Dandong, Liaoning, 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
Dandong, Liaoning, China
AQI Trends: Highest and Lowest
Same Day Analysis (17th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 49 of Good air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Dandong, Liaoning, China
5 AM17th Sep 2025
6 PM
4 AM18th Sep 2025
63AQI
18AQI
62AQI
25AQI
In the last 24 hours,
Dandong's AQI reached its highest point of 63 at 6 AM during the Day, while the lowest point, 18, was recorded at 12 PM during the Day between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Dandong, Liaoning, China
24°C22/28°C
23°C22/27°C
25°C22/29°C
25°C24/28°C
26°C24/30°C
26°C23/28°C
24°C21/26°C
23°C18/28°C
22°C18/27°C
22°C20/25°C
23°C19/28°C
22°C21/25°C
20°C19/21°C
22°C18/28°C
23°C18/29°C
23°C19/27°C
24°C19/29°C
23°C20/28°C
22°C19/25°C
21°C17/26°C
21°C17/25°C
20°C15/26°C
21°C15/26°C
22°C18/27°C
22°C18/27°C
22°C18/28°C
21°C18/25°C
22°C18/27°C
20°C16/23°C
16°C12/21°C
--°C/°C
58AQI
52AQI
63AQI
56AQI
2025 Days Vs Air Quality
Dandong, Liaoning, China
9%
24
73%
189
18%
46
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: 9%
Health Risk Level:
Extreme
In 2025, 9% 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
Dandong, Liaoning, China
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
98AQI
75AQI
108AQI
105AQI
148AQI
103AQI
125AQI
72AQI
81AQI
79AQI
111AQI
124AQI
140AQI
100AQI
92AQI
93AQI
102AQI
100AQI
135AQI
131AQI
151AQI
98AQI
132AQI
110AQI
114AQI
109AQI
134AQI
87AQI
121AQI
113AQI
118AQI
113AQI
118AQI
73AQI
75AQI
65AQI
84AQI
54AQI
68AQI
67AQI
95AQI
103AQI
94AQI
131AQI
141AQI
146AQI
104AQI
78AQI
65AQI
61AQI
63AQI
63AQI
65AQI
64AQI
87AQI
95AQI
84AQI
130AQI
123AQI
131AQI
99AQI
74AQI
90AQI
88AQI
94AQI
113AQI
108AQI
131AQI
144AQI
119AQI
92AQI
82AQI
69AQI
79AQI
78AQI
103AQI
93AQI
116AQI
122AQI
136AQI
140AQI
149AQI
122AQI
129AQI
121AQI
94AQI
74AQI
65AQI
64AQI
84AQI
86AQI
97AQI
104AQI
103AQI
72AQI
94AQI
93AQI
97AQI
101AQI
90AQI
86AQI
67AQI
58AQI
51AQI
75AQI
76AQI
91AQI
70AQI
67AQI
63AQI
66AQI
49AQI
69AQI
81AQI
72AQI
78AQI
88AQI
87AQI
91AQI
76AQI
64AQI
64AQI
56AQI
53AQI
67AQI
57AQI
70AQI
60AQI
66AQI
63AQI
78AQI
82AQI
82AQI
71AQI
67AQI
63AQI
54AQI
64AQI
66AQI
77AQI
60AQI
99AQI
77AQI
82AQI
72AQI
84AQI
83AQI
87AQI
86AQI
89AQI
98AQI
99AQI
95AQI
67AQI
64AQI
60AQI
69AQI
62AQI
60AQI
60AQI
49AQI
54AQI
59AQI
59AQI
56AQI
57AQI
56AQI
58AQI
60AQI
61AQI
60AQI
55AQI
53AQI
57AQI
59AQI
58AQI
57AQI
60AQI
60AQI
59AQI
52AQI
51AQI
49AQI
44AQI
49AQI
52AQI
50AQI
54AQI
59AQI
62AQI
61AQI
62AQI
63AQI
63AQI
58AQI
56AQI
55AQI
54AQI
54AQI
52AQI
47AQI
48AQI
43AQI
43AQI
48AQI
58AQI
58AQI
60AQI
64AQI
58AQI
57AQI
59AQI
60AQI
60AQI
59AQI
49AQI
55AQI
50AQI
48AQI
49AQI
56AQI
48AQI
55AQI
59AQI
55AQI
57AQI
59AQI
50AQI
50AQI
55AQI
52AQI
45AQI
51AQI
50AQI
56AQI
53AQI
49AQI
48AQI
51AQI
50AQI
55AQI
57AQI
54AQI
59AQI
68AQI
72AQI
72AQI
69AQI
59AQI
61AQI
60AQI
68AQI
64AQI
70AQI
67AQI
68AQI
64AQI
61AQI
57AQI
49AQI
110AQI
90AQI
103AQI
80AQI
72AQI
61AQI
55AQI
53AQI
64AQI
No. of days
202577AQI
Highest AQI recorded in
January110AQI
Lowest AQI recorded in
August53AQI
202471AQI
Highest AQI recorded in
January101AQI
Lowest AQI recorded in
September43AQI
202376AQI
Highest AQI recorded in
March109AQI
Lowest AQI recorded in
August43AQI
202273AQI
Highest AQI recorded in
February98AQI
Lowest AQI recorded in
August37AQI
202177AQI
Highest AQI recorded in
March113AQI
Lowest AQI recorded in
September46AQI
202072AQI
Highest AQI recorded in
December108AQI
Lowest AQI recorded in
August45AQI
Most & Least Polluted Years Over the Last 6 Years
Dandong's annual 2025 AQI (77) shows an average percentage change of 4.6% (worsened AQI) compared to previous years: 2020 (72), 2021 (77), 2022 (73), 2023 (76), 2024 (71).