9/19°C
14°C10/19°C
14°C6/24°C
17°C7/27°C
12°C8/17°C
13°C6/20°C
14°C8/21°C
11°C8/15°C
11°C6/15°C
10°C5/15°C
9°C4/14°C
8°C4/14°C
8°C4/13°C
8°C2/13°C
6°C1/11°C
7°C5/10°C
8°C6/11°C
8°C5/12°C
9°C5/15°C
10°C7/13°C
5°C4/8°C
--°C/°C
43AQI
37AQI
43AQI
42AQI
2025 Days Vs Air Quality
Fort St John, British Columbia, Canada
92%
256
6%
18
0.7%
2
0.3%
1
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2025, 92% 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
Fort St John, British Columbia, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
31AQI
33AQI
44AQI
42AQI
47AQI
34AQI
28AQI
23AQI
21AQI
20AQI
23AQI
22AQI
23AQI
21AQI
28AQI
20AQI
27AQI
29AQI
26AQI
23AQI
25AQI
22AQI
22AQI
20AQI
21AQI
19AQI
22AQI
22AQI
20AQI
26AQI
24AQI
26AQI
30AQI
32AQI
36AQI
26AQI
32AQI
33AQI
35AQI
29AQI
29AQI
31AQI
27AQI
22AQI
24AQI
35AQI
41AQI
44AQI
32AQI
36AQI
27AQI
24AQI
21AQI
22AQI
22AQI
21AQI
21AQI
21AQI
22AQI
27AQI
23AQI
27AQI
32AQI
23AQI
17AQI
18AQI
23AQI
20AQI
21AQI
18AQI
20AQI
17AQI
19AQI
19AQI
24AQI
22AQI
20AQI
21AQI
20AQI
18AQI
18AQI
16AQI
20AQI
24AQI
17AQI
17AQI
20AQI
24AQI
29AQI
22AQI
25AQI
27AQI
27AQI
26AQI
27AQI
28AQI
23AQI
20AQI
29AQI
19AQI
15AQI
16AQI
15AQI
15AQI
13AQI
25AQI
27AQI
15AQI
14AQI
14AQI
14AQI
14AQI
23AQI
36AQI
23AQI
15AQI
22AQI
15AQI
16AQI
26AQI
26AQI
23AQI
15AQI
20AQI
19AQI
18AQI
17AQI
16AQI
16AQI
17AQI
21AQI
20AQI
18AQI
19AQI
17AQI
16AQI
19AQI
18AQI
12AQI
14AQI
23AQI
22AQI
21AQI
19AQI
19AQI
18AQI
21AQI
33AQI
18AQI
18AQI
18AQI
23AQI
42AQI
46AQI
22AQI
23AQI
93AQI
43AQI
40AQI
166AQI
114AQI
84AQI
59AQI
51AQI
37AQI
30AQI
29AQI
35AQI
24AQI
21AQI
20AQI
22AQI
34AQI
42AQI
36AQI
25AQI
22AQI
16AQI
16AQI
17AQI
17AQI
17AQI
17AQI
18AQI
21AQI
22AQI
22AQI
20AQI
16AQI
17AQI
24AQI
19AQI
23AQI
30AQI
41AQI
29AQI
46AQI
50AQI
48AQI
50AQI
39AQI
28AQI
34AQI
36AQI
23AQI
38AQI
33AQI
31AQI
41AQI
47AQI
44AQI
46AQI
50AQI
42AQI
22AQI
30AQI
30AQI
28AQI
26AQI
27AQI
28AQI
20AQI
19AQI
20AQI
25AQI
30AQI
19AQI
14AQI
16AQI
21AQI
21AQI
17AQI
30AQI
29AQI
39AQI
41AQI
43AQI
50AQI
49AQI
50AQI
52AQI
61AQI
94AQI
92AQI
108AQI
78AQI
70AQI
84AQI
87AQI
90AQI
68AQI
63AQI
61AQI
75AQI
54AQI
48AQI
36AQI
33AQI
50AQI
42AQI
31AQI
37AQI
33AQI
24AQI
18AQI
19AQI
22AQI
20AQI
15AQI
15AQI
16AQI
17AQI
30AQI
34AQI
16AQI
18AQI
26AQI
29AQI
21AQI
21AQI
19AQI
42AQI
30AQI
32AQI
50AQI
25AQI
No. of days
202530AQI
Highest AQI recorded in
September50AQI
Lowest AQI recorded in
May19AQI
202427AQI
Highest AQI recorded in
July47AQI
Lowest AQI recorded in
April16AQI
202347AQI
Highest AQI recorded in
May91AQI
Lowest AQI recorded in
February14AQI
202227AQI
Highest AQI recorded in
October50AQI
Lowest AQI recorded in
February17AQI
202123AQI
Highest AQI recorded in
July39AQI
Lowest AQI recorded in
September16AQI
202019AQI
Highest AQI recorded in
November26AQI
Lowest AQI recorded in
June14AQI
Most & Least Polluted Years Over the Last 6 Years
Fort St John's annual 2025 AQI (30) shows an average percentage change of 13.4% (worsened AQI) compared to previous years: 2020 (19), 2021 (23), 2022 (27), 2023 (47), 2024 (27).