Brossard, Quebec, 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
Brossard, Quebec, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (24th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 28 of Good air quality, showing improvement over 2025 and 2023 on the same day.
Day & Night AQI Trend: 24th Sep - 25th Sep 2026
Brossard, Quebec, Canada
6 AM24th Sep 2026
7 PM
5 AM25th Sep 2026
42AQI
16AQI
51AQI
20AQI
In the last 24 hours,
Brossard's AQI reached its highest point of 51 at 11 PM during the Night, while the lowest point, 16, was recorded at 5 PM during the Day between 24th Sep and 25th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Brossard, Quebec, Canada
21°C17/28°C
20°C17/23°C
19°C13/27°C
21°C17/24°C
19°C12/27°C
21°C14/29°C
21°C16/26°C
22°C18/28°C
21°C17/25°C
18°C16/23°C
18°C12/24°C
21°C14/28°C
19°C16/24°C
18°C14/23°C
20°C15/23°C
16°C11/22°C
17°C11/24°C
19°C17/22°C
15°C12/19°C
14°C9/18°C
19°C16/25°C
18°C13/24°C
16°C10/20°C
12°C7/17°C
13°C9/20°C
13°C10/16°C
12°C7/18°C
13°C7/19°C
14°C8/21°C
16°C10/23°C
30AQI
24AQI
34AQI
26AQI
2026 Days Vs Air Quality
Brossard, Quebec, Canada
95%
251
5%
13
Total number of days with different AQI categories in last 268 days in 2026 (97 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2026, 95% of 268 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
Brossard, Quebec, Canada
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI (US)
44AQI (US)
23AQI (US)
52AQI (US)
46AQI (US)
62AQI (US)
60AQI (US)
68AQI (US)
42AQI (US)
17AQI (US)
18AQI (US)
18AQI (US)
43AQI (US)
36AQI (US)
34AQI (US)
18AQI (US)
40AQI (US)
34AQI (US)
42AQI (US)
23AQI (US)
25AQI (US)
49AQI (US)
53AQI (US)
48AQI (US)
46AQI (US)
48AQI (US)
44AQI (US)
46AQI (US)
50AQI (US)
49AQI (US)
44AQI (US)
47AQI (US)
48AQI (US)
50AQI (US)
53AQI (US)
49AQI (US)
40AQI (US)
39AQI (US)
44AQI (US)
45AQI (US)
46AQI (US)
47AQI (US)
46AQI (US)
54AQI (US)
48AQI (US)
42AQI (US)
42AQI (US)
43AQI (US)
40AQI (US)
40AQI (US)
43AQI (US)
38AQI (US)
36AQI (US)
40AQI (US)
44AQI (US)
42AQI (US)
35AQI (US)
34AQI (US)
38AQI (US)
42AQI (US)
52AQI (US)
46AQI (US)
44AQI (US)
42AQI (US)
38AQI (US)
38AQI (US)
38AQI (US)
40AQI (US)
34AQI (US)
42AQI (US)
42AQI (US)
40AQI (US)
36AQI (US)
36AQI (US)
36AQI (US)
35AQI (US)
32AQI (US)
32AQI (US)
36AQI (US)
36AQI (US)
34AQI (US)
40AQI (US)
36AQI (US)
34AQI (US)
30AQI (US)
32AQI (US)
34AQI (US)
31AQI (US)
28AQI (US)
25AQI (US)
32AQI (US)
35AQI (US)
28AQI (US)
31AQI (US)
29AQI (US)
28AQI (US)
27AQI (US)
31AQI (US)
28AQI (US)
31AQI (US)
34AQI (US)
30AQI (US)
32AQI (US)
34AQI (US)
32AQI (US)
30AQI (US)
34AQI (US)
34AQI (US)
30AQI (US)
28AQI (US)
26AQI (US)
29AQI (US)
32AQI (US)
33AQI (US)
29AQI (US)
25AQI (US)
22AQI (US)
26AQI (US)
