James Street South, Thunder 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
James Street South, Thunder Bay, Ontario, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (1st August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 157 of Unhealthy air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
James Street South, Thunder Bay, Ontario, Canada
6 AM2nd Aug 2025
9 PM
5 AM3rd Aug 2025
157AQI
106AQI
131AQI
103AQI
In the last 24 hours,
James Street South's AQI reached its highest point of 157 at 7 AM during the Day, while the lowest point, undefined, was recorded at 5 AM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
James Street South, Thunder Bay, Ontario, Canada
14°C10/21°C
18°C10/25°C
18°C13/23°C
15°C9/20°C
13°C10/17°C
15°C9/21°C
14°C8/20°C
16°C11/22°C
16°C11/22°C
22°C16/28°C
23°C18/30°C
16°C13/21°C
12°C10/14°C
17°C8/23°C
15°C10/20°C
16°C10/22°C
18°C13/23°C
16°C11/21°C
15°C12/22°C
17°C14/22°C
21°C16/28°C
19°C12/25°C
20°C12/27°C
20°C15/24°C
21°C14/28°C
21°C17/27°C
17°C11/22°C
16°C8/22°C
21°C12/29°C
22°C15/28°C
--°C/°C
59AQI
59AQI
58AQI
56AQI
2025 Days Vs Air Quality
James Street South, Thunder Bay, Ontario, Canada
83%
106
16%
20
0.7%
1
0.7%
1
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Under WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% of 215 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
James Street South, Thunder Bay, Ontario, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI
19AQI
16AQI
17AQI
17AQI
21AQI
18AQI
17AQI
22AQI
17AQI
18AQI
15AQI
16AQI
20AQI
29AQI
34AQI
36AQI
47AQI
29AQI
14AQI
16AQI
18AQI
23AQI
16AQI
20AQI
14AQI
18AQI
15AQI
15AQI
17AQI
17AQI
22AQI
25AQI
16AQI
15AQI
18AQI
17AQI
15AQI
16AQI
20AQI
26AQI
18AQI
17AQI
26AQI
20AQI
17AQI
26AQI
36AQI
33AQI
25AQI
24AQI
16AQI
17AQI
14AQI
14AQI
17AQI
14AQI
12AQI
15AQI
18AQI
19AQI
22AQI
23AQI
31AQI
29AQI
31AQI
29AQI
30AQI
49AQI
45AQI
55AQI
47AQI
59AQI
54AQI
59AQI
55AQI
61AQI
47AQI
31AQI
25AQI
28AQI
32AQI
31AQI
41AQI
36AQI
30AQI
33AQI
33AQI
33AQI
31AQI
38AQI
36AQI
27AQI
28AQI
26AQI
24AQI
31AQI
38AQI
37AQI
36AQI
43AQI
41AQI
29AQI
29AQI
30AQI
31AQI
33AQI
36AQI
53AQI
79AQI
84AQI
52AQI
39AQI
52AQI
43AQI
53AQI
54AQI
51AQI
52AQI
54AQI
53AQI
59AQI
43AQI
41AQI
56AQI
70AQI
124AQI
157AQI
17AQI
21AQI
21AQI
38AQI
49AQI
157AQI
No. of days
202533AQI
Highest AQI recorded in
August157AQI
Lowest AQI recorded in
March17AQI
Most & Least Polluted Years Over the Last 1 Years
James Street South's annual 2025 AQI (33) shows an average percentage change of NaN% (improved AQI) compared to previous years: .