Seonggeoeup, Chonan, Chungnam, South Korea Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Seonggeoeup, Chonan, Chungnam, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (8th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 43 of Good air quality, showing improvement over 2024 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 8th Oct - 9th Oct 2025
Seonggeoeup, Chonan, Chungnam, South Korea
6 AM8th Oct 2025
6 PM
5 AM9th Oct 2025
AQI
AQI
54AQI
13AQI
In the last 24 hours,
Seonggeoeup's AQI reached its highest point of 54 at 1 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 8th Oct and 9th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Seonggeoeup, Chonan, Chungnam, South Korea
22°C18/25°C
23°C18/28°C
23°C18/29°C
21°C19/25°C
23°C20/27°C
23°C20/28°C
24°C20/29°C
24°C21/29°C
22°C19/25°C
20°C17/24°C
17°C15/19°C
17°C15/21°C
19°C15/25°C
19°C15/24°C
20°C16/24°C
21°C16/25°C
21°C18/22°C
20°C16/26°C
21°C16/27°C
19°C17/20°C
19°C15/23°C
18°C14/23°C
19°C14/24°C
20°C17/25°C
18°C16/19°C
20°C17/23°C
20°C19/22°C
19°C16/22°C
19°C17/21°C
--°C/°C
--°C/°C
51AQI
44AQI
46AQI
45AQI
2025 Days Vs Air Quality
Seonggeoeup, Chonan, Chungnam, South Korea
31%
87
61%
172
8%
22
Total number of days with different AQI categories in last 281 days in 2025 (84 days remaining)
Under WHO’s Safe Air Quality Limits: 31%
Health Risk Level:
High
In 2025, 31% of 281 days were within WHO’s safe air quality limits. The risk of health issues is High, with respiratory problems, heart disease, skin issues, and stress being more common, particularly among children and the elderly.
Annual Air Quality Insights
Seonggeoeup, Chonan, Chungnam, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
79AQI
74AQI
68AQI
67AQI
72AQI
102AQI
67AQI
76AQI
44AQI
66AQI
63AQI
92AQI
98AQI
104AQI
63AQI
79AQI
104AQI
94AQI
100AQI
130AQI
146AQI
148AQI
138AQI
140AQI
92AQI
66AQI
68AQI
46AQI
51AQI
46AQI
80AQI
87AQI
97AQI
62AQI
56AQI
53AQI
56AQI
53AQI
52AQI
61AQI
63AQI
91AQI
83AQI
58AQI
93AQI
63AQI
113AQI
55AQI
68AQI
52AQI
60AQI
59AQI
62AQI
60AQI
61AQI
57AQI
82AQI
64AQI
92AQI
114AQI
92AQI
60AQI
49AQI
43AQI
84AQI
99AQI
104AQI
113AQI
123AQI
116AQI
106AQI
104AQI
90AQI
67AQI
79AQI
69AQI
78AQI
90AQI
95AQI
103AQI
108AQI
111AQI
109AQI
129AQI
90AQI
91AQI
68AQI
56AQI
54AQI
62AQI
87AQI
89AQI
89AQI
91AQI
78AQI
71AQI
70AQI
78AQI
69AQI
79AQI
93AQI
68AQI
65AQI
50AQI
60AQI
61AQI
67AQI
83AQI
50AQI
67AQI
57AQI
46AQI
43AQI
60AQI
64AQI
55AQI
46AQI
62AQI
71AQI
63AQI
58AQI
51AQI
53AQI
49AQI
48AQI
50AQI
53AQI
66AQI
51AQI
51AQI
66AQI
69AQI
74AQI
76AQI
62AQI
45AQI
37AQI
60AQI
62AQI
47AQI
47AQI
55AQI
63AQI
49AQI
51AQI
63AQI
75AQI
79AQI
82AQI
73AQI
81AQI
90AQI
103AQI
74AQI
62AQI
60AQI
64AQI
72AQI
63AQI
64AQI
61AQI
53AQI
60AQI
72AQI
52AQI
59AQI
61AQI
63AQI
65AQI
65AQI
54AQI
51AQI
51AQI
56AQI
57AQI
49AQI
53AQI
63AQI
60AQI
54AQI
51AQI
46AQI
37AQI
47AQI
45AQI
46AQI
52AQI
62AQI
63AQI
56AQI
55AQI
57AQI
53AQI
63AQI
58AQI
43AQI
49AQI
37AQI
42AQI
32AQI
42AQI
40AQI
38AQI
48AQI
53AQI
55AQI
45AQI
42AQI
60AQI
62AQI
55AQI
57AQI
57AQI
62AQI
61AQI
50AQI
51AQI
46AQI
46AQI
56AQI
51AQI
54AQI
57AQI
45AQI
39AQI
39AQI
37AQI
36AQI
41AQI
51AQI
42AQI
45AQI
46AQI
46AQI
49AQI
50AQI
47AQI
43AQI
49AQI
52AQI
45AQI
43AQI
50AQI
38AQI
47AQI
49AQI
41AQI
36AQI
37AQI
40AQI
48AQI
51AQI
49AQI
48AQI
45AQI
37AQI
39AQI
49AQI
43AQI
37AQI
34AQI
37AQI
30AQI
27AQI
38AQI
38AQI
43AQI
44AQI
53AQI
65AQI
41AQI
44AQI
61AQI
75AQI
70AQI
64AQI
46AQI
45AQI
47AQI
35AQI
43AQI
86AQI
68AQI
89AQI
68AQI
60AQI
62AQI
50AQI
48AQI
43AQI
53AQI
No. of days
202563AQI
Highest AQI recorded in
March89AQI
Lowest AQI recorded in
September43AQI
202465AQI
Highest AQI recorded in
January89AQI
Lowest AQI recorded in
July38AQI
202373AQI
Highest AQI recorded in
February108AQI
Lowest AQI recorded in
September51AQI
202276AQI
Highest AQI recorded in
January105AQI
Lowest AQI recorded in
August17AQI
202177AQI
Highest AQI recorded in
March108AQI
Lowest AQI recorded in
September42AQI
202066AQI
Highest AQI recorded in
December99AQI
Lowest AQI recorded in
July41AQI
Most & Least Polluted Years Over the Last 6 Years
Seonggeoeup's annual 2025 AQI (63) shows an average percentage change of -10.6% (improved AQI) compared to previous years: 2020 (66), 2021 (77), 2022 (76), 2023 (73), 2024 (65).