Sainte Cecile de Masham, 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
Sainte Cecile de Masham, Quebec, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (6th October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 60 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
Sainte Cecile de Masham, Quebec, Canada
6 AM6th Oct 2025
7 PM
5 AM7th Oct 2025
63AQI
56AQI
57AQI
57AQI
In the last 24 hours,
Sainte Cecile de Masham's AQI reached its highest point of 63 at 11 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
Sainte Cecile de Masham, Quebec, Canada
15°C11/21°C
13°C6/21°C
15°C5/24°C
15°C4/24°C
17°C11/24°C
14°C5/20°C
18°C11/26°C
18°C12/22°C
16°C8/23°C
17°C8/26°C
18°C10/25°C
18°C10/26°C
12°C8/19°C
10°C3/17°C
13°C3/24°C
17°C15/20°C
19°C17/23°C
19°C14/26°C
16°C15/18°C
17°C13/21°C
16°C9/24°C
20°C15/27°C
20°C11/29°C
16°C11/23°C
12°C4/20°C
11°C3/21°C
15°C6/26°C
21°C13/29°C
23°C17/33°C
23°C17/31°C
--°C/°C
30AQI
27AQI
30AQI
28AQI
2025 Days Vs Air Quality
Sainte Cecile de Masham, Quebec, Canada
87%
169
13%
25
Total number of days with different AQI categories in last 280 days in 2025 (85 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2025, 87% of 280 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
Sainte Cecile de Masham, Quebec, Canada
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI
18AQI
17AQI
18AQI
19AQI
15AQI
18AQI
18AQI
18AQI
18AQI
18AQI
18AQI
17AQI
16AQI
20AQI
24AQI
24AQI
22AQI
24AQI
19AQI
14AQI
15AQI
23AQI
38AQI
14AQI
15AQI
16AQI
13AQI
19AQI
19AQI
15AQI
12AQI
16AQI
24AQI
14AQI
18AQI
21AQI
13AQI
16AQI
16AQI
19AQI
19AQI
14AQI
16AQI
17AQI
14AQI
19AQI
26AQI
26AQI
23AQI
26AQI
31AQI
14AQI
11AQI
12AQI
17AQI
13AQI
13AQI
11AQI
16AQI
18AQI
21AQI
23AQI
19AQI
20AQI
23AQI
12AQI
15AQI
27AQI
49AQI
53AQI
54AQI
65AQI
62AQI
59AQI
46AQI
54AQI
55AQI
26AQI
22AQI
26AQI
33AQI
33AQI
29AQI
32AQI
20AQI
26AQI
28AQI
40AQI
47AQI
39AQI
27AQI
23AQI
25AQI
22AQI
31AQI
32AQI
31AQI
43AQI
27AQI
29AQI
47AQI
35AQI
29AQI
29AQI
33AQI
40AQI
46AQI
41AQI
48AQI
59AQI
62AQI
50AQI
24AQI
37AQI
34AQI
29AQI
19AQI
19AQI
29AQI
34AQI
51AQI
59AQI
58AQI
50AQI
58AQI
52AQI
22AQI
42AQI
89AQI
85AQI
36AQI
30AQI
52AQI
68AQI
63AQI
60AQI
57AQI
53AQI
48AQI
42AQI
26AQI
44AQI
37AQI
14AQI
17AQI
18AQI
19AQI
22AQI
26AQI
24AQI
16AQI
14AQI
17AQI
19AQI
17AQI
16AQI
19AQI
25AQI
28AQI
26AQI
24AQI
26AQI
22AQI
17AQI
17AQI
18AQI
21AQI
24AQI
21AQI
26AQI
34AQI
25AQI
27AQI
28AQI
29AQI
17AQI
16AQI
18AQI
23AQI
25AQI
27AQI
21AQI
20AQI
21AQI
32AQI
40AQI
35AQI
30AQI
42AQI
48AQI
52AQI
60AQI
60AQI
18AQI
19AQI
18AQI
36AQI
40AQI
36AQI
24AQI
49AQI
No. of days
202529AQI
Highest AQI recorded in
October49AQI
Lowest AQI recorded in
March18AQI
Most & Least Polluted Years Over the Last 1 Years
Sainte Cecile de Masham's annual 2025 AQI (29) shows an average percentage change of NaN% (improved AQI) compared to previous years: .