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!
August Air Quality Analysis
Ouhai, Wenzhou, Zhejiang, China
AQI Trends: Highest and Lowest
Same Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 59 of Moderate air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Ouhai, Wenzhou, Zhejiang, China
5 AM5th Aug 2025
6 PM
4 AM6th Aug 2025
60AQI
45AQI
57AQI
53AQI
In the last 24 hours,
Ouhai's AQI reached its highest point of 60 at 7 AM during the Day, while the lowest point, 45, was recorded at 5 PM during the Day between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Ouhai, Wenzhou, Zhejiang, China
26°C24/30°C
25°C24/27°C
25°C23/27°C
25°C22/28°C
26°C22/31°C
26°C23/29°C
25°C23/27°C
28°C23/35°C
29°C23/34°C
29°C26/34°C
28°C26/31°C
28°C25/31°C
26°C24/27°C
26°C25/27°C
26°C24/27°C
25°C24/27°C
27°C23/31°C
27°C23/31°C
26°C24/31°C
26°C24/30°C
27°C23/31°C
26°C23/31°C
28°C22/34°C
28°C22/35°C
29°C24/36°C
29°C25/35°C
29°C25/35°C
29°C26/34°C
28°C25/33°C
28°C24/32°C
--°C/°C
48AQI
48AQI
52AQI
49AQI
2025 Days Vs Air Quality
Ouhai, Wenzhou, Zhejiang, China
13%
28
66%
142
21%
46
Total number of days with different AQI categories in last 218 days in 2025 (147 days remaining)
Under WHO’s Safe Air Quality Limits: 13%
Health Risk Level:
Extreme
In 2025, 13% of 218 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 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
113AQI
102AQI
112AQI
91AQI
104AQI
118AQI
134AQI
126AQI
122AQI
88AQI
98AQI
100AQI
113AQI
108AQI
137AQI
99AQI
119AQI
102AQI
110AQI
120AQI
144AQI
138AQI
117AQI
89AQI
91AQI
69AQI
68AQI
72AQI
104AQI
87AQI
97AQI
68AQI
53AQI
100AQI
109AQI
93AQI
116AQI
91AQI
72AQI
84AQI
92AQI
88AQI
97AQI
137AQI
101AQI
141AQI
114AQI
126AQI
79AQI
113AQI
64AQI
69AQI
76AQI
67AQI
131AQI
134AQI
144AQI
147AQI
119AQI
121AQI
112AQI
108AQI
76AQI
61AQI
58AQI
78AQI
98AQI
96AQI
93AQI
118AQI
88AQI
77AQI
74AQI
41AQI
72AQI
78AQI
88AQI
86AQI
110AQI
88AQI
97AQI
103AQI
120AQI
134AQI
121AQI
121AQI
71AQI
85AQI
67AQI
68AQI
67AQI
88AQI
100AQI
97AQI
89AQI
95AQI
94AQI
89AQI
118AQI
83AQI
95AQI
88AQI
86AQI
98AQI
86AQI
89AQI
112AQI
98AQI
81AQI
103AQI
88AQI
90AQI
72AQI
74AQI
54AQI
76AQI
81AQI
82AQI
76AQI
69AQI
74AQI
76AQI
86AQI
64AQI
81AQI
79AQI
93AQI
70AQI
75AQI
64AQI
72AQI
69AQI
69AQI
65AQI
68AQI
78AQI
79AQI
54AQI
74AQI
76AQI
58AQI
63AQI
65AQI
69AQI
103AQI
87AQI
70AQI
68AQI
52AQI
71AQI
75AQI
71AQI
81AQI
61AQI
76AQI
60AQI
70AQI
70AQI
66AQI
64AQI
53AQI
46AQI
50AQI
49AQI
54AQI
53AQI
50AQI
59AQI
58AQI
54AQI
51AQI
59AQI
66AQI
58AQI
63AQI
61AQI
65AQI
64AQI
55AQI
53AQI
45AQI
46AQI
50AQI
49AQI
54AQI
48AQI
41AQI
34AQI
39AQI
45AQI
50AQI
47AQI
51AQI
51AQI
59AQI
70AQI
66AQI
70AQI
55AQI
45AQI
45AQI
37AQI
45AQI
42AQI
41AQI
38AQI
39AQI
39AQI
38AQI
38AQI
43AQI
54AQI
57AQI
61AQI
62AQI
59AQI
106AQI
101AQI
91AQI
87AQI
72AQI
60AQI
47AQI
60AQI
No. of days
202580AQI
Highest AQI recorded in
January106AQI
Lowest AQI recorded in
July47AQI
202477AQI
Highest AQI recorded in
January121AQI
Lowest AQI recorded in
July52AQI
202383AQI
Highest AQI recorded in
March107AQI
Lowest AQI recorded in
July60AQI
202278AQI
Highest AQI recorded in
January94AQI
Lowest AQI recorded in
October64AQI
202181AQI
Highest AQI recorded in
January112AQI
Lowest AQI recorded in
September60AQI
202081AQI
Highest AQI recorded in
April104AQI
Lowest AQI recorded in
August61AQI
Most & Least Polluted Years Over the Last 6 Years
Ouhai's annual 2025 AQI (80) shows an average percentage change of 0.09% (worsened AQI) compared to previous years: 2020 (81), 2021 (81), 2022 (78), 2023 (83), 2024 (77).