Sydney, Nova Scotia, 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
Sydney, Nova Scotia, Canada
AQI Trends: Highest and Lowest
Same Day Analysis (2nd October):
On this day, AQI across the 2 years varied significantly: 2026 ranks 1st highest AQI at 32 of Good air quality on the same day.
Day & Night AQI Trend: 2nd Oct - 3rd Oct 2026
Sydney, Nova Scotia, Canada
6 AM2nd Oct 2026
7 PM
5 AM3rd Oct 2026
42AQI
23AQI
51AQI
19AQI
In the last 24 hours,
Sydney's AQI reached its highest point of 51 at 11 PM during the Night, while the lowest point, 19, was recorded at 4 AM during the Night between 2nd Oct and 3rd Oct 2026.
Day & Night AQI Trend : Sep - Oct 2026
Sydney, Nova Scotia, Canada
16°C14/18°C
14°C14/15°C
14°C14/16°C
15°C14/18°C
15°C12/20°C
13°C10/16°C
14°C9/18°C
13°C12/16°C
13°C10/17°C
15°C10/20°C
18°C16/23°C
14°C12/17°C
15°C9/22°C
15°C11/20°C
13°C11/16°C
11°C9/13°C
10°C6/14°C
10°C8/12°C
11°C8/15°C
11°C7/14°C
11°C6/19°C
13°C9/19°C
13°C11/17°C
13°C11/15°C
12°C10/14°C
13°C10/14°C
14°C13/16°C
16°C13/21°C
17°C14/22°C
13°C8/16°C
31AQI
22AQI
32AQI
24AQI
2026 Days Vs Air Quality
Sydney, Nova Scotia, Canada
97%
263
3%
9
Total number of days with different AQI categories in last 276 days in 2026 (89 days remaining)
Under WHO’s Safe Air Quality Limits: 97%
Health Risk Level:
Very Low
In 2026, 97% of 276 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
Sydney, Nova Scotia, Canada
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI (US)
13AQI (US)
9AQI (US)
14AQI (US)
17AQI (US)
42AQI (US)
32AQI (US)
15AQI (US)
20AQI (US)
17AQI (US)
17AQI (US)
9AQI (US)
14AQI (US)
26AQI (US)
15AQI (US)
11AQI (US)
12AQI (US)
14AQI (US)
14AQI (US)
16AQI (US)
16AQI (US)
47AQI (US)
55AQI (US)
48AQI (US)
48AQI (US)
47AQI (US)
44AQI (US)
47AQI (US)
51AQI (US)
49AQI (US)
45AQI (US)
47AQI (US)
50AQI (US)
49AQI (US)
50AQI (US)
48AQI (US)
41AQI (US)
38AQI (US)
46AQI (US)
47AQI (US)
47AQI (US)
47AQI (US)
44AQI (US)
52AQI (US)
49AQI (US)
42AQI (US)
44AQI (US)
46AQI (US)
43AQI (US)
41AQI (US)
43AQI (US)
37AQI (US)
34AQI (US)
39AQI (US)
42AQI (US)
42AQI (US)
35AQI (US)
34AQI (US)
38AQI (US)
42AQI (US)
53AQI (US)
47AQI (US)
45AQI (US)
43AQI (US)
39AQI (US)
40AQI (US)
40AQI (US)
41AQI (US)
35AQI (US)
41AQI (US)
42AQI (US)
40AQI (US)
38AQI (US)
35AQI (US)
36AQI (US)
34AQI (US)
32AQI (US)
32AQI (US)
36AQI (US)
36AQI (US)
36AQI (US)
41AQI (US)
36AQI (US)
34AQI (US)
29AQI (US)
30AQI (US)
35AQI (US)
31AQI (US)
28AQI (US)
25AQI (US)
32AQI (US)
34AQI (US)
28AQI (US)
31AQI (US)
