Halifax, Nova Scotia, 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
Halifax, Nova Scotia, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (24th September):
On this day, AQI across the 5 years varied significantly: 2026 ranks 1st highest AQI at 40 of Good air quality on the same day.
Day & Night AQI Trend: 23rd Sep - 24th Sep 2026
Halifax, Nova Scotia, Canada
6 AM23rd Sep 2026
7 PM
5 AM24th Sep 2026
44AQI
20AQI
91AQI
24AQI
In the last 24 hours,
Halifax's AQI reached its highest point of 91 at 4 AM during the Night, while the lowest point, 20, was recorded at 7 PM during the Day between 23rd Sep and 24th Sep 2026.
Day & Night AQI Trend : Aug - Sep 2026
Halifax, Nova Scotia, Canada
20°C17/25°C
19°C15/23°C
21°C17/25°C
22°C16/28°C
20°C13/28°C
19°C14/25°C
18°C13/25°C
17°C12/21°C
18°C15/21°C
19°C18/24°C
16°C15/19°C
14°C13/16°C
14°C12/16°C
14°C11/19°C
12°C8/17°C
17°C11/23°C
16°C12/21°C
14°C9/20°C
15°C8/20°C
19°C14/25°C
14°C9/21°C
15°C9/23°C
16°C11/23°C
15°C12/18°C
11°C6/16°C
9°C4/13°C
13°C8/16°C
10°C6/17°C
9°C4/17°C
10°C4/19°C
31AQI
24AQI
34AQI
26AQI
2026 Days Vs Air Quality
Halifax, Nova Scotia, Canada
95%
252
5%
12
Total number of days with different AQI categories in last 267 days in 2026 (98 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2026, 95% of 267 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
Halifax, Nova Scotia, Canada
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI (US)
12AQI (US)
11AQI (US)
14AQI (US)
20AQI (US)
37AQI (US)
15AQI (US)
13AQI (US)
17AQI (US)
17AQI (US)
13AQI (US)
11AQI (US)
16AQI (US)
27AQI (US)
16AQI (US)
16AQI (US)
16AQI (US)
27AQI (US)
17AQI (US)
17AQI (US)
11AQI (US)
48AQI (US)
56AQI (US)
47AQI (US)
47AQI (US)
48AQI (US)
45AQI (US)
48AQI (US)
52AQI (US)
52AQI (US)
47AQI (US)
47AQI (US)
51AQI (US)
48AQI (US)
50AQI (US)
49AQI (US)
42AQI (US)
39AQI (US)
47AQI (US)
48AQI (US)
46AQI (US)
45AQI (US)
43AQI (US)
51AQI (US)
51AQI (US)
42AQI (US)
45AQI (US)
45AQI (US)
44AQI (US)
40AQI (US)
42AQI (US)
37AQI (US)
34AQI (US)
41AQI (US)
45AQI (US)
45AQI (US)
38AQI (US)
37AQI (US)
39AQI (US)
41AQI (US)
57AQI (US)
48AQI (US)
46AQI (US)
43AQI (US)
39AQI (US)
41AQI (US)
41AQI (US)
41AQI (US)
34AQI (US)
43AQI (US)
44AQI (US)
41AQI (US)
38AQI (US)
36AQI (US)
39AQI (US)
36AQI (US)
33AQI (US)
34AQI (US)
38AQI (US)
37AQI (US)
37AQI (US)
42AQI (US)
37AQI (US)
34AQI (US)
28AQI (US)
29AQI (US)
33AQI (US)
30AQI (US)
28AQI (US)
25AQI (US)
33AQI (US)
33AQI (US)
28AQI (US)
32AQI (US)
31AQI (US)
30AQI (US)
27AQI (US)
33AQI (US)
29AQI (US)
30AQI (US)
34AQI (US)
28AQI (US)
33AQI (US)
33AQI (US)
33AQI (US)
31AQI (US)
32AQI (US)
32AQI (US)
29AQI (US)
28AQI (US)
24AQI (US)
26AQI (US)
31AQI (US)
33AQI (US)
29AQI (US)
24AQI (US)
24AQI (US)
