Seongdong myeon, Hosan, 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
Seongdong myeon, Hosan, Chungnam, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (3rd October ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 1st highest AQI at 89 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025
Seongdong myeon, Hosan, Chungnam, South Korea
6 AM3rd Oct 2025
6 PM
5 AM4th Oct 2025
AQI
AQI
58AQI
32AQI
In the last 24 hours,
Seongdong myeon's AQI reached its highest point of 58 at 6 AM during the Night, while the lowest point, 32, was recorded at 3 AM during the Night between 3rd Oct and 4th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Seongdong myeon, Hosan, Chungnam, South Korea
23°C22/25°C
26°C22/32°C
26°C23/31°C
25°C21/29°C
22°C19/28°C
20°C19/22°C
23°C19/28°C
23°C18/29°C
22°C21/25°C
24°C21/28°C
24°C21/28°C
24°C20/29°C
24°C21/30°C
23°C20/26°C
21°C18/25°C
19°C18/22°C
19°C17/24°C
20°C16/26°C
20°C17/26°C
20°C18/25°C
22°C17/28°C
22°C21/23°C
22°C17/27°C
22°C18/26°C
20°C18/21°C
20°C16/24°C
18°C15/23°C
19°C15/25°C
20°C17/25°C
--°C/°C
--°C/°C
43AQI
38AQI
46AQI
38AQI
2025 Days Vs Air Quality
Seongdong myeon, Hosan, Chungnam, South Korea
38%
106
58%
159
4%
11
Total number of days with different AQI categories in last 276 days in 2025 (89 days remaining)
Under WHO’s Safe Air Quality Limits: 38%
Health Risk Level:
High
In 2025, 38% of 276 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
Seongdong myeon, Hosan, Chungnam, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
73AQI
62AQI
59AQI
64AQI
66AQI
71AQI
62AQI
65AQI
46AQI
62AQI
69AQI
78AQI
91AQI
91AQI
64AQI
68AQI
87AQI
88AQI
95AQI
119AQI
139AQI
147AQI
118AQI
119AQI
73AQI
61AQI
58AQI
46AQI
51AQI
64AQI
82AQI
86AQI
94AQI
57AQI
49AQI
54AQI
48AQI
47AQI
44AQI
50AQI
63AQI
68AQI
62AQI
50AQI
71AQI
55AQI
105AQI
49AQI
57AQI
48AQI
51AQI
52AQI
59AQI
50AQI
51AQI
55AQI
67AQI
66AQI
69AQI
93AQI
70AQI
51AQI
44AQI
37AQI
63AQI
76AQI
77AQI
88AQI
87AQI
94AQI
91AQI
80AQI
76AQI
46AQI
65AQI
64AQI
70AQI
84AQI
100AQI
107AQI
115AQI
122AQI
113AQI
121AQI
89AQI
77AQI
57AQI
50AQI
54AQI
66AQI
75AQI
88AQI
84AQI
81AQI
69AQI
65AQI
68AQI
70AQI
67AQI
74AQI
84AQI
58AQI
58AQI
41AQI
55AQI
60AQI
66AQI
78AQI
46AQI
66AQI
45AQI
39AQI
40AQI
58AQI
60AQI
49AQI
41AQI
56AQI
65AQI
61AQI
54AQI
49AQI
49AQI
48AQI
49AQI
47AQI
49AQI
61AQI
42AQI
53AQI
65AQI
68AQI
71AQI
74AQI
53AQI
46AQI
48AQI
58AQI
57AQI
41AQI
45AQI
46AQI
57AQI
48AQI
46AQI
62AQI
74AQI
76AQI
77AQI
80AQI
84AQI
83AQI
93AQI
76AQI
62AQI
57AQI
61AQI
66AQI
61AQI
61AQI
56AQI
55AQI
57AQI
67AQI
46AQI
60AQI
59AQI
61AQI
63AQI
63AQI
51AQI
49AQI
43AQI
50AQI
51AQI
43AQI
54AQI
59AQI
59AQI
49AQI
48AQI
45AQI
46AQI
52AQI
51AQI
47AQI
49AQI
56AQI
61AQI
52AQI
51AQI
54AQI
53AQI
60AQI
56AQI
47AQI
54AQI
45AQI
46AQI
39AQI
43AQI
41AQI
37AQI
48AQI
54AQI
58AQI
49AQI
42AQI
55AQI
60AQI
56AQI
55AQI
55AQI
61AQI
61AQI
52AQI
50AQI
51AQI
50AQI
51AQI
55AQI
51AQI
54AQI
45AQI
39AQI
40AQI
38AQI
39AQI
42AQI
50AQI
49AQI
47AQI
48AQI
47AQI
48AQI
52AQI
46AQI
41AQI
49AQI
52AQI
45AQI
42AQI
46AQI
39AQI
44AQI
49AQI
42AQI
43AQI
39AQI
38AQI
47AQI
45AQI
46AQI
44AQI
41AQI
36AQI
40AQI
44AQI
44AQI
36AQI
37AQI
34AQI
30AQI
31AQI
28AQI
28AQI
33AQI
23AQI
37AQI
61AQI
34AQI
41AQI
45AQI
58AQI
90AQI
89AQI
79AQI
60AQI
78AQI
62AQI
57AQI
59AQI
50AQI
48AQI
39AQI
79AQI
No. of days
202560AQI
Highest AQI recorded in
October79AQI
Lowest AQI recorded in
September39AQI
202458AQI
Highest AQI recorded in
January83AQI
Lowest AQI recorded in
July33AQI
202369AQI
Highest AQI recorded in
February100AQI
Lowest AQI recorded in
July45AQI
202274AQI
Highest AQI recorded in
November88AQI
Lowest AQI recorded in
September55AQI
Most & Least Polluted Years Over the Last 4 Years
Seongdong myeon's annual 2025 AQI (60) shows an average percentage change of -10.09% (improved AQI) compared to previous years: 2022 (74), 2023 (69), 2024 (58).