Simwon Myeon, Jeonghae, Jeonbuk, 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
Simwon Myeon, Jeonghae, Jeonbuk, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (16th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 39 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Simwon Myeon, Jeonghae, Jeonbuk, South Korea
6 AM17th Sep 2025
7 PM
5 AM18th Sep 2025
AQI
AQI
44AQI
17AQI
In the last 24 hours,
Simwon Myeon's AQI reached its highest point of 44 at 6 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Simwon Myeon, Jeonghae, Jeonbuk, South Korea
27°C25/29°C
27°C25/29°C
27°C25/29°C
27°C26/29°C
27°C25/29°C
27°C25/30°C
27°C25/30°C
27°C26/29°C
26°C25/28°C
26°C24/28°C
27°C25/29°C
27°C25/29°C
27°C25/29°C
27°C25/29°C
25°C24/27°C
26°C23/29°C
26°C24/28°C
27°C25/29°C
27°C25/29°C
26°C25/27°C
25°C24/27°C
22°C19/24°C
24°C21/27°C
25°C22/28°C
24°C22/26°C
25°C24/26°C
25°C23/26°C
25°C23/26°C
25°C24/27°C
--°C/°C
--°C/°C
46AQI
40AQI
46AQI
42AQI
2025 Days Vs Air Quality
Simwon Myeon, Jeonghae, Jeonbuk, South Korea
43%
112
55%
143
2%
4
Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)
Under WHO’s Safe Air Quality Limits: 43%
Health Risk Level:
Significant
In 2025, 43% of 260 days were within WHO’s safe air quality limits, and 57% exceeded them. The risk of health issues is Significant, especially for those with existing respiratory or heart conditions.
Annual Air Quality Insights
Simwon Myeon, Jeonghae, Jeonbuk, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
55AQI
51AQI
47AQI
50AQI
55AQI
72AQI
41AQI
49AQI
35AQI
44AQI
47AQI
62AQI
66AQI
94AQI
48AQI
61AQI
57AQI
72AQI
61AQI
85AQI
102AQI
83AQI
82AQI
75AQI
69AQI
47AQI
63AQI
39AQI
44AQI
46AQI
44AQI
65AQI
81AQI
48AQI
47AQI
39AQI
41AQI
38AQI
36AQI
38AQI
47AQI
55AQI
51AQI
44AQI
58AQI
50AQI
92AQI
50AQI
51AQI
41AQI
44AQI
40AQI
47AQI
43AQI
42AQI
42AQI
69AQI
53AQI
57AQI
65AQI
62AQI
46AQI
42AQI
34AQI
65AQI
69AQI
67AQI
87AQI
78AQI
87AQI
75AQI
73AQI
73AQI
57AQI
64AQI
62AQI
78AQI
78AQI
79AQI
93AQI
100AQI
106AQI
103AQI
124AQI
86AQI
84AQI
59AQI
45AQI
43AQI
56AQI
69AQI
70AQI
81AQI
77AQI
65AQI
68AQI
65AQI
78AQI
66AQI
76AQI
76AQI
60AQI
60AQI
45AQI
57AQI
60AQI
65AQI
66AQI
46AQI
63AQI
58AQI
38AQI
57AQI
57AQI
52AQI
44AQI
39AQI
49AQI
61AQI
55AQI
55AQI
46AQI
49AQI
45AQI
45AQI
49AQI
49AQI
53AQI
39AQI
52AQI
63AQI
66AQI
70AQI
65AQI
48AQI
39AQI
45AQI
57AQI
55AQI
37AQI
39AQI
40AQI
55AQI
55AQI
51AQI
62AQI
60AQI
72AQI
76AQI
72AQI
75AQI
83AQI
84AQI
70AQI
65AQI
54AQI
57AQI
65AQI
60AQI
58AQI
53AQI
57AQI
60AQI
59AQI
57AQI
56AQI
60AQI
59AQI
66AQI
55AQI
43AQI
41AQI
36AQI
51AQI
52AQI
49AQI
69AQI
61AQI
53AQI
42AQI
42AQI
44AQI
53AQI
55AQI
52AQI
47AQI
47AQI
50AQI
62AQI
62AQI
57AQI
57AQI
52AQI
60AQI
55AQI
46AQI
56AQI
47AQI
44AQI
38AQI
45AQI
40AQI
39AQI
47AQI
58AQI
69AQI
59AQI
53AQI
53AQI
56AQI
59AQI
58AQI
56AQI
60AQI
57AQI
54AQI
51AQI
53AQI
49AQI
47AQI
51AQI
50AQI
52AQI
47AQI
40AQI
37AQI
38AQI
37AQI
41AQI
49AQI
49AQI
50AQI
48AQI
47AQI
49AQI
47AQI
42AQI
42AQI
47AQI
49AQI
41AQI
42AQI
44AQI
37AQI
44AQI
47AQI
43AQI
40AQI
36AQI
40AQI
44AQI
39AQI
45AQI
43AQI
41AQI
38AQI
39AQI
38AQI
39AQI
60AQI
50AQI
72AQI
61AQI
54AQI
57AQI
52AQI
47AQI
41AQI
No. of days
202556AQI
Highest AQI recorded in
March72AQI
Lowest AQI recorded in
September41AQI
202456AQI
Highest AQI recorded in
April66AQI
Lowest AQI recorded in
July44AQI
202359AQI
Highest AQI recorded in
February80AQI
Lowest AQI recorded in
June47AQI
202256AQI
Highest AQI recorded in
February70AQI
Lowest AQI recorded in
September38AQI
202161AQI
Highest AQI recorded in
March94AQI
Lowest AQI recorded in
September39AQI
202056AQI
Highest AQI recorded in
November63AQI
Lowest AQI recorded in
July45AQI
Most & Least Polluted Years Over the Last 6 Years
Simwon Myeon's annual 2025 AQI (56) shows an average percentage change of -3.06% (improved AQI) compared to previous years: 2020 (56), 2021 (61), 2022 (56), 2023 (59), 2024 (56).