Ouhai, Wenzhou, Zhejiang, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
February Air Quality Analysis
Ouhai, Wenzhou, Zhejiang, China
AQI Trends: Highest and Lowest
Same Day Analysis (18th February):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 75 of Moderate air quality, showing improvement over 2025, 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Feb - 18th Feb 2026
Ouhai, Wenzhou, Zhejiang, China
6 AM17th Feb 2026
5 PM
5 AM18th Feb 2026
82AQI
27AQI
97AQI
71AQI
In the last 24 hours,
Ouhai's AQI reached its highest point of 97 at 7 PM during the Night, while the lowest point, 27, was recorded at 7 AM during the Day between 17th Feb and 18th Feb 2026.
Day & Night AQI Trend : Jan - Feb 2026
Ouhai, Wenzhou, Zhejiang, China
9°C5/12°C
6°C4/10°C
6°C3/9°C
8°C4/13°C
9°C5/14°C
12°C10/14°C
16°C11/21°C
10°C8/11°C
9°C8/12°C
10°C7/13°C
12°C11/14°C
9°C7/10°C
8°C7/10°C
10°C6/14°C
9°C6/12°C
13°C7/18°C
16°C12/23°C
12°C9/14°C
8°C6/10°C
6°C3/10°C
6°C1/10°C
13°C7/19°C
12°C9/15°C
12°C8/16°C
13°C9/18°C
18°C14/24°C
17°C14/22°C
12°C9/15°C
10°C8/12°C
11°C7/16°C
76AQI
67AQI
73AQI
66AQI
2026 Days Vs Air Quality
Ouhai, Wenzhou, Zhejiang, China
12%
6
47%
23
41%
20
Total number of days with different AQI categories in last 50 days in 2026 (315 days remaining)
Under WHO’s Safe Air Quality Limits: 12%
Health Risk Level:
Extreme
In 2026, 12% of 50 days were within WHO’s safe air quality limits. The risk of health issues is Extreme, potentially causing respiratory problems, heart disease, skin issues, and stress, especially for children, the elderly, and those with pre-existing conditions.
Annual Air Quality Insights
Ouhai, Wenzhou, Zhejiang, China
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
52AQI (US)
56AQI (US)
111AQI (US)
141AQI (US)
104AQI (US)
100AQI (US)
111AQI (US)
119AQI (US)
134AQI (US)
129AQI (US)
108AQI (US)
100AQI (US)
124AQI (US)
126AQI (US)
113AQI (US)
124AQI (US)
144AQI (US)
124AQI (US)
96AQI (US)
18AQI (US)
57AQI (US)
93AQI (US)
106AQI (US)
106AQI (US)
146AQI (US)
113AQI (US)
46AQI (US)
65AQI (US)
59AQI (US)
52AQI (US)
17AQI (US)
34AQI (US)
67AQI (US)
92AQI (US)
56AQI (US)
78AQI (US)
91AQI (US)
25AQI (US)
58AQI (US)
59AQI (US)
60AQI (US)
77AQI (US)
139AQI (US)
120AQI (US)
76AQI (US)
79AQI (US)
50AQI (US)
56AQI (US)
75AQI (US)
97AQI (US)
72AQI (US)
No. of days
202687AQI (US)
Highest AQI (US) recorded in
January97AQI (US)
Lowest AQI (US) recorded in
February72AQI (US)
202577AQI (US)
Highest AQI (US) recorded in
January106AQI (US)
Lowest AQI (US) recorded in
July47AQI (US)
202477AQI (US)
Highest AQI (US) recorded in
January121AQI (US)
Lowest AQI (US) recorded in
July52AQI (US)
202383AQI (US)
Highest AQI (US) recorded in
March107AQI (US)
Lowest AQI (US) recorded in
July60AQI (US)
202278AQI (US)
Highest AQI (US) recorded in
January94AQI (US)
Lowest AQI (US) recorded in
October64AQI (US)
202181AQI (US)
Highest AQI (US) recorded in
January112AQI (US)
Lowest AQI (US) recorded in
September60AQI (US)
202081AQI (US)
Highest AQI (US) recorded in
April104AQI (US)
Lowest AQI (US) recorded in
August61AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Ouhai's annual 2026 AQI (US) (87) shows an average percentage change of 10.1% (worsened AQI (US)) compared to previous years: 2020 (81), 2021 (81), 2022 (78), 2023 (83), 2024 (77), 2025 (77).