Daejeong Eup, Seogwipo, Jeju, 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
Daejeong Eup, Seogwipo, Jeju, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (19th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 33 of Good air quality, showing improvement over 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 20th Sep - 21st Sep 2025
Daejeong Eup, Seogwipo, Jeju, South Korea
6 AM20th Sep 2025
6 PM
5 AM21st Sep 2025
AQI
AQI
36AQI
18AQI
In the last 24 hours,
Daejeong Eup's AQI reached its highest point of 36 at 2 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 20th Sep and 21st Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Daejeong Eup, Seogwipo, Jeju, South Korea
29°C27/30°C
29°C28/30°C
29°C28/30°C
29°C28/30°C
29°C28/30°C
28°C27/30°C
29°C27/30°C
29°C28/30°C
29°C27/30°C
29°C27/30°C
29°C27/30°C
28°C27/30°C
28°C27/30°C
29°C27/30°C
29°C27/30°C
29°C28/30°C
29°C28/30°C
29°C28/30°C
28°C26/28°C
27°C26/28°C
27°C26/29°C
28°C27/30°C
28°C27/29°C
28°C27/29°C
28°C27/30°C
29°C28/30°C
29°C27/30°C
26°C25/27°C
27°C25/28°C
--°C/°C
--°C/°C
41AQI
30AQI
42AQI
37AQI
2025 Days Vs Air Quality
Daejeong Eup, Seogwipo, Jeju, South Korea
47%
123
53%
138
0.3%
1
Total number of days with different AQI categories in last 263 days in 2025 (102 days remaining)
Under WHO’s Safe Air Quality Limits: 47%
Health Risk Level:
Significant
In 2025, 47% of 263 days were within WHO’s safe air quality limits, and 53% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Daejeong Eup, Seogwipo, Jeju, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
50AQI
68AQI
47AQI
51AQI
55AQI
79AQI
48AQI
70AQI
41AQI
48AQI
40AQI
60AQI
51AQI
80AQI
49AQI
63AQI
50AQI
54AQI
46AQI
104AQI
71AQI
77AQI
73AQI
76AQI
63AQI
57AQI
61AQI
54AQI
53AQI
47AQI
50AQI
42AQI
61AQI
57AQI
58AQI
60AQI
50AQI
57AQI
41AQI
41AQI
44AQI
53AQI
53AQI
54AQI
54AQI
51AQI
85AQI
60AQI
61AQI
53AQI
52AQI
48AQI
64AQI
55AQI
53AQI
47AQI
94AQI
80AQI
64AQI
66AQI
42AQI
43AQI
39AQI
38AQI
55AQI
57AQI
58AQI
74AQI
64AQI
74AQI
65AQI
66AQI
58AQI
47AQI
72AQI
58AQI
70AQI
61AQI
68AQI
92AQI
88AQI
84AQI
84AQI
89AQI
69AQI
70AQI
63AQI
54AQI
47AQI
58AQI
64AQI
63AQI
68AQI
64AQI
63AQI
64AQI
63AQI
74AQI
66AQI
74AQI
71AQI
63AQI
64AQI
61AQI
51AQI
60AQI
62AQI
51AQI
41AQI
39AQI
45AQI
38AQI
52AQI
53AQI
50AQI
45AQI
42AQI
49AQI
58AQI
56AQI
51AQI
49AQI
58AQI
44AQI
49AQI
49AQI
54AQI
54AQI
41AQI
50AQI
61AQI
64AQI
64AQI
61AQI
48AQI
40AQI
41AQI
56AQI
55AQI
35AQI
31AQI
39AQI
46AQI
53AQI
50AQI
56AQI
57AQI
64AQI
64AQI
66AQI
63AQI
61AQI
46AQI
58AQI
66AQI
55AQI
51AQI
54AQI
54AQI
58AQI
57AQI
53AQI
50AQI
41AQI
43AQI
40AQI
44AQI
51AQI
53AQI
48AQI
46AQI
47AQI
46AQI
45AQI
43AQI
49AQI
52AQI
50AQI
45AQI
44AQI
44AQI
48AQI
53AQI
55AQI
50AQI
48AQI
47AQI
45AQI
48AQI
56AQI
60AQI
56AQI
52AQI
51AQI
55AQI
53AQI
54AQI
53AQI
47AQI
47AQI
48AQI
44AQI
46AQI
53AQI
53AQI
48AQI
46AQI
45AQI
43AQI
44AQI
46AQI
47AQI
53AQI
51AQI
48AQI
51AQI
50AQI
53AQI
57AQI
53AQI
56AQI
54AQI
48AQI
46AQI
43AQI
40AQI
40AQI
37AQI
42AQI
47AQI
47AQI
45AQI
45AQI
49AQI
44AQI
35AQI
33AQI
36AQI
42AQI
42AQI
40AQI
42AQI
36AQI
34AQI
38AQI
38AQI
42AQI
42AQI
36AQI
41AQI
35AQI
32AQI
39AQI
40AQI
40AQI
40AQI
33AQI
39AQI
31AQI
33AQI
37AQI
33AQI
59AQI
57AQI
64AQI
57AQI
52AQI
50AQI
50AQI
45AQI
37AQI
No. of days
202553AQI
Highest AQI recorded in
March64AQI
Lowest AQI recorded in
September37AQI
202447AQI
Highest AQI recorded in
April61AQI
Lowest AQI recorded in
July28AQI
202354AQI
Highest AQI recorded in
March78AQI
Lowest AQI recorded in
July39AQI
202254AQI
Highest AQI recorded in
February63AQI
Lowest AQI recorded in
August37AQI
202156AQI
Highest AQI recorded in
March94AQI
Lowest AQI recorded in
July39AQI
202055AQI
Highest AQI recorded in
May68AQI
Lowest AQI recorded in
July39AQI
Most & Least Polluted Years Over the Last 6 Years
Daejeong Eup's annual 2025 AQI (53) shows an average percentage change of -0.2% (improved AQI) compared to previous years: 2020 (55), 2021 (56), 2022 (54), 2023 (54), 2024 (47).