Wellington, Wellington, New Zealand Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Wellington, Wellington, New Zealand
AQI Trends: Highest and Lowest
Same Day Analysis (25th August ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 2nd highest AQI at 28 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 26th Aug - 27th Aug 2025
Wellington, Wellington, New Zealand
7 AM26th Aug 2025
5 PM
6 AM27th Aug 2025
AQI
AQI
31AQI
18AQI
In the last 24 hours,
Wellington's AQI reached its highest point of 31 at 10 PM during the Night, while the lowest point, 18, was recorded at 4 PM during the Night between 26th Aug and 27th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Wellington, Wellington, New Zealand
12°C11/13°C
13°C11/14°C
12°C10/13°C
9°C8/10°C
8°C7/10°C
9°C6/11°C
9°C8/10°C
9°C7/11°C
10°C8/13°C
9°C7/12°C
11°C10/13°C
11°C8/13°C
7°C7/8°C
7°C7/8°C
8°C7/9°C
8°C7/9°C
8°C6/10°C
8°C6/10°C
10°C7/13°C
10°C9/12°C
11°C9/11°C
11°C9/13°C
8°C7/9°C
9°C7/10°C
9°C8/10°C
8°C7/10°C
8°C7/11°C
9°C7/12°C
10°C9/12°C
--°C/°C
--°C/°C
31AQI
27AQI
38AQI
29AQI
2025 Days Vs Air Quality
Wellington, Wellington, New Zealand
85%
202
15%
35
Total number of days with different AQI categories in last 238 days in 2025 (127 days remaining)
Under WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2025, 85% of 238 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
Wellington, Wellington, New Zealand
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
26AQI
30AQI
25AQI
22AQI
26AQI
22AQI
22AQI
21AQI
22AQI
22AQI
20AQI
21AQI
23AQI
21AQI
21AQI
19AQI
21AQI
19AQI
20AQI
19AQI
20AQI
20AQI
25AQI
23AQI
24AQI
23AQI
27AQI
25AQI
26AQI
24AQI
24AQI
24AQI
22AQI
24AQI
26AQI
26AQI
25AQI
27AQI
26AQI
26AQI
26AQI
32AQI
23AQI
24AQI
28AQI
26AQI
26AQI
27AQI
26AQI
24AQI
22AQI
21AQI
21AQI
21AQI
22AQI
21AQI
20AQI
21AQI
22AQI
22AQI
21AQI
22AQI
20AQI
20AQI
20AQI
21AQI
22AQI
20AQI
21AQI
21AQI
21AQI
22AQI
23AQI
22AQI
21AQI
20AQI
20AQI
20AQI
21AQI
20AQI
21AQI
20AQI
21AQI
20AQI
21AQI
23AQI
22AQI
21AQI
21AQI
25AQI
25AQI
26AQI
23AQI
23AQI
24AQI
23AQI
22AQI
22AQI
23AQI
23AQI
23AQI
21AQI
24AQI
24AQI
24AQI
23AQI
27AQI
24AQI
26AQI
24AQI
21AQI
22AQI
23AQI
31AQI
30AQI
32AQI
30AQI
29AQI
29AQI
28AQI
27AQI
29AQI
29AQI
33AQI
33AQI
31AQI
33AQI
34AQI
29AQI
32AQI
36AQI
38AQI
32AQI
38AQI
35AQI
37AQI
35AQI
29AQI
38AQI
34AQI
38AQI
41AQI
49AQI
48AQI
45AQI
46AQI
46AQI
45AQI
45AQI
40AQI
35AQI
41AQI
35AQI
39AQI
36AQI
39AQI
36AQI
35AQI
42AQI
46AQI
55AQI
55AQI
56AQI
53AQI
59AQI
70AQI
74AQI
70AQI
76AQI
69AQI
66AQI
64AQI
73AQI
68AQI
74AQI
71AQI
68AQI
64AQI
64AQI
63AQI
65AQI
68AQI
65AQI
61AQI
58AQI
59AQI
57AQI
59AQI
62AQI
61AQI
58AQI
55AQI
57AQI
55AQI
52AQI
50AQI
49AQI
48AQI
48AQI
46AQI
43AQI
37AQI
39AQI
41AQI
40AQI
49AQI
49AQI
42AQI
44AQI
37AQI
39AQI
38AQI
26AQI
31AQI
34AQI
32AQI
30AQI
37AQI
31AQI
32AQI
30AQI
32AQI
28AQI
27AQI
28AQI
28AQI
24AQI
26AQI
29AQI
26AQI
24AQI
24AQI
23AQI
23AQI
22AQI
29AQI
28AQI
23AQI
24AQI
21AQI
25AQI
37AQI
58AQI
51AQI
28AQI
No. of days
202533AQI
Highest AQI recorded in
June58AQI
Lowest AQI recorded in
March21AQI
202432AQI
Highest AQI recorded in
June55AQI
Lowest AQI recorded in
April13AQI
202323AQI
Highest AQI recorded in
May26AQI
Lowest AQI recorded in
March23AQI
202227AQI
Highest AQI recorded in
July41AQI
Lowest AQI recorded in
August14AQI
202128AQI
Highest AQI recorded in
July36AQI
Lowest AQI recorded in
October21AQI
Most & Least Polluted Years Over the Last 5 Years
Wellington's annual 2025 AQI (33) shows an average percentage change of 22.9% (worsened AQI) compared to previous years: 2021 (28), 2022 (27), 2023 (23), 2024 (32).