Changgeng, Changde, Hunan, 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
Changgeng, Changde, Hunan, China
AQI Trends: Highest and Lowest
Same Day Analysis (3rd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 66 of Moderate air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Changgeng, Changde, Hunan, China
5 AM4th Aug 2025
7 PM
4 AM5th Aug 2025
77AQI
54AQI
65AQI
60AQI
In the last 24 hours,
Changgeng's AQI reached its highest point of 77 at 9 AM during the Day, while the lowest point, 54, was recorded at 5 PM during the Day between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Changgeng, Changde, Hunan, China
32°C28/37°C
31°C26/36°C
31°C26/37°C
29°C25/34°C
28°C25/33°C
27°C24/32°C
28°C24/31°C
29°C25/33°C
30°C25/35°C
32°C27/38°C
33°C28/38°C
30°C28/32°C
30°C26/35°C
29°C25/34°C
28°C25/32°C
28°C25/32°C
27°C25/30°C
26°C24/29°C
28°C24/33°C
29°C25/34°C
30°C26/34°C
29°C25/32°C
29°C25/33°C
29°C25/34°C
29°C26/33°C
29°C25/33°C
30°C25/34°C
30°C26/35°C
31°C26/37°C
32°C27/37°C
--°C/°C
62AQI
62AQI
60AQI
60AQI
2025 Days Vs Air Quality
Changgeng, Changde, Hunan, China
6%
12
51%
109
31%
66
11%
23
2%
4
0.4%
1
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Under WHO’s Safe Air Quality Limits: 6%
Health Risk Level:
Extreme
In 2025, 6% of 217 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
Changgeng, Changde, Hunan, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
171AQI
187AQI
196AQI
217AQI
175AQI
177AQI
156AQI
135AQI
144AQI
146AQI
150AQI
135AQI
177AQI
169AQI
128AQI
140AQI
147AQI
163AQI
161AQI
170AQI
184AQI
205AQI
239AQI
160AQI
102AQI
104AQI
105AQI
145AQI
287AQI
168AQI
180AQI
137AQI
150AQI
126AQI
127AQI
137AQI
112AQI
129AQI
78AQI
92AQI
107AQI
120AQI
125AQI
145AQI
123AQI
154AQI
123AQI
105AQI
90AQI
126AQI
142AQI
156AQI
136AQI
160AQI
153AQI
156AQI
118AQI
105AQI
130AQI
145AQI
121AQI
81AQI
104AQI
93AQI
121AQI
120AQI
103AQI
108AQI
92AQI
95AQI
125AQI
121AQI
89AQI
88AQI
92AQI
93AQI
79AQI
87AQI
85AQI
84AQI
92AQI
101AQI
92AQI
111AQI
127AQI
126AQI
94AQI
104AQI
88AQI
94AQI
88AQI
96AQI
109AQI
120AQI
117AQI
119AQI
119AQI
130AQI
119AQI
99AQI
114AQI
491AQI
170AQI
174AQI
152AQI
144AQI
126AQI
129AQI
105AQI
127AQI
99AQI
95AQI
98AQI
90AQI
96AQI
92AQI
86AQI
100AQI
97AQI
74AQI
91AQI
90AQI
97AQI
99AQI
87AQI
115AQI
131AQI
77AQI
95AQI
80AQI
80AQI
88AQI
99AQI
134AQI
96AQI
85AQI
93AQI
125AQI
97AQI
92AQI
77AQI
60AQI
83AQI
104AQI
104AQI
94AQI
114AQI
84AQI
84AQI
74AQI
70AQI
51AQI
70AQI
70AQI
99AQI
85AQI
87AQI
75AQI
74AQI
70AQI
77AQI
70AQI
72AQI
69AQI
64AQI
70AQI
65AQI
64AQI
57AQI
52AQI
45AQI
48AQI
54AQI
43AQI
55AQI
61AQI
43AQI
58AQI
51AQI
50AQI
51AQI
50AQI
45AQI
48AQI
45AQI
51AQI
64AQI
67AQI
69AQI
66AQI
58AQI
70AQI
70AQI
64AQI
65AQI
62AQI
61AQI
68AQI
58AQI
66AQI
65AQI
57AQI
45AQI
46AQI
46AQI
53AQI
56AQI
56AQI
55AQI
57AQI
59AQI
56AQI
63AQI
67AQI
66AQI
165AQI
127AQI
102AQI
126AQI
94AQI
63AQI
58AQI
65AQI
No. of days
2025104AQI
Highest AQI recorded in
January165AQI
Lowest AQI recorded in
July58AQI
2024100AQI
Highest AQI recorded in
December146AQI
Lowest AQI recorded in
July51AQI
2023104AQI
Highest AQI recorded in
January184AQI
Lowest AQI recorded in
July59AQI
2022105AQI
Highest AQI recorded in
January169AQI
Lowest AQI recorded in
July49AQI
2021106AQI
Highest AQI recorded in
December152AQI
Lowest AQI recorded in
July74AQI
202095AQI
Highest AQI recorded in
December166AQI
Lowest AQI recorded in
June60AQI
Most & Least Polluted Years Over the Last 6 Years
Changgeng's annual 2025 AQI (104) shows an average percentage change of 2.5% (worsened AQI) compared to previous years: 2020 (95), 2021 (106), 2022 (105), 2023 (104), 2024 (100).