South Star Bridge, Hangzhou, 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
South Star Bridge, Hangzhou, Zhejiang, China
AQI Trends: Highest and Lowest
Same Day Analysis (3rd August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 58 of Moderate air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
South Star Bridge, Hangzhou, Zhejiang, China
5 AM3rd Aug 2025
7 PM
4 AM4th Aug 2025
72AQI
55AQI
58AQI
54AQI
In the last 24 hours,
South Star Bridge's AQI reached its highest point of 72 at 11 AM during the Day, while the lowest point, 54, was recorded at 2 AM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
South Star Bridge, Hangzhou, Zhejiang, China
32°C26/38°C
32°C27/37°C
30°C26/36°C
26°C26/27°C
28°C25/31°C
27°C25/31°C
26°C24/29°C
26°C24/29°C
28°C24/32°C
29°C25/34°C
29°C24/35°C
31°C27/37°C
30°C24/37°C
28°C25/32°C
28°C25/33°C
29°C26/33°C
29°C26/33°C
28°C26/31°C
28°C25/32°C
28°C25/32°C
27°C25/31°C
27°C26/30°C
27°C25/31°C
27°C25/30°C
27°C25/31°C
25°C24/26°C
27°C23/32°C
29°C24/33°C
29°C26/35°C
30°C26/36°C
--°C/°C
54AQI
49AQI
53AQI
53AQI
2025 Days Vs Air Quality
South Star Bridge, Hangzhou, Zhejiang, China
9%
20
61%
132
27%
57
2%
5
0.4%
1
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Under WHO’s Safe Air Quality Limits: 9%
Health Risk Level:
Extreme
In 2025, 9% of 216 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
South Star Bridge, Hangzhou, Zhejiang, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
150AQI
141AQI
146AQI
134AQI
155AQI
140AQI
148AQI
134AQI
92AQI
99AQI
107AQI
117AQI
136AQI
139AQI
82AQI
101AQI
111AQI
134AQI
131AQI
163AQI
165AQI
159AQI
138AQI
103AQI
87AQI
89AQI
64AQI
79AQI
131AQI
109AQI
119AQI
71AQI
116AQI
120AQI
108AQI
96AQI
119AQI
76AQI
75AQI
80AQI
103AQI
126AQI
132AQI
142AQI
134AQI
143AQI
107AQI
117AQI
91AQI
115AQI
90AQI
80AQI
101AQI
132AQI
132AQI
157AQI
149AQI
136AQI
111AQI
101AQI
89AQI
65AQI
60AQI
76AQI
86AQI
113AQI
120AQI
106AQI
121AQI
119AQI
96AQI
85AQI
72AQI
53AQI
85AQI
67AQI
80AQI
90AQI
90AQI
77AQI
88AQI
84AQI
93AQI
94AQI
122AQI
100AQI
86AQI
86AQI
82AQI
71AQI
84AQI
90AQI
105AQI
107AQI
95AQI
109AQI
100AQI
103AQI
113AQI
96AQI
94AQI
237AQI
88AQI
104AQI
76AQI
82AQI
85AQI
100AQI
109AQI
111AQI
103AQI
89AQI
87AQI
96AQI
73AQI
83AQI
71AQI
88AQI
82AQI
91AQI
79AQI
83AQI
81AQI
67AQI
75AQI
96AQI
103AQI
82AQI
57AQI
64AQI
69AQI
74AQI
78AQI
82AQI
121AQI
83AQI
83AQI
82AQI
74AQI
72AQI
51AQI
77AQI
50AQI
84AQI
87AQI
89AQI
88AQI
75AQI
74AQI
89AQI
87AQI
64AQI
52AQI
69AQI
83AQI
72AQI
73AQI
87AQI
57AQI
64AQI
57AQI
61AQI
69AQI
61AQI
57AQI
46AQI
50AQI
63AQI
59AQI
56AQI
52AQI
54AQI
55AQI
52AQI
58AQI
71AQI
69AQI
56AQI
56AQI
54AQI
57AQI
48AQI
55AQI
59AQI
62AQI
61AQI
55AQI
49AQI
46AQI
49AQI
59AQI
54AQI
52AQI
57AQI
63AQI
67AQI
65AQI
64AQI
64AQI
49AQI
46AQI
43AQI
44AQI
48AQI
47AQI
47AQI
40AQI
44AQI
42AQI
46AQI
34AQI
40AQI
57AQI
59AQI
58AQI
123AQI
113AQI
89AQI
98AQI
79AQI
61AQI
52AQI
58AQI
No. of days
202587AQI
Highest AQI recorded in
January123AQI
Lowest AQI recorded in
July52AQI
202477AQI
Highest AQI recorded in
January156AQI
Lowest AQI recorded in
July51AQI
2023112AQI
Highest AQI recorded in
December112AQI
Lowest AQI recorded in
November104AQI
202282AQI
Highest AQI recorded in
February103AQI
Lowest AQI recorded in
June63AQI
Most & Least Polluted Years Over the Last 4 Years
South Star Bridge's annual 2025 AQI (87) shows an average percentage change of -0.8% (improved AQI) compared to previous years: 2022 (82), 2023 (112), 2024 (77).