Estrie, Sherbrooke, 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
Estrie, Sherbrooke, Quebec, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (1st October):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 35 of Good air quality, showing improvement over 2023 on the same day.
Day & Night AQI Trend: 30th Sep - 1st Oct 2026
Estrie, Sherbrooke, Quebec, Canada
6 AM30th Sep 2026
6 PM
5 AM1st Oct 2026
46AQI
25AQI
29AQI
25AQI
In the last 24 hours,
Estrie's AQI reached its highest point of 46 at 2 PM during the Day, while the lowest point, 25, was recorded at 2 AM during the Night between 30th Sep and 1st Oct 2026.
Day & Night AQI Trend : Sep - Oct 2026
Estrie, Sherbrooke, Quebec, Canada
19°C13/24°C
19°C16/25°C
18°C13/24°C
17°C12/21°C
15°C11/23°C
17°C7/27°C
17°C12/22°C
14°C7/20°C
19°C12/25°C
13°C8/20°C
15°C5/24°C
17°C14/21°C
12°C8/17°C
12°C5/19°C
17°C14/22°C
16°C12/22°C
13°C7/17°C
8°C3/14°C
8°C6/11°C
9°C6/13°C
9°C3/16°C
10°C5/17°C
11°C4/19°C
14°C8/22°C
15°C10/21°C
14°C12/17°C
12°C10/15°C
11°C9/14°C
13°C9/19°C
18°C11/26°C
34AQI
26AQI
34AQI
26AQI
2026 Days Vs Air Quality
Estrie, Sherbrooke, Quebec, Canada
95%
258
5%
13
Total number of days with different AQI categories in last 274 days in 2026 (91 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2026, 95% of 274 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
Estrie, Sherbrooke, Quebec, Canada
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
22AQI (US)
35AQI (US)
22AQI (US)
47AQI (US)
43AQI (US)
51AQI (US)
45AQI (US)
33AQI (US)
23AQI (US)
20AQI (US)
16AQI (US)
17AQI (US)
23AQI (US)
29AQI (US)
33AQI (US)
18AQI (US)
35AQI (US)
34AQI (US)
44AQI (US)
19AQI (US)
21AQI (US)
57AQI (US)
60AQI (US)
48AQI (US)
50AQI (US)
47AQI (US)
38AQI (US)
43AQI (US)
48AQI (US)
55AQI (US)
42AQI (US)
48AQI (US)
53AQI (US)
48AQI (US)
46AQI (US)
51AQI (US)
39AQI (US)
38AQI (US)
42AQI (US)
46AQI (US)
45AQI (US)
40AQI (US)
39AQI (US)
46AQI (US)
43AQI (US)
37AQI (US)
43AQI (US)
33AQI (US)
39AQI (US)
41AQI (US)
38AQI (US)
35AQI (US)
36AQI (US)
38AQI (US)
45AQI (US)
44AQI (US)
35AQI (US)
38AQI (US)
38AQI (US)
39AQI (US)
58AQI (US)
44AQI (US)
47AQI (US)
40AQI (US)
31AQI (US)
42AQI (US)
38AQI (US)
38AQI (US)
34AQI (US)
47AQI (US)
40AQI (US)
43AQI (US)
36AQI (US)
33AQI (US)
36AQI (US)
32AQI (US)
31AQI (US)
35AQI (US)
41AQI (US)
40AQI (US)
35AQI (US)
40AQI (US)
36AQI (US)
32AQI (US)
27AQI (US)
29AQI (US)
31AQI (US)
26AQI (US)
26AQI (US)
24AQI (US)
28AQI (US)
30AQI (US)
28AQI (US)
32AQI (US)
30AQI (US)
29AQI (US)
26AQI (US)
31AQI (US)
27AQI (US)
31AQI (US)
30AQI (US)
24AQI (US)
29AQI (US)
32AQI (US)
33AQI (US)
30AQI (US)
29AQI (US)
33AQI (US)
28AQI (US)
27AQI (US)
23AQI (US)
25AQI (US)
28AQI (US)
32AQI (US)
27AQI (US)
24AQI (US)
23AQI (US)
26AQI (US)
25AQI (US)
24AQI (US)
