Daesan Ri, Sosan, Chungnam, 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
Daesan Ri, Sosan, Chungnam, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (29th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 41 of Good air quality, showing improvement over 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 29th Sep - 30th Sep 2025
Daesan Ri, Sosan, Chungnam, South Korea
6 AM29th Sep 2025
6 PM
5 AM30th Sep 2025
AQI
AQI
50AQI
26AQI
In the last 24 hours,
Daesan Ri's AQI reached its highest point of 50 at 6 AM during the Night, while the lowest point, 26, was recorded at 3 PM during the Night between 29th Sep and 30th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Daesan Ri, Sosan, Chungnam, South Korea
27°C25/29°C
26°C25/27°C
25°C24/26°C
25°C23/28°C
24°C23/25°C
26°C24/28°C
27°C25/29°C
25°C24/26°C
24°C23/25°C
24°C22/25°C
24°C22/26°C
25°C22/28°C
23°C21/24°C
24°C21/26°C
24°C23/25°C
24°C23/27°C
25°C24/27°C
23°C22/25°C
22°C21/24°C
19°C18/20°C
20°C18/23°C
21°C19/23°C
21°C20/24°C
22°C20/24°C
22°C20/23°C
22°C21/23°C
22°C21/23°C
22°C20/25°C
21°C19/21°C
--°C/°C
--°C/°C
47AQI
44AQI
48AQI
45AQI
2025 Days Vs Air Quality
Daesan Ri, Sosan, Chungnam, South Korea
28%
75
69%
187
4%
10
Total number of days with different AQI categories in last 272 days in 2025 (93 days remaining)
Under WHO’s Safe Air Quality Limits: 28%
Health Risk Level:
Very high
In 2025, 28% of 272 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
Daesan Ri, Sosan, Chungnam, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
66AQI
53AQI
57AQI
54AQI
55AQI
74AQI
50AQI
56AQI
40AQI
48AQI
47AQI
68AQI
76AQI
97AQI
52AQI
67AQI
59AQI
64AQI
64AQI
124AQI
110AQI
131AQI
90AQI
116AQI
71AQI
59AQI
59AQI
53AQI
53AQI
50AQI
68AQI
80AQI
85AQI
58AQI
52AQI
46AQI
51AQI
47AQI
39AQI
41AQI
51AQI
63AQI
61AQI
49AQI
74AQI
58AQI
102AQI
49AQI
56AQI
43AQI
53AQI
50AQI
55AQI
52AQI
51AQI
50AQI
60AQI
56AQI
68AQI
87AQI
83AQI
55AQI
49AQI
38AQI
77AQI
76AQI
76AQI
99AQI
102AQI
87AQI
91AQI
78AQI
73AQI
59AQI
68AQI
64AQI
78AQI
75AQI
88AQI
83AQI
102AQI
103AQI
101AQI
111AQI
89AQI
86AQI
57AQI
50AQI
48AQI
61AQI
63AQI
70AQI
83AQI
75AQI
67AQI
62AQI
66AQI
67AQI
63AQI
71AQI
72AQI
60AQI
60AQI
41AQI
58AQI
61AQI
62AQI
68AQI
42AQI
64AQI
53AQI
49AQI
40AQI
63AQI
53AQI
49AQI
40AQI
58AQI
64AQI
59AQI
57AQI
49AQI
52AQI
44AQI
55AQI
45AQI
53AQI
57AQI
50AQI
59AQI
68AQI
68AQI
73AQI
68AQI
59AQI
48AQI
42AQI
56AQI
57AQI
38AQI
44AQI
48AQI
61AQI
56AQI
51AQI
64AQI
66AQI
70AQI
76AQI
81AQI
81AQI
77AQI
83AQI
67AQI
56AQI
55AQI
57AQI
60AQI
54AQI
57AQI
52AQI
55AQI
61AQI
61AQI
60AQI
50AQI
54AQI
57AQI
59AQI
58AQI
49AQI
54AQI
55AQI
59AQI
59AQI
52AQI
53AQI
61AQI
56AQI
50AQI
48AQI
46AQI
50AQI
52AQI
51AQI
49AQI
49AQI
53AQI
63AQI
56AQI
55AQI
56AQI
55AQI
59AQI
58AQI
48AQI
53AQI
46AQI
48AQI
41AQI
46AQI
44AQI
44AQI
49AQI
53AQI
66AQI
63AQI
56AQI
60AQI
65AQI
68AQI
59AQI
58AQI
63AQI
62AQI
57AQI
58AQI
55AQI
49AQI
52AQI
52AQI
53AQI
57AQI
54AQI
50AQI
49AQI
48AQI
46AQI
48AQI
55AQI
51AQI
50AQI
52AQI
55AQI
53AQI
58AQI
57AQI
52AQI
53AQI
53AQI
52AQI
52AQI
54AQI
48AQI
54AQI
55AQI
52AQI
47AQI
48AQI
47AQI
52AQI
57AQI
56AQI
56AQI
50AQI
48AQI
50AQI
51AQI
41AQI
46AQI
45AQI
37AQI
35AQI
35AQI
32AQI
35AQI
32AQI
47AQI
55AQI
55AQI
48AQI
41AQI
69AQI
57AQI
77AQI
60AQI
58AQI
58AQI
54AQI
53AQI
47AQI
No. of days
202559AQI
Highest AQI recorded in
March77AQI
Lowest AQI recorded in
September47AQI
202458AQI
Highest AQI recorded in
January72AQI
Lowest AQI recorded in
July37AQI
202362AQI
Highest AQI recorded in
February87AQI
Lowest AQI recorded in
September45AQI
202259AQI
Highest AQI recorded in
February82AQI
Lowest AQI recorded in
August28AQI
202164AQI
Highest AQI recorded in
March99AQI
Lowest AQI recorded in
September39AQI
202059AQI
Highest AQI recorded in
April71AQI
Lowest AQI recorded in
August48AQI
Most & Least Polluted Years Over the Last 6 Years
Daesan Ri's annual 2025 AQI (59) shows an average percentage change of -1.6% (improved AQI) compared to previous years: 2020 (59), 2021 (64), 2022 (59), 2023 (62), 2024 (58).