29AQI (US)
28AQI (US)
26AQI (US)
31AQI (US)
28AQI (US)
30AQI (US)
33AQI (US)
28AQI (US)
34AQI (US)
33AQI (US)
35AQI (US)
30AQI (US)
34AQI (US)
32AQI (US)
30AQI (US)
29AQI (US)
24AQI (US)
27AQI (US)
31AQI (US)
33AQI (US)
29AQI (US)
26AQI (US)
23AQI (US)
27AQI (US)
27AQI (US)
25AQI (US)
21AQI (US)
30AQI (US)
33AQI (US)
31AQI (US)
29AQI (US)
27AQI (US)
34AQI (US)
32AQI (US)
29AQI (US)
29AQI (US)
25AQI (US)
45AQI (US)
53AQI (US)
56AQI (US)
58AQI (US)
54AQI (US)
50AQI (US)
46AQI (US)
42AQI (US)
51AQI (US)
48AQI (US)
45AQI (US)
30AQI (US)
27AQI (US)
22AQI (US)
19AQI (US)
26AQI (US)
27AQI (US)
30AQI (US)
27AQI (US)
22AQI (US)
23AQI (US)
26AQI (US)
26AQI (US)
26AQI (US)
21AQI (US)
19AQI (US)
26AQI (US)
25AQI (US)
23AQI (US)
21AQI (US)
21AQI (US)
21AQI (US)
25AQI (US)
25AQI (US)
26AQI (US)
22AQI (US)
23AQI (US)
20AQI (US)
18AQI (US)
19AQI (US)
19AQI (US)
25AQI (US)
26AQI (US)
25AQI (US)
26AQI (US)
25AQI (US)
38AQI (US)
43AQI (US)
28AQI (US)
34AQI (US)
26AQI (US)
23AQI (US)
26AQI (US)
29AQI (US)
30AQI (US)
32AQI (US)
33AQI (US)
30AQI (US)
29AQI (US)
30AQI (US)
30AQI (US)
37AQI (US)
32AQI (US)
31AQI (US)
46AQI (US)
37AQI (US)
29AQI (US)
40AQI (US)
33AQI (US)
19AQI (US)
32AQI (US)
35AQI (US)
37AQI (US)
38AQI (US)
37AQI (US)
39AQI (US)
37AQI (US)
33AQI (US)
37AQI (US)
44AQI (US)
34AQI (US)
29AQI (US)
34AQI (US)
38AQI (US)
39AQI (US)
37AQI (US)
30AQI (US)
29AQI (US)
26AQI (US)
27AQI (US)
32AQI (US)
31AQI (US)
32AQI (US)
36AQI (US)
37AQI (US)
27AQI (US)
30AQI (US)
35AQI (US)
30AQI (US)
25AQI (US)
28AQI (US)
37AQI (US)
37AQI (US)
25AQI (US)
32AQI (US)
26AQI (US)
26AQI (US)
25AQI (US)
18AQI (US)
21AQI (US)
23AQI (US)
21AQI (US)
26AQI (US)
22AQI (US)
24AQI (US)
25AQI (US)
31AQI (US)
30AQI (US)
30AQI (US)
23AQI (US)
31AQI (US)
28AQI (US)
23AQI (US)
27AQI (US)
21AQI (US)
25AQI (US)
21AQI (US)
23AQI (US)
33AQI (US)
27AQI (US)
24AQI (US)
27AQI (US)
32AQI (US)
37AQI (US)
27AQI (US)
29AQI (US)
24AQI (US)
22AQI (US)
32AQI (US)
35AQI (US)
32AQI (US)
27AQI (US)
43AQI (US)
37AQI (US)
30AQI (US)
36AQI (US)
24AQI (US)
33AQI (US)
31AQI (US)
26AQI (US)
34AQI (US)
No. of days
202632AQI (US)
Highest AQI (US) recorded in
February43AQI (US)
Lowest AQI (US) recorded in
June24AQI (US)
202522AQI (US)
Highest AQI (US) recorded in
July28AQI (US)
Lowest AQI (US) recorded in
September17AQI (US)
Most & Least Polluted Years Over the Last 2 Years
Sydney's annual 2026 AQI (US) (32) shows an average percentage change of 45.4% (worsened AQI (US)) compared to previous years: 2025 (22).