27AQI (US)
25AQI (US)
21AQI (US)
28AQI (US)
32AQI (US)
31AQI (US)
28AQI (US)
28AQI (US)
33AQI (US)
32AQI (US)
30AQI (US)
30AQI (US)
25AQI (US)
46AQI (US)
52AQI (US)
56AQI (US)
57AQI (US)
54AQI (US)
48AQI (US)
44AQI (US)
44AQI (US)
50AQI (US)
47AQI (US)
45AQI (US)
28AQI (US)
26AQI (US)
20AQI (US)
18AQI (US)
20AQI (US)
25AQI (US)
25AQI (US)
26AQI (US)
24AQI (US)
24AQI (US)
27AQI (US)
26AQI (US)
21AQI (US)
25AQI (US)
25AQI (US)
27AQI (US)
25AQI (US)
26AQI (US)
20AQI (US)
23AQI (US)
23AQI (US)
24AQI (US)
25AQI (US)
24AQI (US)
22AQI (US)
23AQI (US)
21AQI (US)
22AQI (US)
22AQI (US)
24AQI (US)
24AQI (US)
26AQI (US)
28AQI (US)
28AQI (US)
25AQI (US)
26AQI (US)
30AQI (US)
28AQI (US)
29AQI (US)
27AQI (US)
27AQI (US)
29AQI (US)
30AQI (US)
27AQI (US)
29AQI (US)
33AQI (US)
30AQI (US)
34AQI (US)
35AQI (US)
35AQI (US)
44AQI (US)
38AQI (US)
32AQI (US)
46AQI (US)
42AQI (US)
40AQI (US)
42AQI (US)
29AQI (US)
26AQI (US)
30AQI (US)
43AQI (US)
44AQI (US)
43AQI (US)
52AQI (US)
41AQI (US)
34AQI (US)
49AQI (US)
44AQI (US)
45AQI (US)
32AQI (US)
38AQI (US)
38AQI (US)
40AQI (US)
38AQI (US)
40AQI (US)
27AQI (US)
28AQI (US)
36AQI (US)
25AQI (US)
26AQI (US)
26AQI (US)
30AQI (US)
32AQI (US)
26AQI (US)
24AQI (US)
28AQI (US)
26AQI (US)
27AQI (US)
30AQI (US)
24AQI (US)
31AQI (US)
28AQI (US)
24AQI (US)
25AQI (US)
26AQI (US)
23AQI (US)
25AQI (US)
26AQI (US)
26AQI (US)
26AQI (US)
25AQI (US)
24AQI (US)
23AQI (US)
26AQI (US)
30AQI (US)
27AQI (US)
28AQI (US)
34AQI (US)
38AQI (US)
43AQI (US)
29AQI (US)
31AQI (US)
25AQI (US)
27AQI (US)
28AQI (US)
32AQI (US)
26AQI (US)
31AQI (US)
27AQI (US)
25AQI (US)
25AQI (US)
28AQI (US)
40AQI (US)
43AQI (US)
37AQI (US)
30AQI (US)
35AQI (US)
24AQI (US)
35AQI (US)
30AQI (US)
29AQI (US)
No. of days
202634AQI (US)
Highest AQI (US) recorded in
February43AQI (US)
Lowest AQI (US) recorded in
June24AQI (US)
202532AQI (US)
Highest AQI (US) recorded in
October39AQI (US)
Lowest AQI (US) recorded in
April21AQI (US)
202430AQI (US)
Highest AQI (US) recorded in
August37AQI (US)
Lowest AQI (US) recorded in
November23AQI (US)
202337AQI (US)
Highest AQI (US) recorded in
June52AQI (US)
Lowest AQI (US) recorded in
October29AQI (US)
202233AQI (US)
Highest AQI (US) recorded in
January49AQI (US)
Lowest AQI (US) recorded in
August22AQI (US)
202133AQI (US)
Highest AQI (US) recorded in
February41AQI (US)
Lowest AQI (US) recorded in
September21AQI (US)
202029AQI (US)
Highest AQI (US) recorded in
November35AQI (US)
Lowest AQI (US) recorded in
October23AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Brossard's annual 2026 AQI (US) (34) shows an average percentage change of 5.7% (worsened AQI (US)) compared to previous years: 2020 (29), 2021 (33), 2022 (33), 2023 (37), 2024 (30), 2025 (32).