Bogun ri, Tangjin, 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
Bogun ri, Tangjin, Chungnam, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (19th September ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 3rd highest AQI at 37 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: 20th Sep - 21st Sep 2025
Bogun ri, Tangjin, Chungnam, South Korea
6 AM20th Sep 2025
6 PM
5 AM21st Sep 2025
AQI
AQI
38AQI
16AQI
In the last 24 hours,
Bogun ri's AQI reached its highest point of 38 at 6 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
Bogun ri, Tangjin, Chungnam, South Korea
27°C24/32°C
27°C23/31°C
28°C24/32°C
27°C24/32°C
26°C23/28°C
25°C21/30°C
25°C21/30°C
27°C24/31°C
27°C24/31°C
27°C23/32°C
25°C23/29°C
24°C21/28°C
25°C20/31°C
23°C22/26°C
26°C21/31°C
26°C23/30°C
24°C21/28°C
23°C19/27°C
22°C20/25°C
23°C19/29°C
23°C19/29°C
22°C20/24°C
23°C20/25°C
23°C21/27°C
24°C20/29°C
24°C21/29°C
22°C19/25°C
20°C18/24°C
17°C16/18°C
--°C/°C
--°C/°C
48AQI
43AQI
47AQI
44AQI
2025 Days Vs Air Quality
Bogun ri, Tangjin, Chungnam, South Korea
22%
57
71%
186
7%
19
Total number of days with different AQI categories in last 263 days in 2025 (102 days remaining)
Under WHO’s Safe Air Quality Limits: 22%
Health Risk Level:
Very high
In 2025, 22% of 263 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
Bogun ri, Tangjin, Chungnam, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
76AQI
62AQI
64AQI
66AQI
66AQI
83AQI
58AQI
67AQI
49AQI
64AQI
69AQI
83AQI
94AQI
103AQI
61AQI
73AQI
77AQI
86AQI
87AQI
132AQI
142AQI
146AQI
117AQI
130AQI
87AQI
67AQI
66AQI
60AQI
58AQI
59AQI
82AQI
88AQI
105AQI
57AQI
56AQI
51AQI
58AQI
51AQI
47AQI
55AQI
64AQI
88AQI
80AQI
60AQI
94AQI
65AQI
115AQI
56AQI
64AQI
49AQI
58AQI
60AQI
60AQI
57AQI
61AQI
56AQI
75AQI
71AQI
89AQI
110AQI
91AQI
58AQI
46AQI
43AQI
82AQI
100AQI
97AQI
118AQI
132AQI
114AQI
114AQI
98AQI
90AQI
63AQI
78AQI
69AQI
83AQI
85AQI
101AQI
98AQI
110AQI
119AQI
116AQI
128AQI
102AQI
92AQI
60AQI
53AQI
51AQI
66AQI
78AQI
92AQI
92AQI
93AQI
83AQI
71AQI
74AQI
77AQI
76AQI
79AQI
99AQI
70AQI
66AQI
47AQI
61AQI
62AQI
69AQI
80AQI
52AQI
70AQI
61AQI
52AQI
50AQI
72AQI
60AQI
57AQI
40AQI
64AQI
74AQI
58AQI
65AQI
58AQI
54AQI
46AQI
52AQI
52AQI
56AQI
64AQI
52AQI
60AQI
69AQI
72AQI
74AQI
74AQI
59AQI
53AQI
44AQI
58AQI
59AQI
39AQI
55AQI
53AQI
65AQI
53AQI
54AQI
66AQI
76AQI
83AQI
88AQI
91AQI
99AQI
95AQI
92AQI
73AQI
59AQI
58AQI
60AQI
66AQI
58AQI
61AQI
54AQI
56AQI
63AQI
71AQI
66AQI
58AQI
61AQI
62AQI
65AQI
65AQI
53AQI
55AQI
55AQI
62AQI
59AQI
52AQI
56AQI
63AQI
61AQI
53AQI
50AQI
49AQI
50AQI
56AQI
52AQI
50AQI
51AQI
58AQI
64AQI
55AQI
54AQI
54AQI
53AQI
62AQI
59AQI
50AQI
56AQI
44AQI
49AQI
40AQI
43AQI
44AQI
42AQI
50AQI
54AQI
68AQI
60AQI
53AQI
66AQI
68AQI
68AQI
62AQI
58AQI
62AQI
61AQI
53AQI
53AQI
51AQI
49AQI
57AQI
54AQI
56AQI
58AQI
52AQI
44AQI
43AQI
39AQI
37AQI
40AQI
50AQI
48AQI
49AQI
50AQI
51AQI
49AQI
51AQI
48AQI
43AQI
50AQI
52AQI
46AQI
43AQI
46AQI
42AQI
46AQI
50AQI
45AQI
39AQI
39AQI
41AQI
48AQI
51AQI
49AQI
52AQI
50AQI
41AQI
41AQI
50AQI
46AQI
36AQI
38AQI
37AQI
82AQI
68AQI
89AQI
69AQI
63AQI
62AQI
54AQI
50AQI
44AQI
No. of days
202565AQI
Highest AQI recorded in
March89AQI
Lowest AQI recorded in
September44AQI
202465AQI
Highest AQI recorded in
January86AQI
Lowest AQI recorded in
July38AQI
202371AQI
Highest AQI recorded in
February104AQI
Lowest AQI recorded in
September49AQI
202276AQI
Highest AQI recorded in
November95AQI
Lowest AQI recorded in
September57AQI
Most & Least Polluted Years Over the Last 4 Years
Bogun ri's annual 2025 AQI (65) shows an average percentage change of -7.2% (improved AQI) compared to previous years: 2022 (76), 2023 (71), 2024 (65).