Chenglingji, Rongjiawan, Hunan, 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
Chenglingji, Rongjiawan, Hunan, China
AQI Trends: Highest and Lowest
Same Day Analysis (19th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 50 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Sep - 20th Sep 2025
Chenglingji, Rongjiawan, Hunan, China
6 AM19th Sep 2025
6 PM
5 AM20th Sep 2025
60AQI
22AQI
61AQI
34AQI
In the last 24 hours,
Chenglingji's AQI reached its highest point of 61 at 2 AM during the Night, while the lowest point, 22, was recorded at 3 PM during the Day between 19th Sep and 20th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Chenglingji, Rongjiawan, Hunan, China
30°C26/35°C
29°C26/34°C
30°C25/36°C
32°C25/38°C
32°C27/38°C
31°C26/38°C
31°C26/38°C
32°C26/38°C
31°C27/36°C
29°C23/36°C
28°C24/33°C
28°C24/33°C
29°C25/35°C
31°C27/36°C
31°C26/36°C
32°C28/37°C
27°C24/30°C
28°C23/34°C
28°C24/34°C
25°C22/28°C
26°C24/30°C
28°C24/33°C
27°C24/32°C
25°C22/28°C
25°C23/27°C
28°C24/34°C
30°C26/35°C
28°C21/35°C
21°C20/22°C
19°C18/19°C
--°C/°C
59AQI
53AQI
63AQI
57AQI
2025 Days Vs Air Quality
Chenglingji, Rongjiawan, Hunan, China
10%
26
55%
145
26%
67
8%
21
1%
3
Total number of days with different AQI categories in last 263 days in 2025 (102 days remaining)
Under WHO’s Safe Air Quality Limits: 10%
Health Risk Level:
Extreme
In 2025, 10% of 263 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
Chenglingji, Rongjiawan, Hunan, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
167AQI
185AQI
196AQI
222AQI
159AQI
168AQI
146AQI
157AQI
131AQI
124AQI
137AQI
138AQI
149AQI
164AQI
115AQI
137AQI
133AQI
158AQI
158AQI
171AQI
163AQI
178AQI
229AQI
171AQI
108AQI
107AQI
101AQI
124AQI
172AQI
135AQI
174AQI
137AQI
135AQI
151AQI
137AQI
134AQI
113AQI
114AQI
81AQI
98AQI
124AQI
121AQI
144AQI
153AQI
159AQI
158AQI
136AQI
109AQI
100AQI
113AQI
137AQI
148AQI
89AQI
158AQI
141AQI
153AQI
142AQI
113AQI
129AQI
104AQI
84AQI
53AQI
96AQI
91AQI
121AQI
130AQI
115AQI
124AQI
116AQI
98AQI
132AQI
109AQI
95AQI
81AQI
94AQI
81AQI
87AQI
89AQI
91AQI
88AQI
94AQI
122AQI
103AQI
117AQI
131AQI
132AQI
89AQI
98AQI
85AQI
101AQI
97AQI
97AQI
101AQI
113AQI
119AQI
109AQI
116AQI
123AQI
111AQI
102AQI
91AQI
248AQI
127AQI
149AQI
101AQI
113AQI
109AQI
108AQI
114AQI
112AQI
84AQI
91AQI
80AQI
80AQI
92AQI
75AQI
84AQI
100AQI
97AQI
78AQI
88AQI
80AQI
91AQI
94AQI
79AQI
109AQI
111AQI
73AQI
88AQI
81AQI
78AQI
82AQI
82AQI
104AQI
88AQI
73AQI
82AQI
110AQI
88AQI
70AQI
70AQI
62AQI
85AQI
96AQI
94AQI
90AQI
102AQI
74AQI
73AQI
59AQI
57AQI
44AQI
63AQI
73AQI
91AQI
78AQI
85AQI
72AQI
65AQI
72AQI
86AQI
67AQI
64AQI
64AQI
61AQI
63AQI
61AQI
55AQI
52AQI
51AQI
51AQI
47AQI
39AQI
41AQI
45AQI
50AQI
48AQI
58AQI
46AQI
43AQI
48AQI
42AQI
41AQI
42AQI
51AQI
57AQI
67AQI
68AQI
66AQI
54AQI
57AQI
67AQI
62AQI
59AQI
61AQI
61AQI
60AQI
62AQI
58AQI
68AQI
63AQI
53AQI
43AQI
44AQI
49AQI
54AQI
58AQI
48AQI
57AQI
52AQI
57AQI
58AQI
63AQI
68AQI
66AQI
63AQI
60AQI
51AQI
51AQI
48AQI
57AQI
62AQI
53AQI
55AQI
55AQI
55AQI
45AQI
47AQI
52AQI
53AQI
47AQI
45AQI
47AQI
46AQI
50AQI
52AQI
52AQI
54AQI
56AQI
57AQI
59AQI
61AQI
57AQI
54AQI
57AQI
59AQI
76AQI
75AQI
67AQI
71AQI
66AQI
59AQI
59AQI
57AQI
53AQI
58AQI
58AQI
62AQI
63AQI
62AQI
62AQI
50AQI
154AQI
130AQI
102AQI
107AQI
84AQI
59AQI
56AQI
54AQI
61AQI
No. of days
202591AQI
Highest AQI recorded in
January154AQI
Lowest AQI recorded in
August54AQI
202494AQI
Highest AQI recorded in
December144AQI
Lowest AQI recorded in
July46AQI
202392AQI
Highest AQI recorded in
January146AQI
Lowest AQI recorded in
July58AQI
202297AQI
Highest AQI recorded in
January148AQI
Lowest AQI recorded in
July53AQI
202197AQI
Highest AQI recorded in
January136AQI
Lowest AQI recorded in
July65AQI
202093AQI
Highest AQI recorded in
December148AQI
Lowest AQI recorded in
June67AQI
Most & Least Polluted Years Over the Last 6 Years
Chenglingji's annual 2025 AQI (91) shows an average percentage change of -4.04% (improved AQI) compared to previous years: 2020 (93), 2021 (97), 2022 (97), 2023 (92), 2024 (94).