Trois Riviares Old Trois Riviares Area, Trois Rivieres, Quebec, 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
Trois Riviares Old Trois Riviares Area, Trois Rivieres, Quebec, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (21st October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 32 of Good air quality, showing improvement over 2024 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 21st Oct - 22nd Oct 2025
Trois Riviares Old Trois Riviares Area, Trois Rivieres, Quebec, Canada
6 AM21st Oct 2025
6 PM
5 AM22nd Oct 2025
33AQI
25AQI
44AQI
26AQI
In the last 24 hours,
Trois Riviares Old Trois Riviares Area's AQI reached its highest point of 44 at 7 PM during the Night, while the lowest point, 25, was recorded at 7 AM during the Day between 21st Oct and 22nd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Trois Riviares Old Trois Riviares Area, Trois Rivieres, Quebec, Canada
15°C7/22°C
18°C15/25°C
16°C12/22°C
15°C13/17°C
16°C11/21°C
13°C6/21°C
17°C11/27°C
17°C9/28°C
14°C9/19°C
11°C5/18°C
9°C2/19°C
12°C2/22°C
17°C11/26°C
19°C10/30°C
20°C13/29°C
19°C15/28°C
11°C4/13°C
7°C2/13°C
6°C0/16°C
9°C1/20°C
11°C7/20°C
11°C6/18°C
11°C7/16°C
8°C4/11°C
7°C2/15°C
7°C1/16°C
6°C0/12°C
13°C6/24°C
15°C11/18°C
11°C9/12°C
--°C/°C
34AQI
32AQI
42AQI
33AQI
2025 Days Vs Air Quality
Trois Riviares Old Trois Riviares Area, Trois Rivieres, Quebec, Canada
90%
266
10%
28
Total number of days with different AQI categories in last 295 days in 2025 (70 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2025, 90% of 295 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
Trois Riviares Old Trois Riviares Area, Trois Rivieres, Quebec, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI
25AQI
23AQI
21AQI
24AQI
27AQI
23AQI
20AQI
21AQI
22AQI
38AQI
37AQI
60AQI
43AQI
22AQI
34AQI
64AQI
44AQI
30AQI
27AQI
52AQI
73AQI
52AQI
44AQI
58AQI
58AQI
34AQI
28AQI
34AQI
26AQI
32AQI
23AQI
25AQI
32AQI
23AQI
22AQI
25AQI
27AQI
23AQI
30AQI
29AQI
44AQI
29AQI
23AQI
24AQI
24AQI
26AQI
20AQI
19AQI
20AQI
26AQI
23AQI
25AQI
43AQI
30AQI
55AQI
38AQI
40AQI
30AQI
24AQI
22AQI
38AQI
32AQI
50AQI
23AQI
23AQI
26AQI
25AQI
25AQI
40AQI
22AQI
40AQI
55AQI
40AQI
40AQI
18AQI
24AQI
21AQI
27AQI
19AQI
22AQI
17AQI
22AQI
29AQI
21AQI
18AQI
20AQI
18AQI
22AQI
23AQI
17AQI
18AQI
18AQI
21AQI
21AQI
21AQI
21AQI
19AQI
17AQI
23AQI
33AQI
32AQI
25AQI
30AQI
26AQI
14AQI
14AQI
22AQI
34AQI
19AQI
16AQI
19AQI
12AQI
15AQI
22AQI
16AQI
13AQI
22AQI
27AQI
16AQI
15AQI
26AQI
18AQI
21AQI
18AQI
22AQI
19AQI
15AQI
13AQI
17AQI
15AQI
25AQI
26AQI
30AQI
33AQI
39AQI
30AQI
21AQI
12AQI
12AQI
15AQI
15AQI
14AQI
11AQI
14AQI
23AQI
27AQI
29AQI
27AQI
24AQI
26AQI
12AQI
16AQI
27AQI
41AQI
40AQI
53AQI
57AQI
54AQI
55AQI
48AQI
49AQI
54AQI
31AQI
28AQI
30AQI
35AQI
40AQI
27AQI
36AQI
29AQI
29AQI
28AQI
27AQI
35AQI
33AQI
25AQI
24AQI
21AQI
20AQI
24AQI
30AQI
26AQI
29AQI
23AQI
23AQI
26AQI
33AQI
27AQI
30AQI
34AQI
31AQI
38AQI
38AQI
32AQI
34AQI
44AQI
48AQI
30AQI
29AQI
35AQI
31AQI
20AQI
20AQI
24AQI
35AQI
46AQI
55AQI
55AQI
50AQI
57AQI
47AQI
24AQI
32AQI
53AQI
58AQI
38AQI
28AQI
35AQI
44AQI
53AQI
58AQI
57AQI
57AQI
53AQI
36AQI
21AQI
31AQI
28AQI
15AQI
21AQI
20AQI
25AQI
32AQI
36AQI
30AQI
27AQI
16AQI
18AQI
24AQI
21AQI
20AQI
24AQI
36AQI
38AQI
33AQI
34AQI
26AQI
28AQI
24AQI
19AQI
22AQI
27AQI
29AQI
21AQI
28AQI
35AQI
26AQI
29AQI
30AQI
28AQI
19AQI
16AQI
21AQI
21AQI
24AQI
23AQI
18AQI
20AQI
22AQI
34AQI
39AQI
30AQI
31AQI
39AQI
49AQI
55AQI
59AQI
63AQI
50AQI
26AQI
28AQI
38AQI
50AQI
44AQI
35AQI
41AQI
34AQI
29AQI
35AQI
56AQI
44AQI
26AQI
32AQI
36AQI
29AQI
27AQI
21AQI
21AQI
34AQI
35AQI
33AQI
27AQI
41AQI
No. of days
202530AQI
Highest AQI recorded in
October41AQI
Lowest AQI recorded in
April21AQI
202429AQI
Highest AQI recorded in
December36AQI
Lowest AQI recorded in
November23AQI
202335AQI
Highest AQI recorded in
July53AQI
Lowest AQI recorded in
March25AQI
202231AQI
Highest AQI recorded in
January46AQI
Lowest AQI recorded in
August19AQI
202132AQI
Highest AQI recorded in
February45AQI
Lowest AQI recorded in
September19AQI
202030AQI
Highest AQI recorded in
November41AQI
Lowest AQI recorded in
September23AQI
Most & Least Polluted Years Over the Last 6 Years
Trois Riviares Old Trois Riviares Area's annual 2025 AQI (30) shows an average percentage change of -4.1% (improved AQI) compared to previous years: 2020 (30), 2021 (32), 2022 (31), 2023 (35), 2024 (29).