26AQI (US)
27AQI (US)
24AQI (US)
22AQI (US)
30AQI (US)
33AQI (US)
31AQI (US)
28AQI (US)
27AQI (US)
34AQI (US)
31AQI (US)
28AQI (US)
29AQI (US)
23AQI (US)
46AQI (US)
54AQI (US)
55AQI (US)
58AQI (US)
54AQI (US)
50AQI (US)
46AQI (US)
42AQI (US)
51AQI (US)
47AQI (US)
45AQI (US)
30AQI (US)
27AQI (US)
18AQI (US)
19AQI (US)
25AQI (US)
28AQI (US)
29AQI (US)
26AQI (US)
24AQI (US)
25AQI (US)
27AQI (US)
25AQI (US)
24AQI (US)
21AQI (US)
24AQI (US)
27AQI (US)
29AQI (US)
27AQI (US)
23AQI (US)
24AQI (US)
27AQI (US)
26AQI (US)
30AQI (US)
26AQI (US)
25AQI (US)
24AQI (US)
20AQI (US)
23AQI (US)
24AQI (US)
22AQI (US)
25AQI (US)
27AQI (US)
29AQI (US)
27AQI (US)
26AQI (US)
35AQI (US)
30AQI (US)
28AQI (US)
28AQI (US)
25AQI (US)
24AQI (US)
24AQI (US)
29AQI (US)
27AQI (US)
29AQI (US)
32AQI (US)
31AQI (US)
29AQI (US)
31AQI (US)
30AQI (US)
32AQI (US)
29AQI (US)
39AQI (US)
49AQI (US)
37AQI (US)
28AQI (US)
39AQI (US)
31AQI (US)
23AQI (US)
35AQI (US)
38AQI (US)
33AQI (US)
40AQI (US)
39AQI (US)
41AQI (US)
38AQI (US)
34AQI (US)
40AQI (US)
45AQI (US)
37AQI (US)
29AQI (US)
33AQI (US)
37AQI (US)
45AQI (US)
45AQI (US)
29AQI (US)
26AQI (US)
24AQI (US)
26AQI (US)
32AQI (US)
30AQI (US)
35AQI (US)
45AQI (US)
35AQI (US)
26AQI (US)
33AQI (US)
39AQI (US)
28AQI (US)
25AQI (US)
28AQI (US)
34AQI (US)
37AQI (US)
25AQI (US)
29AQI (US)
30AQI (US)
27AQI (US)
28AQI (US)
23AQI (US)
26AQI (US)
28AQI (US)
22AQI (US)
27AQI (US)
24AQI (US)
25AQI (US)
27AQI (US)
32AQI (US)
32AQI (US)
29AQI (US)
24AQI (US)
31AQI (US)
28AQI (US)
27AQI (US)
33AQI (US)
25AQI (US)
29AQI (US)
28AQI (US)
27AQI (US)
37AQI (US)
28AQI (US)
29AQI (US)
35AQI (US)
40AQI (US)
28AQI (US)
44AQI (US)
38AQI (US)
30AQI (US)
35AQI (US)
26AQI (US)
32AQI (US)
32AQI (US)
29AQI (US)
No. of days
202633AQI (US)
Highest AQI (US) recorded in
February44AQI (US)
Lowest AQI (US) recorded in
June26AQI (US)
202523AQI (US)
Highest AQI (US) recorded in
June29AQI (US)
Lowest AQI (US) recorded in
May19AQI (US)
202418AQI (US)
Highest AQI (US) recorded in
August25AQI (US)
Lowest AQI (US) recorded in
November13AQI (US)
202322AQI (US)
Highest AQI (US) recorded in
June27AQI (US)
Lowest AQI (US) recorded in
January18AQI (US)
202221AQI (US)
Highest AQI (US) recorded in
July27AQI (US)
Lowest AQI (US) recorded in
May18AQI (US)
202122AQI (US)
Highest AQI (US) recorded in
August29AQI (US)
Lowest AQI (US) recorded in
January17AQI (US)
202022AQI (US)
Highest AQI (US) recorded in
July27AQI (US)
Lowest AQI (US) recorded in
September18AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Halifax's annual 2026 AQI (US) (33) shows an average percentage change of 55.6% (worsened AQI (US)) compared to previous years: 2020 (22), 2021 (22), 2022 (21), 2023 (22), 2024 (18), 2025 (23).