North Bay, Ontario, Canada Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
North Bay, Ontario, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (2nd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 58 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
North Bay, Ontario, Canada
5 AM2nd Aug 2025
9 PM
4 AM3rd Aug 2025
112AQI
61AQI
109AQI
55AQI
In the last 24 hours,
North Bay's AQI reached its highest point of 112 at 1 PM during the Day, while the lowest point, 55, was recorded at 5 AM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
North Bay, Ontario, Canada
19°C10/25°C
22°C16/29°C
20°C15/23°C
19°C13/24°C
19°C10/25°C
20°C15/24°C
20°C12/24°C
21°C16/26°C
24°C16/31°C
23°C20/27°C
22°C16/28°C
23°C18/28°C
24°C18/30°C
15°C14/17°C
18°C10/25°C
19°C15/23°C
19°C15/23°C
15°C9/20°C
17°C8/25°C
20°C15/25°C
22°C20/25°C
22°C18/26°C
23°C17/28°C
23°C17/28°C
23°C19/30°C
19°C16/22°C
21°C17/26°C
17°C12/21°C
17°C9/23°C
20°C14/27°C
--°C/°C
44AQI
44AQI
43AQI
43AQI
2025 Days Vs Air Quality
North Bay, Ontario, Canada
91%
195
9%
19
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% of 215 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
North Bay, Ontario, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI
21AQI
23AQI
24AQI
24AQI
23AQI
23AQI
23AQI
29AQI
36AQI
37AQI
29AQI
29AQI
21AQI
21AQI
39AQI
28AQI
33AQI
24AQI
30AQI
38AQI
33AQI
31AQI
27AQI
40AQI
30AQI
27AQI
26AQI
26AQI
26AQI
31AQI
27AQI
26AQI
30AQI
24AQI
24AQI
24AQI
26AQI
27AQI
24AQI
24AQI
27AQI
30AQI
23AQI
23AQI
26AQI
25AQI
24AQI
21AQI
20AQI
21AQI
27AQI
33AQI
34AQI
46AQI
28AQI
25AQI
27AQI
27AQI
26AQI
24AQI
27AQI
46AQI
27AQI
22AQI
28AQI
28AQI
27AQI
25AQI
28AQI
23AQI
25AQI
33AQI
47AQI
34AQI
16AQI
21AQI
21AQI
20AQI
18AQI
22AQI
20AQI
17AQI
18AQI
20AQI
27AQI
19AQI
17AQI
17AQI
17AQI
16AQI
20AQI
18AQI
18AQI
19AQI
16AQI
18AQI
16AQI
22AQI
26AQI
27AQI
30AQI
29AQI
31AQI
17AQI
14AQI
20AQI
32AQI
30AQI
15AQI
18AQI
13AQI
15AQI
26AQI
20AQI
13AQI
14AQI
24AQI
27AQI
13AQI
21AQI
17AQI
14AQI
25AQI
16AQI
16AQI
19AQI
16AQI
19AQI
20AQI
16AQI
23AQI
29AQI
24AQI
22AQI
26AQI
29AQI
15AQI
13AQI
13AQI
13AQI
12AQI
11AQI
13AQI
17AQI
20AQI
22AQI
25AQI
21AQI
22AQI
18AQI
12AQI
20AQI
36AQI
52AQI
54AQI
59AQI
66AQI
62AQI
59AQI
54AQI
57AQI
52AQI
28AQI
24AQI
27AQI
35AQI
39AQI
34AQI
32AQI
22AQI
38AQI
39AQI
44AQI
48AQI
37AQI
30AQI
25AQI
23AQI
24AQI
32AQI
29AQI
32AQI
34AQI
32AQI
33AQI
43AQI
32AQI
28AQI
33AQI
35AQI
41AQI
43AQI
40AQI
52AQI
64AQI
66AQI
36AQI
30AQI
40AQI
33AQI
27AQI
22AQI
25AQI
33AQI
36AQI
53AQI
57AQI
56AQI
51AQI
56AQI
58AQI
46AQI
58AQI
28AQI
27AQI
25AQI
21AQI
19AQI
39AQI
40AQI
52AQI
No. of days
202528AQI
Highest AQI recorded in
August52AQI
Lowest AQI recorded in
May19AQI
202428AQI
Highest AQI recorded in
August35AQI
Lowest AQI recorded in
November18AQI
202341AQI
Highest AQI recorded in
June100AQI
Lowest AQI recorded in
January28AQI
202234AQI
Highest AQI recorded in
July39AQI
Lowest AQI recorded in
December29AQI
202134AQI
Highest AQI recorded in
July46AQI
Lowest AQI recorded in
September28AQI
202030AQI
Highest AQI recorded in
May35AQI
Lowest AQI recorded in
October24AQI
Most & Least Polluted Years Over the Last 6 Years
North Bay's annual 2025 AQI (28) shows an average percentage change of -13.5% (improved AQI) compared to previous years: 2020 (30), 2021 (34), 2022 (34), 2023 (41), 2024 (28).