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!
March Air Quality Analysis
Wellington, Wellington, New Zealand
AQI Trends: Highest and Lowest
Same Day Analysis (15th March):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 21 of Good air quality, showing improvement over 2025 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 14th Mar - 15th Mar 2026
Wellington, Wellington, New Zealand
7 AM14th Mar 2026
8 PM
6 AM15th Mar 2026
54AQI
12AQI
48AQI
8AQI
In the last 24 hours,
Wellington's AQI reached its highest point of 54 at 12 PM during the Day, while the lowest point, 8, was recorded at 6 AM during the Night between 14th Mar and 15th Mar 2026.
Day & Night AQI Trend : Feb - Mar 2026
Wellington, Wellington, New Zealand
16°C15/16°C
14°C13/15°C
14°C13/16°C
16°C13/18°C
17°C15/19°C
17°C16/18°C
17°C13/19°C
15°C12/17°C
16°C15/19°C
15°C12/18°C
16°C15/19°C
15°C11/19°C
17°C16/18°C
14°C13/14°C
14°C11/17°C
14°C10/17°C
11°C9/11°C
12°C10/13°C
14°C12/16°C
15°C12/17°C
16°C15/18°C
17°C15/19°C
17°C16/18°C
14°C13/15°C
13°C10/15°C
13°C10/17°C
15°C11/17°C
17°C15/21°C
15°C12/16°C
15°C12/17°C
34AQI
21AQI
30AQI
23AQI
2026 Days Vs Air Quality
Wellington, Wellington, New Zealand
100%
74
Total number of days with different AQI categories in last 75 days in 2026 (290 days remaining)
Under WHO’s Safe Air Quality Limits: 100%
Health Risk Level:
Very Low
In 2026, 100% of 75 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
Wellington, Wellington, New Zealand
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
20AQI (US)
14AQI (US)
13AQI (US)
18AQI (US)
27AQI (US)
22AQI (US)
31AQI (US)
26AQI (US)
29AQI (US)
26AQI (US)
30AQI (US)
29AQI (US)
30AQI (US)
30AQI (US)
25AQI (US)
20AQI (US)
12AQI (US)
17AQI (US)
24AQI (US)
28AQI (US)
19AQI (US)
16AQI (US)
14AQI (US)
14AQI (US)
34AQI (US)
32AQI (US)
26AQI (US)
19AQI (US)
24AQI (US)
22AQI (US)
22AQI (US)
31AQI (US)
30AQI (US)
16AQI (US)
19AQI (US)
18AQI (US)
27AQI (US)
20AQI (US)
33AQI (US)
23AQI (US)
22AQI (US)
32AQI (US)
37AQI (US)
27AQI (US)
25AQI (US)
20AQI (US)
22AQI (US)
28AQI (US)
24AQI (US)
32AQI (US)
23AQI (US)
24AQI (US)
30AQI (US)
39AQI (US)
49AQI (US)
34AQI (US)
35AQI (US)
27AQI (US)
21AQI (US)
23AQI (US)
30AQI (US)
26AQI (US)
28AQI (US)
27AQI (US)
21AQI (US)
22AQI (US)
31AQI (US)
29AQI (US)
25AQI (US)
26AQI (US)
25AQI (US)
27AQI (US)
27AQI (US)
21AQI (US)
23AQI (US)
27.428571428571427AQI (US)
25.866666666666667AQI (US)
No. of days
202625.256756756756758AQI (US)
Highest AQI (US) recorded in
February27.428571428571427AQI (US)
Lowest AQI (US) recorded in
January23AQI (US)
202533.07671232876712AQI (US)
Highest AQI (US) recorded in
June57.53333333333333AQI (US)
Lowest AQI (US) recorded in
March21.129032258064516AQI (US)
202432.16803278688525AQI (US)
Highest AQI (US) recorded in
June54.86666666666667AQI (US)
Lowest AQI (US) recorded in
April13AQI (US)
202323.329545454545453AQI (US)
Highest AQI (US) recorded in
May25.59090909090909AQI (US)
Lowest AQI (US) recorded in
March22.64516129032258AQI (US)
202227.095846645367413AQI (US)
Highest AQI (US) recorded in
July40.63636363636363AQI (US)
Lowest AQI (US) recorded in
August14AQI (US)
202127.53469387755102AQI (US)
Highest AQI (US) recorded in
July36.206896551724135AQI (US)
Lowest AQI (US) recorded in
October21.266666666666666AQI (US)
Most & Least Polluted Years Over the Last 6 Years
Wellington's annual 2026 AQI (US) (25.256756756756758) shows an average percentage change of -10.3% (improved AQI (US)) compared to previous years: 2021 (27.53469387755102), 2022 (27.095846645367413), 2023 (23.329545454545453), 2024 (32.16803278688525), 2025 (33.07671232876712).