Gatineau Hull Area, Ottawa, Ontario, 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
Gatineau Hull Area, Ottawa, Ontario, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (6th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 59 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 6th Oct - 7th Oct 2025
Gatineau Hull Area, Ottawa, Ontario, Canada
6 AM6th Oct 2025
7 PM
5 AM7th Oct 2025
62AQI
57AQI
58AQI
58AQI
In the last 24 hours,
Gatineau Hull Area's AQI reached its highest point of 62 at 10 AM during the Day, while the lowest point, undefined, was recorded at 5 AM during the Night between 6th Oct and 7th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Gatineau Hull Area, Ottawa, Ontario, Canada
--°C/°C
15°C7/21°C
15°C5/25°C
18°C7/27°C
18°C11/23°C
16°C8/24°C
19°C12/27°C
18°C13/23°C
19°C10/26°C
19°C10/28°C
19°C11/27°C
19°C12/27°C
13°C9/19°C
12°C5/19°C
12°C2/24°C
16°C13/21°C
19°C17/25°C
18°C14/25°C
17°C15/19°C
17°C14/21°C
16°C11/23°C
19°C14/26°C
18°C10/30°C
16°C11/22°C
12°C6/20°C
11°C3/21°C
13°C4/25°C
19°C12/30°C
21°C13/33°C
20°C12/29°C
18°C15/21°C
32AQI
29AQI
32AQI
29AQI
2025 Days Vs Air Quality
Gatineau Hull Area, Ottawa, Ontario, Canada
90%
251
10%
28
Total number of days with different AQI categories in last 281 days in 2025 (84 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2025, 90% of 281 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
Gatineau Hull Area, Ottawa, Ontario, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
22AQI
19AQI
20AQI
22AQI
22AQI
27AQI
20AQI
20AQI
22AQI
26AQI
38AQI
30AQI
53AQI
26AQI
22AQI
38AQI
49AQI
30AQI
21AQI
24AQI
43AQI
43AQI
36AQI
36AQI
53AQI
35AQI
30AQI
25AQI
23AQI
23AQI
42AQI
23AQI
36AQI
55AQI
24AQI
22AQI
36AQI
29AQI
23AQI
23AQI
21AQI
27AQI
28AQI
22AQI
19AQI
20AQI
19AQI
19AQI
19AQI
20AQI
24AQI
31AQI
42AQI
51AQI
51AQI
56AQI
31AQI
38AQI
25AQI
23AQI
22AQI
43AQI
39AQI
47AQI
25AQI
25AQI
27AQI
26AQI
23AQI
35AQI
23AQI
38AQI
60AQI
57AQI
46AQI
16AQI
22AQI
27AQI
32AQI
16AQI
20AQI
17AQI
22AQI
20AQI
20AQI
18AQI
19AQI
18AQI
20AQI
24AQI
17AQI
20AQI
20AQI
19AQI
20AQI
20AQI
20AQI
18AQI
16AQI
29AQI
27AQI
25AQI
27AQI
29AQI
20AQI
15AQI
15AQI
32AQI
37AQI
15AQI
16AQI
16AQI
13AQI
23AQI
21AQI
15AQI
12AQI
16AQI
26AQI
13AQI
21AQI
20AQI
13AQI
15AQI
16AQI
16AQI
17AQI
14AQI
16AQI
17AQI
14AQI
18AQI
26AQI
28AQI
22AQI
27AQI
28AQI
13AQI
12AQI
12AQI
18AQI
15AQI
14AQI
12AQI
15AQI
20AQI
24AQI
26AQI
20AQI
20AQI
22AQI
13AQI
15AQI
25AQI
43AQI
43AQI
53AQI
59AQI
58AQI
56AQI
36AQI
49AQI
51AQI
24AQI
23AQI
25AQI
32AQI
27AQI
24AQI
29AQI
19AQI
23AQI
23AQI
35AQI
47AQI
36AQI
24AQI
22AQI
24AQI
19AQI
27AQI
31AQI
29AQI
38AQI
24AQI
26AQI
45AQI
42AQI
26AQI
26AQI
29AQI
35AQI
45AQI
40AQI
45AQI
47AQI
55AQI
55AQI
25AQI
30AQI
28AQI
30AQI
19AQI
21AQI
25AQI
31AQI
50AQI
56AQI
58AQI
46AQI
62AQI
48AQI
22AQI
37AQI
58AQI
74AQI
36AQI
30AQI
37AQI
54AQI
60AQI
62AQI
55AQI
53AQI
46AQI
41AQI
22AQI
37AQI
24AQI
16AQI
20AQI
21AQI
21AQI
28AQI
28AQI
27AQI
20AQI
14AQI
19AQI
24AQI
17AQI
17AQI
23AQI
30AQI
33AQI
31AQI
27AQI
31AQI
23AQI
19AQI
19AQI
26AQI
28AQI
32AQI
23AQI
33AQI
36AQI
25AQI
32AQI
32AQI
29AQI
17AQI
16AQI
18AQI
21AQI
28AQI
27AQI
20AQI
21AQI
22AQI
33AQI
42AQI
35AQI
30AQI
39AQI
46AQI
51AQI
60AQI
59AQI
30AQI
30AQI
28AQI
20AQI
18AQI
33AQI
38AQI
34AQI
27AQI
48AQI
No. of days
202529AQI
Highest AQI recorded in
October48AQI
Lowest AQI recorded in
May18AQI
202428AQI
Highest AQI recorded in
August34AQI
Lowest AQI recorded in
November23AQI
202336AQI
Highest AQI recorded in
June66AQI
Lowest AQI recorded in
November27AQI
202230AQI
Highest AQI recorded in
January42AQI
Lowest AQI recorded in
August21AQI
202132AQI
Highest AQI recorded in
August41AQI
Lowest AQI recorded in
September20AQI
202026AQI
Highest AQI recorded in
November37AQI
Lowest AQI recorded in
September21AQI
Most & Least Polluted Years Over the Last 6 Years
Gatineau Hull Area's annual 2025 AQI (29) shows an average percentage change of -3.1% (improved AQI) compared to previous years: 2020 (26), 2021 (32), 2022 (30), 2023 (36), 2024 (28).