Cheorwon DMZ , Dongducheon, Gyeonggi, South Korea 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
Cheorwon DMZ , Dongducheon, Gyeonggi, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (17th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 48 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Cheorwon DMZ , Dongducheon, Gyeonggi, South Korea
6 AM17th Sep 2025
6 PM
5 AM18th Sep 2025
50AQI
23AQI
48AQI
26AQI
In the last 24 hours,
Cheorwon DMZ 's AQI reached its highest point of 50 at 6 AM during the Day, while the lowest point, 23, was recorded at 5 PM during the Day between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Cheorwon DMZ , Dongducheon, Gyeonggi, South Korea
24°C20/30°C
25°C20/30°C
26°C21/30°C
25°C21/31°C
26°C23/30°C
25°C21/31°C
25°C20/31°C
23°C20/28°C
23°C17/30°C
24°C18/30°C
25°C23/28°C
24°C21/28°C
24°C20/29°C
22°C19/25°C
23°C18/28°C
24°C18/31°C
21°C18/25°C
23°C16/30°C
23°C19/29°C
23°C19/27°C
22°C18/27°C
21°C17/27°C
21°C14/28°C
21°C15/29°C
21°C17/26°C
20°C17/23°C
20°C15/26°C
22°C17/28°C
22°C18/26°C
19°C17/21°C
--°C/°C
48AQI
42AQI
48AQI
44AQI
2025 Days Vs Air Quality
Cheorwon DMZ , Dongducheon, Gyeonggi, South Korea
24%
63
71%
185
5%
12
Total number of days with different AQI categories in last 261 days in 2025 (104 days remaining)
Under WHO’s Safe Air Quality Limits: 24%
Health Risk Level:
Very high
In 2025, 24% of 261 days were within WHO’s safe air quality limits. The risk of health issues is Very high, including respiratory issues, heart disease, and stress, particularly affecting vulnerable groups.
Annual Air Quality Insights
Cheorwon DMZ , Dongducheon, Gyeonggi, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
68AQI
57AQI
59AQI
61AQI
70AQI
104AQI
62AQI
66AQI
46AQI
58AQI
63AQI
69AQI
86AQI
94AQI
62AQI
74AQI
73AQI
72AQI
83AQI
117AQI
131AQI
124AQI
100AQI
88AQI
62AQI
50AQI
67AQI
70AQI
68AQI
56AQI
64AQI
76AQI
65AQI
63AQI
56AQI
49AQI
55AQI
63AQI
53AQI
58AQI
58AQI
78AQI
77AQI
57AQI
89AQI
58AQI
113AQI
60AQI
69AQI
56AQI
60AQI
59AQI
63AQI
66AQI
61AQI
66AQI
76AQI
64AQI
82AQI
95AQI
82AQI
60AQI
50AQI
45AQI
66AQI
80AQI
80AQI
86AQI
104AQI
92AQI
94AQI
73AQI
74AQI
57AQI
80AQI
67AQI
69AQI
77AQI
95AQI
113AQI
121AQI
123AQI
128AQI
138AQI
95AQI
104AQI
71AQI
64AQI
58AQI
60AQI
81AQI
84AQI
74AQI
79AQI
57AQI
59AQI
77AQI
75AQI
79AQI
75AQI
84AQI
72AQI
61AQI
56AQI
57AQI
70AQI
72AQI
76AQI
54AQI
51AQI
54AQI
37AQI
32AQI
56AQI
66AQI
62AQI
62AQI
66AQI
66AQI
61AQI
54AQI
53AQI
48AQI
49AQI
46AQI
43AQI
53AQI
64AQI
61AQI
52AQI
73AQI
72AQI
76AQI
71AQI
58AQI
56AQI
39AQI
59AQI
61AQI
48AQI
46AQI
61AQI
62AQI
49AQI
53AQI
61AQI
71AQI
78AQI
70AQI
65AQI
56AQI
66AQI
77AQI
65AQI
57AQI
56AQI
61AQI
70AQI
59AQI
68AQI
58AQI
56AQI
57AQI
66AQI
64AQI
66AQI
64AQI
71AQI
67AQI
66AQI
54AQI
57AQI
61AQI
60AQI
56AQI
52AQI
52AQI
56AQI
56AQI
55AQI
51AQI
49AQI
47AQI
47AQI
52AQI
53AQI
57AQI
57AQI
57AQI
58AQI
55AQI
52AQI
50AQI
56AQI
50AQI
46AQI
52AQI
44AQI
42AQI
38AQI
40AQI
41AQI
36AQI
36AQI
43AQI
48AQI
52AQI
51AQI
54AQI
53AQI
55AQI
57AQI
57AQI
60AQI
59AQI
55AQI
52AQI
45AQI
48AQI
52AQI
53AQI
51AQI
53AQI
51AQI
41AQI
44AQI
52AQI
49AQI
44AQI
52AQI
47AQI
48AQI
48AQI
47AQI
49AQI
49AQI
48AQI
45AQI
46AQI
46AQI
42AQI
46AQI
46AQI
41AQI
47AQI
49AQI
40AQI
38AQI
39AQI
44AQI
47AQI
53AQI
48AQI
52AQI
52AQI
47AQI
48AQI
46AQI
48AQI
48AQI
75AQI
66AQI
84AQI
65AQI
58AQI
61AQI
49AQI
49AQI
46AQI
No. of days
202562AQI
Highest AQI recorded in
March84AQI
Lowest AQI recorded in
September46AQI
202460AQI
Highest AQI recorded in
January86AQI
Lowest AQI recorded in
September36AQI
202370AQI
Highest AQI recorded in
March91AQI
Lowest AQI recorded in
August38AQI
202262AQI
Highest AQI recorded in
February78AQI
Lowest AQI recorded in
August30AQI
202155AQI
Highest AQI recorded in
November77AQI
Lowest AQI recorded in
September36AQI
Most & Least Polluted Years Over the Last 5 Years
Cheorwon DMZ 's annual 2025 AQI (62) shows an average percentage change of 1.8% (worsened AQI) compared to previous years: 2021 (55), 2022 (62), 2023 (70), 2024 (60).