Xiasha, Hangzhou, Zhejiang, China Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Xiasha, Hangzhou, Zhejiang, China
AQI Trends: Highest and Lowest
Same Day Analysis (17th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 60 of Moderate air quality, showing improvement over 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Xiasha, Hangzhou, Zhejiang, China
5 AM17th Sep 2025
6 PM
4 AM18th Sep 2025
71AQI
58AQI
61AQI
55AQI
In the last 24 hours,
Xiasha's AQI reached its highest point of 71 at 5 PM during the Day, while the lowest point, 55, was recorded at 12 AM during the Night between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Xiasha, Hangzhou, Zhejiang, China
31°C27/36°C
31°C28/37°C
31°C26/36°C
30°C26/36°C
31°C26/37°C
32°C28/39°C
30°C25/38°C
29°C25/34°C
30°C26/35°C
31°C26/36°C
30°C26/36°C
31°C27/36°C
29°C25/36°C
28°C25/33°C
26°C25/29°C
29°C24/36°C
29°C25/34°C
30°C26/35°C
30°C26/36°C
30°C26/35°C
30°C26/38°C
26°C24/31°C
26°C24/29°C
26°C23/30°C
29°C25/35°C
27°C25/31°C
28°C25/33°C
29°C25/34°C
30°C26/36°C
28°C25/34°C
--°C/°C
58AQI
57AQI
58AQI
58AQI
2025 Days Vs Air Quality
Xiasha, Hangzhou, Zhejiang, China
13%
34
63%
165
21%
54
2%
6
0.3%
1
Total number of days with different AQI categories in last 261 days in 2025 (104 days remaining)
Under WHO’s Safe Air Quality Limits: 13%
Health Risk Level:
Extreme
In 2025, 13% of 261 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
Xiasha, Hangzhou, Zhejiang, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
145AQI
141AQI
146AQI
136AQI
161AQI
142AQI
146AQI
139AQI
90AQI
107AQI
112AQI
125AQI
138AQI
144AQI
81AQI
104AQI
113AQI
139AQI
134AQI
164AQI
172AQI
159AQI
130AQI
100AQI
82AQI
88AQI
58AQI
76AQI
128AQI
109AQI
119AQI
67AQI
118AQI
116AQI
110AQI
94AQI
120AQI
73AQI
74AQI
80AQI
104AQI
118AQI
137AQI
134AQI
146AQI
138AQI
106AQI
110AQI
92AQI
110AQI
85AQI
75AQI
104AQI
133AQI
129AQI
159AQI
151AQI
142AQI
120AQI
108AQI
99AQI
68AQI
69AQI
79AQI
88AQI
115AQI
124AQI
98AQI
144AQI
135AQI
114AQI
90AQI
78AQI
63AQI
91AQI
66AQI
82AQI
92AQI
93AQI
78AQI
89AQI
81AQI
87AQI
89AQI
123AQI
98AQI
83AQI
89AQI
78AQI
68AQI
82AQI
90AQI
96AQI
108AQI
99AQI
110AQI
96AQI
101AQI
107AQI
98AQI
97AQI
237AQI
88AQI
98AQI
74AQI
80AQI
86AQI
100AQI
107AQI
118AQI
108AQI
91AQI
84AQI
90AQI
64AQI
76AQI
66AQI
90AQI
79AQI
86AQI
76AQI
82AQI
81AQI
64AQI
82AQI
95AQI
103AQI
84AQI
57AQI
58AQI
66AQI
75AQI
74AQI
78AQI
128AQI
98AQI
85AQI
93AQI
76AQI
65AQI
52AQI
70AQI
49AQI
84AQI
82AQI
84AQI
81AQI
71AQI
66AQI
85AQI
76AQI
59AQI
43AQI
67AQI
82AQI
63AQI
69AQI
82AQI
44AQI
63AQI
56AQI
55AQI
60AQI
49AQI
55AQI
38AQI
48AQI
60AQI
60AQI
56AQI
53AQI
54AQI
51AQI
48AQI
53AQI
67AQI
62AQI
56AQI
52AQI
54AQI
55AQI
49AQI
52AQI
56AQI
57AQI
57AQI
55AQI
53AQI
49AQI
51AQI
56AQI
54AQI
51AQI
55AQI
58AQI
62AQI
61AQI
62AQI
62AQI
52AQI
43AQI
41AQI
41AQI
41AQI
40AQI
42AQI
32AQI
36AQI
37AQI
40AQI
30AQI
40AQI
56AQI
60AQI
58AQI
64AQI
57AQI
50AQI
44AQI
45AQI
49AQI
54AQI
59AQI
63AQI
50AQI
42AQI
41AQI
45AQI
49AQI
49AQI
53AQI
58AQI
62AQI
55AQI
51AQI
55AQI
57AQI
59AQI
55AQI
47AQI
50AQI
50AQI
53AQI
56AQI
53AQI
56AQI
65AQI
67AQI
66AQI
73AQI
65AQI
58AQI
55AQI
58AQI
58AQI
57AQI
51AQI
65AQI
62AQI
60AQI
123AQI
112AQI
92AQI
97AQI
78AQI
57AQI
49AQI
53AQI
60AQI
No. of days
202581AQI
Highest AQI recorded in
January123AQI
Lowest AQI recorded in
July49AQI
202485AQI
Highest AQI recorded in
January146AQI
Lowest AQI recorded in
July55AQI
202392AQI
Highest AQI recorded in
December130AQI
Lowest AQI recorded in
July54AQI
202287AQI
Highest AQI recorded in
February114AQI
Lowest AQI recorded in
October67AQI
202184AQI
Highest AQI recorded in
January121AQI
Lowest AQI recorded in
July55AQI
202082AQI
Highest AQI recorded in
December132AQI
Lowest AQI recorded in
March64AQI
Most & Least Polluted Years Over the Last 6 Years
Xiasha's annual 2025 AQI (81) shows an average percentage change of -5.6% (improved AQI) compared to previous years: 2020 (82), 2021 (84), 2022 (87), 2023 (92), 2024 (85).