Thompson, Manitoba, Canada Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Thompson, Manitoba, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (17th September ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 48 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Thompson, Manitoba, Canada
6 AM17th Sep 2025
8 PM
5 AM18th Sep 2025
55AQI
42AQI
49AQI
25AQI
In the last 24 hours,
Thompson's AQI reached its highest point of 55 at 1 PM during the Day, while the lowest point, 25, was recorded at 5 AM during the Night between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Thompson, Manitoba, Canada
18°C12/25°C
22°C17/26°C
19°C15/21°C
13°C11/14°C
13°C10/17°C
14°C8/19°C
17°C11/21°C
18°C13/22°C
11°C10/12°C
18°C10/25°C
23°C16/28°C
22°C16/29°C
26°C19/31°C
16°C13/18°C
9°C6/11°C
8°C4/12°C
9°C5/13°C
9°C5/14°C
10°C7/13°C
12°C7/16°C
15°C11/20°C
11°C5/16°C
15°C6/21°C
18°C14/22°C
15°C10/20°C
17°C9/24°C
17°C12/22°C
19°C15/21°C
15°C11/16°C
12°C10/13°C
--°C/°C
48AQI
41AQI
47AQI
40AQI
2025 Days Vs Air Quality
Thompson, Manitoba, Canada
83%
217
15%
40
1%
3
Total number of days with different AQI categories in last 261 days in 2025 (104 days remaining)
Under WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% of 261 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
Thompson, Manitoba, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
30AQI
43AQI
51AQI
38AQI
36AQI
47AQI
44AQI
39AQI
41AQI
37AQI
45AQI
46AQI
31AQI
25AQI
20AQI
29AQI
41AQI
43AQI
41AQI
38AQI
29AQI
22AQI
21AQI
21AQI
20AQI
18AQI
18AQI
20AQI
24AQI
30AQI
22AQI
22AQI
23AQI
20AQI
22AQI
28AQI
39AQI
36AQI
26AQI
28AQI
26AQI
25AQI
24AQI
28AQI
28AQI
30AQI
36AQI
34AQI
28AQI
31AQI
31AQI
27AQI
29AQI
24AQI
27AQI
27AQI
20AQI
23AQI
27AQI
27AQI
26AQI
33AQI
25AQI
23AQI
21AQI
20AQI
18AQI
24AQI
26AQI
28AQI
33AQI
52AQI
70AQI
42AQI
30AQI
26AQI
38AQI
28AQI
32AQI
24AQI
29AQI
28AQI
25AQI
24AQI
19AQI
25AQI
27AQI
24AQI
25AQI
23AQI
22AQI
18AQI
20AQI
17AQI
17AQI
17AQI
18AQI
19AQI
22AQI
25AQI
25AQI
34AQI
20AQI
22AQI
18AQI
20AQI
19AQI
20AQI
15AQI
16AQI
17AQI
14AQI
18AQI
19AQI
17AQI
14AQI
15AQI
20AQI
22AQI
23AQI
25AQI
20AQI
23AQI
16AQI
21AQI
17AQI
17AQI
25AQI
27AQI
27AQI
25AQI
28AQI
27AQI
23AQI
22AQI
19AQI
16AQI
23AQI
23AQI
25AQI
23AQI
19AQI
23AQI
25AQI
25AQI
26AQI
23AQI
33AQI
40AQI
54AQI
74AQI
51AQI
59AQI
48AQI
52AQI
47AQI
53AQI
44AQI
58AQI
58AQI
49AQI
39AQI
24AQI
30AQI
42AQI
43AQI
33AQI
28AQI
22AQI
26AQI
28AQI
26AQI
23AQI
27AQI
36AQI
32AQI
32AQI
33AQI
30AQI
29AQI
23AQI
27AQI
25AQI
23AQI
25AQI
29AQI
35AQI
33AQI
30AQI
35AQI
41AQI
59AQI
74AQI
69AQI
62AQI
45AQI
50AQI
60AQI
59AQI
63AQI
73AQI
66AQI
50AQI
55AQI
53AQI
55AQI
43AQI
52AQI
57AQI
79AQI
126AQI
136AQI
129AQI
80AQI
65AQI
63AQI
45AQI
49AQI
55AQI
63AQI
51AQI
46AQI
47AQI
47AQI
33AQI
32AQI
24AQI
19AQI
19AQI
21AQI
22AQI
26AQI
24AQI
20AQI
22AQI
27AQI
38AQI
52AQI
50AQI
47AQI
50AQI
48AQI
61AQI
55AQI
66AQI
47AQI
48AQI
43AQI
52AQI
50AQI
36AQI
37AQI
54AQI
59AQI
55AQI
47AQI
47AQI
47AQI
48AQI
33AQI
27AQI
29AQI
19AQI
25AQI
39AQI
51AQI
47AQI
50AQI
No. of days
202535AQI
Highest AQI recorded in
July51AQI
Lowest AQI recorded in
April19AQI
202427AQI
Highest AQI recorded in
August43AQI
Lowest AQI recorded in
April4AQI
202317AQI
Highest AQI recorded in
December18AQI
Lowest AQI recorded in
November5AQI
202011AQI
Highest AQI recorded in
May17AQI
Lowest AQI recorded in
April8AQI
Most & Least Polluted Years Over the Last 4 Years
Thompson's annual 2025 AQI (35) shows an average percentage change of 115.9% (worsened AQI) compared to previous years: 2020 (11), 2023 (17), 2024 (27).