Changsha, Changsha, 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
Changsha, Changsha, Hunan, China
AQI Trends: Highest and Lowest
Same Day Analysis (6th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 51 of Moderate air quality, showing improvement over 2024, 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 7th Aug - 8th Aug 2025
Changsha, Changsha, Hunan, China
5 AM7th Aug 2025
7 PM
4 AM8th Aug 2025
57AQI
34AQI
58AQI
49AQI
In the last 24 hours,
Changsha's AQI reached its highest point of 58 at 2 AM during the Night, while the lowest point, 34, was recorded at 11 AM during the Day between 7th Aug and 8th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Changsha, Changsha, Hunan, China
30°C26/36°C
30°C26/36°C
30°C25/35°C
29°C25/33°C
29°C25/33°C
30°C25/36°C
31°C27/37°C
32°C28/38°C
31°C29/35°C
32°C28/38°C
31°C27/38°C
29°C26/33°C
29°C26/34°C
27°C25/30°C
27°C25/31°C
30°C25/36°C
30°C26/37°C
31°C27/37°C
30°C26/34°C
29°C26/35°C
29°C25/34°C
29°C26/35°C
30°C25/36°C
30°C26/36°C
31°C26/37°C
32°C28/38°C
33°C28/39°C
32°C28/38°C
30°C26/35°C
28°C25/32°C
--°C/°C
58AQI
52AQI
59AQI
59AQI
2025 Days Vs Air Quality
Changsha, Changsha, Hunan, China
9%
19
52%
113
30%
66
8%
17
0.9%
2
0.4%
1
Total number of days with different AQI categories in last 220 days in 2025 (145 days remaining)
Under WHO’s Safe Air Quality Limits: 9%
Health Risk Level:
Extreme
In 2025, 9% of 220 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
Changsha, Changsha, Hunan, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
172AQI
179AQI
192AQI
222AQI
147AQI
165AQI
159AQI
143AQI
143AQI
122AQI
137AQI
133AQI
136AQI
145AQI
127AQI
123AQI
126AQI
140AQI
154AQI
164AQI
159AQI
162AQI
241AQI
178AQI
110AQI
95AQI
114AQI
115AQI
160AQI
136AQI
126AQI
112AQI
110AQI
116AQI
103AQI
124AQI
103AQI
118AQI
70AQI
90AQI
95AQI
130AQI
137AQI
156AQI
152AQI
159AQI
148AQI
119AQI
110AQI
107AQI
107AQI
150AQI
77AQI
151AQI
132AQI
156AQI
147AQI
132AQI
120AQI
92AQI
87AQI
48AQI
87AQI
79AQI
115AQI
94AQI
96AQI
120AQI
103AQI
102AQI
129AQI
122AQI
74AQI
87AQI
77AQI
79AQI
82AQI
78AQI
83AQI
94AQI
95AQI
129AQI
105AQI
135AQI
138AQI
140AQI
87AQI
103AQI
74AQI
98AQI
91AQI
101AQI
101AQI
121AQI
124AQI
124AQI
137AQI
137AQI
134AQI
118AQI
115AQI
408AQI
144AQI
160AQI
114AQI
126AQI
120AQI
121AQI
82AQI
107AQI
68AQI
91AQI
85AQI
70AQI
77AQI
71AQI
78AQI
89AQI
100AQI
87AQI
91AQI
87AQI
98AQI
103AQI
81AQI
97AQI
97AQI
78AQI
80AQI
82AQI
81AQI
89AQI
86AQI
98AQI
97AQI
77AQI
82AQI
90AQI
78AQI
59AQI
61AQI
59AQI
72AQI
92AQI
100AQI
91AQI
112AQI
70AQI
69AQI
60AQI
59AQI
44AQI
61AQI
72AQI
83AQI
79AQI
80AQI
64AQI
75AQI
68AQI
75AQI
56AQI
56AQI
66AQI
52AQI
56AQI
56AQI
47AQI
47AQI
45AQI
49AQI
46AQI
26AQI
32AQI
42AQI
51AQI
57AQI
49AQI
47AQI
49AQI
49AQI
42AQI
38AQI
51AQI
55AQI
65AQI
66AQI
72AQI
74AQI
66AQI
57AQI
65AQI
61AQI
59AQI
61AQI
61AQI
61AQI
62AQI
64AQI
63AQI
57AQI
43AQI
46AQI
42AQI
51AQI
52AQI
56AQI
52AQI
55AQI
57AQI
54AQI
60AQI
64AQI
69AQI
63AQI
61AQI
60AQI
51AQI
149AQI
123AQI
98AQI
117AQI
83AQI
56AQI
57AQI
61AQI
No. of days
202596AQI
Highest AQI recorded in
January149AQI
Lowest AQI recorded in
June56AQI
2024101AQI
Highest AQI recorded in
December143AQI
Lowest AQI recorded in
July53AQI
2023101AQI
Highest AQI recorded in
January155AQI
Lowest AQI recorded in
July60AQI
2022103AQI
Highest AQI recorded in
January148AQI
Lowest AQI recorded in
July42AQI
2021109AQI
Highest AQI recorded in
January152AQI
Lowest AQI recorded in
July70AQI
2020100AQI
Highest AQI recorded in
December164AQI
Lowest AQI recorded in
June62AQI
Most & Least Polluted Years Over the Last 6 Years
Changsha's annual 2025 AQI (96) shows an average percentage change of -6.2% (improved AQI) compared to previous years: 2020 (100), 2021 (109), 2022 (103), 2023 (101), 2024 (101).