Dunedin, Otago, New Zealand 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
Dunedin, Otago, New Zealand
AQI Trends: Highest and Lowest
Same Day Analysis (14th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 23 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 15th Sep - 16th Sep 2025
Dunedin, Otago, New Zealand
7 AM15th Sep 2025
6 PM
6 AM16th Sep 2025
32AQI
18AQI
31AQI
19AQI
In the last 24 hours,
Dunedin's AQI reached its highest point of 32 at 3 PM during the Day, while the lowest point, 18, was recorded at 6 PM during the Day between 15th Sep and 16th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Dunedin, Otago, New Zealand
7°C5/12°C
6°C4/8°C
6°C4/7°C
8°C7/10°C
7°C5/10°C
6°C4/11°C
5°C2/9°C
5°C2/10°C
8°C4/12°C
8°C6/13°C
9°C5/13°C
11°C7/14°C
7°C4/12°C
6°C3/13°C
5°C3/9°C
7°C3/12°C
6°C4/8°C
7°C3/12°C
9°C5/15°C
9°C6/14°C
6°C4/8°C
5°C3/8°C
6°C2/12°C
8°C3/13°C
6°C4/8°C
7°C3/12°C
6°C3/9°C
6°C3/9°C
7°C4/11°C
10°C5/15°C
--°C/°C
24AQI
19AQI
32AQI
23AQI
2025 Days Vs Air Quality
Dunedin, Otago, New Zealand
80%
206
20%
51
Total number of days with different AQI categories in last 259 days in 2025 (106 days remaining)
Under WHO’s Safe Air Quality Limits: 80%
Health Risk Level:
Low
In 2025, 80% of 259 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
Dunedin, Otago, New Zealand
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
30AQI
26AQI
24AQI
30AQI
27AQI
30AQI
27AQI
28AQI
26AQI
24AQI
25AQI
25AQI
24AQI
23AQI
22AQI
22AQI
22AQI
22AQI
21AQI
23AQI
26AQI
27AQI
26AQI
26AQI
26AQI
27AQI
27AQI
30AQI
32AQI
29AQI
29AQI
28AQI
29AQI
30AQI
32AQI
30AQI
30AQI
31AQI
33AQI
30AQI
29AQI
27AQI
27AQI
27AQI
28AQI
32AQI
33AQI
31AQI
28AQI
29AQI
27AQI
27AQI
25AQI
27AQI
24AQI
24AQI
24AQI
26AQI
35AQI
36AQI
37AQI
31AQI
29AQI
29AQI
27AQI
24AQI
25AQI
24AQI
28AQI
24AQI
25AQI
28AQI
24AQI
26AQI
23AQI
23AQI
22AQI
24AQI
23AQI
26AQI
26AQI
25AQI
26AQI
25AQI
26AQI
25AQI
26AQI
25AQI
29AQI
31AQI
32AQI
33AQI
30AQI
29AQI
28AQI
29AQI
24AQI
25AQI
23AQI
25AQI
27AQI
29AQI
34AQI
27AQI
29AQI
29AQI
33AQI
32AQI
30AQI
27AQI
31AQI
34AQI
40AQI
42AQI
45AQI
44AQI
45AQI
43AQI
39AQI
32AQI
33AQI
34AQI
36AQI
42AQI
43AQI
46AQI
39AQI
40AQI
36AQI
39AQI
40AQI
40AQI
42AQI
41AQI
49AQI
52AQI
41AQI
39AQI
43AQI
44AQI
48AQI
53AQI
58AQI
55AQI
48AQI
48AQI
47AQI
48AQI
45AQI
47AQI
50AQI
53AQI
64AQI
56AQI
54AQI
53AQI
48AQI
54AQI
52AQI
52AQI
59AQI
58AQI
52AQI
59AQI
66AQI
73AQI
74AQI
74AQI
72AQI
70AQI
73AQI
78AQI
82AQI
78AQI
73AQI
69AQI
64AQI
70AQI
68AQI
71AQI
73AQI
73AQI
88AQI
68AQI
63AQI
71AQI
65AQI
63AQI
71AQI
67AQI
65AQI
67AQI
68AQI
63AQI
52AQI
53AQI
50AQI
52AQI
52AQI
46AQI
44AQI
47AQI
42AQI
42AQI
45AQI
54AQI
45AQI
48AQI
46AQI
39AQI
40AQI
27AQI
33AQI
35AQI
35AQI
33AQI
38AQI
44AQI
35AQI
36AQI
39AQI
32AQI
29AQI
30AQI
29AQI
27AQI
25AQI
28AQI
26AQI
23AQI
24AQI
24AQI
26AQI
25AQI
30AQI
27AQI
27AQI
25AQI
22AQI
20AQI
23AQI
21AQI
25AQI
21AQI
20AQI
22AQI
24AQI
36AQI
30AQI
27AQI
27AQI
26AQI
24AQI
23AQI
23AQI
23AQI
26AQI
28AQI
27AQI
32AQI
43AQI
64AQI
57AQI
29AQI
25AQI
No. of days
202538AQI
Highest AQI recorded in
June64AQI
Lowest AQI recorded in
September25AQI
202427AQI
Highest AQI recorded in
June50AQI
Lowest AQI recorded in
February12AQI
202317AQI
Highest AQI recorded in
January26AQI
Lowest AQI recorded in
December10AQI
202227AQI
Highest AQI recorded in
November62AQI
Lowest AQI recorded in
January16AQI
202116AQI
Highest AQI recorded in
November19AQI
Lowest AQI recorded in
April14AQI
Most & Least Polluted Years Over the Last 5 Years
Dunedin's annual 2025 AQI (38) shows an average percentage change of 82.06% (worsened AQI) compared to previous years: 2021 (16), 2022 (27), 2023 (17), 2024 (27).