Houston Firehall, Smithers, 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
Houston Firehall, Smithers, British Columbia, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (10th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 54 of Moderate air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 10th Oct - 11th Oct 2025
Houston Firehall, Smithers, British Columbia, Canada
7 AM10th Oct 2025
7 PM
6 AM11th Oct 2025
66AQI
37AQI
51AQI
11AQI
In the last 24 hours,
Houston Firehall's AQI reached its highest point of 66 at 11 AM during the Day, while the lowest point, 11, was recorded at 6 AM during the Night between 10th Oct and 11th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Houston Firehall, Smithers, British Columbia, Canada
16°C11/20°C
17°C13/20°C
13°C9/15°C
13°C11/16°C
12°C5/19°C
16°C10/23°C
13°C6/16°C
10°C5/17°C
12°C7/15°C
12°C9/15°C
10°C8/13°C
10°C7/11°C
8°C4/13°C
8°C5/13°C
8°C4/12°C
6°C3/8°C
7°C2/11°C
5°C2/7°C
7°C5/12°C
6°C2/12°C
9°C4/14°C
8°C5/11°C
9°C7/12°C
8°C6/11°C
9°C5/13°C
11°C9/15°C
7°C3/9°C
5°C1/11°C
6°C0/14°C
9°C3/15°C
--°C/°C
31AQI
21AQI
36AQI
21AQI
2025 Days Vs Air Quality
Houston Firehall, Smithers, British Columbia, Canada
92%
259
8%
23
0.3%
1
Total number of days with different AQI categories in last 284 days in 2025 (81 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2025, 92% of 284 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
Houston Firehall, Smithers, British Columbia, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
41AQI
40AQI
34AQI
27AQI
34AQI
50AQI
30AQI
56AQI
31AQI
23AQI
28AQI
64AQI
38AQI
29AQI
35AQI
25AQI
42AQI
39AQI
41AQI
31AQI
45AQI
33AQI
40AQI
37AQI
26AQI
29AQI
30AQI
51AQI
38AQI
27AQI
26AQI
17AQI
44AQI
66AQI
63AQI
63AQI
34AQI
38AQI
49AQI
47AQI
43AQI
54AQI
55AQI
58AQI
31AQI
21AQI
27AQI
43AQI
50AQI
23AQI
45AQI
27AQI
26AQI
21AQI
31AQI
45AQI
22AQI
22AQI
35AQI
35AQI
37AQI
51AQI
58AQI
52AQI
52AQI
27AQI
30AQI
25AQI
24AQI
27AQI
27AQI
23AQI
23AQI
20AQI
21AQI
27AQI
30AQI
26AQI
24AQI
24AQI
26AQI
22AQI
20AQI
34AQI
47AQI
26AQI
16AQI
20AQI
30AQI
47AQI
52AQI
50AQI
43AQI
41AQI
33AQI
32AQI
19AQI
15AQI
24AQI
23AQI
18AQI
23AQI
25AQI
16AQI
24AQI
22AQI
30AQI
40AQI
18AQI
19AQI
13AQI
20AQI
15AQI
28AQI
29AQI
22AQI
26AQI
17AQI
14AQI
22AQI
26AQI
26AQI
14AQI
15AQI
16AQI
15AQI
18AQI
20AQI
15AQI
18AQI
19AQI
17AQI
21AQI
18AQI
20AQI
18AQI
18AQI
15AQI
17AQI
13AQI
14AQI
19AQI
17AQI
14AQI
17AQI
15AQI
14AQI
15AQI
19AQI
18AQI
13AQI
13AQI
14AQI
22AQI
24AQI
25AQI
15AQI
26AQI
26AQI
22AQI
33AQI
49AQI
54AQI
30AQI
22AQI
18AQI
19AQI
18AQI
19AQI
17AQI
16AQI
14AQI
14AQI
21AQI
46AQI
20AQI
17AQI
15AQI
14AQI
16AQI
15AQI
16AQI
15AQI
14AQI
16AQI
18AQI
16AQI
17AQI
18AQI
16AQI
21AQI
20AQI
18AQI
16AQI
21AQI
39AQI
33AQI
35AQI
35AQI
31AQI
31AQI
51AQI
30AQI
35AQI
27AQI
20AQI
20AQI
28AQI
33AQI
33AQI
43AQI
26AQI
21AQI
27AQI
22AQI
26AQI
25AQI
20AQI
17AQI
21AQI
23AQI
20AQI
19AQI
17AQI
18AQI
18AQI
16AQI
14AQI
13AQI
15AQI
16AQI
15AQI
14AQI
24AQI
32AQI
33AQI
39AQI
45AQI
50AQI
49AQI
42AQI
43AQI
45AQI
54AQI
75AQI
94AQI
79AQI
93AQI
109AQI
72AQI
48AQI
42AQI
39AQI
42AQI
28AQI
32AQI
29AQI
26AQI
28AQI
46AQI
27AQI
29AQI
31AQI
27AQI
18AQI
18AQI
24AQI
25AQI
18AQI
16AQI
19AQI
11AQI
19AQI
18AQI
26AQI
20AQI
38AQI
40AQI
50AQI
20AQI
45AQI
47AQI
54AQI
36AQI
39AQI
31AQI
26AQI
17AQI
22AQI
26AQI
26AQI
41AQI
36AQI
No. of days
202529AQI
Highest AQI recorded in
September41AQI
Lowest AQI recorded in
May17AQI
202429AQI
Highest AQI recorded in
February50AQI
Lowest AQI recorded in
September16AQI
202338AQI
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
June25AQI
202235AQI
Highest AQI recorded in
December49AQI
Lowest AQI recorded in
May19AQI
202129AQI
Highest AQI recorded in
December48AQI
Lowest AQI recorded in
May15AQI
202025AQI
Highest AQI recorded in
November40AQI
Lowest AQI recorded in
June10AQI
Most & Least Polluted Years Over the Last 6 Years
Houston Firehall's annual 2025 AQI (29) shows an average percentage change of -3.5% (improved AQI) compared to previous years: 2020 (25), 2021 (29), 2022 (35), 2023 (38), 2024 (29).