City Water Company Sub Station, Wancheng, Hainan, 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
City Water Company Sub Station, Wancheng, Hainan, China
AQI Trends: Highest and Lowest
Same Day Analysis (7th August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 52 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 8th Aug - 9th Aug 2025
City Water Company Sub Station, Wancheng, Hainan, China
6 AM8th Aug 2025
7 PM
5 AM9th Aug 2025
AQI
AQI
54AQI
30AQI
In the last 24 hours,
City Water Company Sub Station's AQI reached its highest point of 54 at 6 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 8th Aug and 9th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
City Water Company Sub Station, Wancheng, Hainan, China
28°C26/31°C
28°C25/30°C
28°C26/31°C
28°C26/32°C
28°C26/32°C
29°C26/32°C
29°C27/33°C
29°C27/33°C
29°C26/33°C
27°C25/28°C
27°C25/30°C
27°C26/28°C
28°C27/30°C
28°C26/31°C
27°C25/30°C
27°C25/31°C
28°C25/31°C
28°C25/31°C
28°C25/32°C
28°C26/32°C
29°C26/33°C
29°C26/34°C
29°C27/34°C
29°C27/33°C
30°C27/34°C
29°C27/33°C
29°C27/33°C
29°C27/31°C
28°C27/31°C
--°C/°C
--°C/°C
49AQI
42AQI
49AQI
47AQI
2025 Days Vs Air Quality
City Water Company Sub Station, Wancheng, Hainan, China
51%
111
45%
98
5%
10
Total number of days with different AQI categories in last 220 days in 2025 (145 days remaining)
Under WHO’s Safe Air Quality Limits: 51%
Health Risk Level:
Considerable
In 2025, 51% of 220 days were within WHO’s safe air quality limits, and 49% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
City Water Company Sub Station, Wancheng, Hainan, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
105AQI
89AQI
100AQI
94AQI
108AQI
115AQI
92AQI
94AQI
103AQI
109AQI
90AQI
86AQI
73AQI
71AQI
79AQI
90AQI
81AQI
84AQI
89AQI
88AQI
78AQI
78AQI
74AQI
63AQI
60AQI
55AQI
58AQI
62AQI
81AQI
73AQI
68AQI
49AQI
45AQI
45AQI
50AQI
53AQI
55AQI
66AQI
58AQI
68AQI
59AQI
51AQI
41AQI
52AQI
41AQI
63AQI
40AQI
60AQI
77AQI
69AQI
66AQI
60AQI
43AQI
46AQI
48AQI
49AQI
67AQI
62AQI
56AQI
55AQI
47AQI
55AQI
42AQI
45AQI
30AQI
39AQI
27AQI
55AQI
59AQI
58AQI
49AQI
49AQI
38AQI
47AQI
43AQI
63AQI
69AQI
76AQI
70AQI
74AQI
75AQI
78AQI
70AQI
70AQI
55AQI
60AQI
54AQI
56AQI
32AQI
32AQI
41AQI
57AQI
53AQI
54AQI
59AQI
43AQI
59AQI
54AQI
63AQI
61AQI
56AQI
56AQI
112AQI
111AQI
114AQI
108AQI
102AQI
72AQI
56AQI
54AQI
57AQI
57AQI
51AQI
57AQI
49AQI
50AQI
42AQI
51AQI
48AQI
54AQI
56AQI
58AQI
57AQI
55AQI
48AQI
54AQI
56AQI
47AQI
50AQI
45AQI
50AQI
58AQI
56AQI
42AQI
35AQI
31AQI
34AQI
37AQI
37AQI
41AQI
42AQI
33AQI
27AQI
31AQI
39AQI
54AQI
48AQI
41AQI
34AQI
41AQI
38AQI
40AQI
41AQI
44AQI
41AQI
37AQI
36AQI
39AQI
45AQI
47AQI
52AQI
41AQI
33AQI
34AQI
30AQI
39AQI
42AQI
39AQI
38AQI
38AQI
39AQI
34AQI
37AQI
30AQI
28AQI
27AQI
27AQI
25AQI
30AQI
29AQI
28AQI
33AQI
27AQI
26AQI
28AQI
28AQI
28AQI
29AQI
34AQI
42AQI
45AQI
45AQI
45AQI
49AQI
50AQI
50AQI
49AQI
49AQI
51AQI
50AQI
44AQI
38AQI
39AQI
38AQI
35AQI
37AQI
37AQI
38AQI
30AQI
32AQI
38AQI
47AQI
55AQI
55AQI
57AQI
57AQI
54AQI
56AQI
52AQI
84AQI
55AQI
54AQI
63AQI
44AQI
36AQI
39AQI
55AQI
No. of days
202554AQI
Highest AQI recorded in
January84AQI
Lowest AQI recorded in
June36AQI
202447AQI
Highest AQI recorded in
December83AQI
Lowest AQI recorded in
July31AQI
202361AQI
Highest AQI recorded in
December61AQI
Lowest AQI recorded in
November61AQI
202116AQI
Highest AQI recorded in
January70AQI
Lowest AQI recorded in
March5AQI
202034AQI
Highest AQI recorded in
December61AQI
Lowest AQI recorded in
July18AQI
Most & Least Polluted Years Over the Last 5 Years
City Water Company Sub Station's annual 2025 AQI (54) shows an average percentage change of 72.7% (worsened AQI) compared to previous years: 2020 (34), 2021 (16), 2023 (61), 2024 (47).