Seongseong Dong, 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
Seongseong Dong, Chonan, Chungnam, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (6th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 57 of Moderate air quality, showing improvement over 2024, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 7th Oct - 8th Oct 2025
Seongseong Dong, Chonan, Chungnam, South Korea
6 AM7th Oct 2025
6 PM
5 AM8th Oct 2025
AQI
AQI
45AQI
16AQI
In the last 24 hours,
Seongseong Dong's AQI reached its highest point of 45 at 10 PM during the Night, while the lowest point, undefined, was recorded at 7 PM during the Night between 7th Oct and 8th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Seongseong Dong, Chonan, Chungnam, South Korea
22°C17/27°C
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
--°C/°C
--°C/°C
45AQI
43AQI
46AQI
46AQI
2025 Days Vs Air Quality
Seongseong Dong, Chonan, Chungnam, South Korea
38%
107
58%
161
4%
11
Total number of days with different AQI categories in last 280 days in 2025 (85 days remaining)
Under WHO’s Safe Air Quality Limits: 38%
Health Risk Level:
High
In 2025, 38% of 280 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
Seongseong Dong, Chonan, Chungnam, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
67AQI
65AQI
58AQI
59AQI
62AQI
89AQI
56AQI
65AQI
39AQI
57AQI
58AQI
78AQI
79AQI
88AQI
57AQI
65AQI
80AQI
76AQI
78AQI
115AQI
135AQI
130AQI
119AQI
114AQI
80AQI
56AQI
62AQI
49AQI
55AQI
52AQI
74AQI
79AQI
85AQI
55AQI
49AQI
44AQI
50AQI
44AQI
39AQI
50AQI
53AQI
74AQI
68AQI
51AQI
76AQI
58AQI
101AQI
52AQI
57AQI
44AQI
50AQI
48AQI
51AQI
47AQI
49AQI
45AQI
72AQI
59AQI
81AQI
98AQI
82AQI
54AQI
46AQI
46AQI
76AQI
90AQI
89AQI
102AQI
111AQI
106AQI
96AQI
98AQI
87AQI
58AQI
77AQI
65AQI
75AQI
80AQI
84AQI
90AQI
99AQI
105AQI
99AQI
121AQI
85AQI
89AQI
66AQI
53AQI
51AQI
59AQI
75AQI
77AQI
82AQI
82AQI
73AQI
67AQI
67AQI
72AQI
63AQI
74AQI
83AQI
61AQI
61AQI
45AQI
58AQI
58AQI
64AQI
77AQI
49AQI
66AQI
53AQI
49AQI
42AQI
60AQI
61AQI
52AQI
42AQI
61AQI
66AQI
61AQI
56AQI
51AQI
52AQI
47AQI
49AQI
49AQI
52AQI
64AQI
47AQI
50AQI
65AQI
69AQI
71AQI
73AQI
60AQI
46AQI
37AQI
58AQI
60AQI
51AQI
50AQI
55AQI
58AQI
42AQI
42AQI
58AQI
68AQI
70AQI
74AQI
69AQI
73AQI
83AQI
97AQI
68AQI
54AQI
47AQI
53AQI
60AQI
56AQI
57AQI
52AQI
45AQI
50AQI
63AQI
45AQI
50AQI
54AQI
58AQI
62AQI
63AQI
52AQI
50AQI
48AQI
52AQI
54AQI
45AQI
51AQI
59AQI
58AQI
50AQI
48AQI
47AQI
43AQI
44AQI
45AQI
45AQI
48AQI
55AQI
58AQI
51AQI
49AQI
51AQI
50AQI
57AQI
56AQI
44AQI
50AQI
39AQI
42AQI
34AQI
41AQI
40AQI
37AQI
45AQI
53AQI
55AQI
46AQI
43AQI
54AQI
57AQI
55AQI
52AQI
57AQI
62AQI
60AQI
50AQI
51AQI
46AQI
47AQI
53AQI
53AQI
52AQI
55AQI
46AQI
39AQI
40AQI
37AQI
37AQI
39AQI
50AQI
43AQI
44AQI
46AQI
45AQI
48AQI
51AQI
49AQI
43AQI
49AQI
53AQI
46AQI
45AQI
48AQI
42AQI
47AQI
49AQI
42AQI
38AQI
38AQI
40AQI
49AQI
51AQI
49AQI
48AQI
45AQI
37AQI
42AQI
49AQI
44AQI
36AQI
36AQI
33AQI
29AQI
29AQI
28AQI
29AQI
30AQI
39AQI
64AQI
58AQI
44AQI
51AQI
61AQI
69AQI
66AQI
58AQI
41AQI
52AQI
57AQI
75AQI
58AQI
82AQI
63AQI
57AQI
56AQI
48AQI
48AQI
43AQI
57AQI
No. of days
202559AQI
Highest AQI recorded in
March82AQI
Lowest AQI recorded in
September43AQI
202465AQI
Highest AQI recorded in
April72AQI
Lowest AQI recorded in
September54AQI
202370AQI
Highest AQI recorded in
March91AQI
Lowest AQI recorded in
November51AQI
202275AQI
Highest AQI recorded in
February97AQI
Lowest AQI recorded in
August42AQI
202181AQI
Highest AQI recorded in
March118AQI
Lowest AQI recorded in
September49AQI
202078AQI
Highest AQI recorded in
December96AQI
Lowest AQI recorded in
August61AQI
Most & Least Polluted Years Over the Last 6 Years
Seongseong Dong's annual 2025 AQI (59) shows an average percentage change of -19.5% (improved AQI) compared to previous years: 2020 (78), 2021 (81), 2022 (75), 2023 (70), 2024 (65).