21AQI (US)
34AQI (US)
37AQI (US)
29AQI (US)
25AQI (US)
27AQI (US)
31AQI (US)
27AQI (US)
25AQI (US)
27AQI (US)
22AQI (US)
46AQI (US)
53AQI (US)
56AQI (US)
57AQI (US)
55AQI (US)
51AQI (US)
44AQI (US)
44AQI (US)
51AQI (US)
48AQI (US)
46AQI (US)
29AQI (US)
27AQI (US)
21AQI (US)
21AQI (US)
21AQI (US)
27AQI (US)
27AQI (US)
26AQI (US)
25AQI (US)
24AQI (US)
27AQI (US)
25AQI (US)
21AQI (US)
24AQI (US)
24AQI (US)
27AQI (US)
27AQI (US)
27AQI (US)
25AQI (US)
23AQI (US)
25AQI (US)
27AQI (US)
26AQI (US)
26AQI (US)
22AQI (US)
22AQI (US)
19AQI (US)
21AQI (US)
21AQI (US)
23AQI (US)
25AQI (US)
27AQI (US)
28AQI (US)
28AQI (US)
25AQI (US)
27AQI (US)
27AQI (US)
27AQI (US)
29AQI (US)
28AQI (US)
30AQI (US)
31AQI (US)
32AQI (US)
28AQI (US)
29AQI (US)
32AQI (US)
29AQI (US)
32AQI (US)
37AQI (US)
34AQI (US)
42AQI (US)
36AQI (US)
30AQI (US)
48AQI (US)
38AQI (US)
40AQI (US)
38AQI (US)
32AQI (US)
29AQI (US)
30AQI (US)
34AQI (US)
35AQI (US)
35AQI (US)
36AQI (US)
34AQI (US)
35AQI (US)
39AQI (US)
34AQI (US)
38AQI (US)
34AQI (US)
38AQI (US)
39AQI (US)
42AQI (US)
30AQI (US)
28AQI (US)
29AQI (US)
28AQI (US)
32AQI (US)
27AQI (US)
29AQI (US)
28AQI (US)
40AQI (US)
36AQI (US)
28AQI (US)
24AQI (US)
29AQI (US)
27AQI (US)
26AQI (US)
30AQI (US)
24AQI (US)
36AQI (US)
30AQI (US)
25AQI (US)
27AQI (US)
29AQI (US)
23AQI (US)
26AQI (US)
27AQI (US)
27AQI (US)
29AQI (US)
26AQI (US)
27AQI (US)
26AQI (US)
26AQI (US)
36AQI (US)
29AQI (US)
26AQI (US)
38AQI (US)
38AQI (US)
29AQI (US)
27AQI (US)
35AQI (US)
26AQI (US)
26AQI (US)
27AQI (US)
32AQI (US)
27AQI (US)
32AQI (US)
26AQI (US)
27AQI (US)
30AQI (US)
30AQI (US)
36AQI (US)
29AQI (US)
28AQI (US)
24AQI (US)
35AQI (US)
28AQI (US)
35AQI (US)
36AQI (US)
42AQI (US)
36AQI (US)
28AQI (US)
35AQI (US)
25AQI (US)
33AQI (US)
30AQI (US)
29AQI (US)
35AQI (US)
No. of days
202633AQI (US)
Highest AQI (US) recorded in
February42AQI (US)
Lowest AQI (US) recorded in
June25AQI (US)
202530AQI (US)
Highest AQI (US) recorded in
July40AQI (US)
Lowest AQI (US) recorded in
April18AQI (US)
202426AQI (US)
Highest AQI (US) recorded in
August36AQI (US)
Lowest AQI (US) recorded in
November22AQI (US)
202330AQI (US)
Highest AQI (US) recorded in
July45AQI (US)
Lowest AQI (US) recorded in
January22AQI (US)
202224AQI (US)
Highest AQI (US) recorded in
July32AQI (US)
Lowest AQI (US) recorded in
September19AQI (US)
202127AQI (US)
Highest AQI (US) recorded in
August40AQI (US)
Lowest AQI (US) recorded in
September21AQI (US)
202024AQI (US)
Highest AQI (US) recorded in
March26AQI (US)
Lowest AQI (US) recorded in
October20AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Estrie's annual 2026 AQI (US) (33) shows an average percentage change of 24.02% (worsened AQI (US)) compared to previous years: 2020 (24), 2021 (27), 2022 (24), 2023 (30), 2024 (26), 2025 (30).