Chungju, Chungbuk, 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
Chungju, Chungbuk, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (21st September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 25 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: 22nd Sep - 23rd Sep 2025
Chungju, Chungbuk, South Korea
6 AM22nd Sep 2025
6 PM
5 AM23rd Sep 2025
AQI
AQI
31AQI
19AQI
In the last 24 hours,
Chungju's AQI reached its highest point of 31 at 8 AM during the Night, while the lowest point, 19, was recorded at 7 PM during the Night between 22nd Sep and 23rd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Chungju, Chungbuk, South Korea
28°C24/32°C
27°C23/33°C
25°C21/29°C
25°C20/31°C
25°C20/31°C
26°C23/31°C
26°C23/31°C
26°C22/32°C
25°C21/31°C
23°C21/28°C
25°C19/32°C
22°C20/24°C
25°C19/32°C
25°C21/29°C
24°C20/28°C
22°C18/29°C
21°C18/24°C
22°C17/30°C
22°C16/31°C
21°C18/26°C
22°C20/25°C
22°C19/27°C
23°C18/29°C
23°C19/28°C
22°C20/25°C
19°C16/21°C
16°C14/18°C
16°C14/19°C
19°C14/25°C
--°C/°C
--°C/°C
44AQI
37AQI
43AQI
37AQI
2025 Days Vs Air Quality
Chungju, Chungbuk, South Korea
36%
94
61%
160
4%
10
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Under WHO’s Safe Air Quality Limits: 36%
Health Risk Level:
High
In 2025, 36% of 265 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
Chungju, Chungbuk, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
71AQI
75AQI
59AQI
63AQI
70AQI
101AQI
64AQI
75AQI
45AQI
65AQI
64AQI
81AQI
94AQI
97AQI
62AQI
71AQI
88AQI
103AQI
93AQI
114AQI
140AQI
136AQI
124AQI
118AQI
82AQI
67AQI
70AQI
62AQI
64AQI
61AQI
78AQI
89AQI
81AQI
65AQI
53AQI
51AQI
52AQI
59AQI
51AQI
57AQI
63AQI
74AQI
77AQI
53AQI
84AQI
58AQI
104AQI
54AQI
64AQI
52AQI
57AQI
56AQI
58AQI
58AQI
59AQI
58AQI
80AQI
60AQI
81AQI
92AQI
77AQI
55AQI
47AQI
43AQI
61AQI
75AQI
71AQI
84AQI
83AQI
94AQI
94AQI
85AQI
75AQI
50AQI
69AQI
61AQI
59AQI
78AQI
77AQI
89AQI
89AQI
98AQI
99AQI
123AQI
85AQI
102AQI
79AQI
59AQI
54AQI
61AQI
67AQI
70AQI
75AQI
79AQI
65AQI
69AQI
65AQI
82AQI
70AQI
77AQI
74AQI
59AQI
58AQI
48AQI
55AQI
63AQI
64AQI
77AQI
59AQI
59AQI
43AQI
40AQI
28AQI
54AQI
63AQI
53AQI
44AQI
49AQI
62AQI
56AQI
50AQI
53AQI
46AQI
47AQI
47AQI
41AQI
51AQI
64AQI
46AQI
40AQI
61AQI
64AQI
68AQI
68AQI
57AQI
53AQI
45AQI
57AQI
57AQI
50AQI
48AQI
49AQI
60AQI
43AQI
46AQI
56AQI
65AQI
75AQI
69AQI
54AQI
60AQI
69AQI
85AQI
76AQI
53AQI
56AQI
58AQI
65AQI
61AQI
64AQI
64AQI
57AQI
57AQI
60AQI
45AQI
52AQI
56AQI
60AQI
64AQI
64AQI
49AQI
44AQI
47AQI
56AQI
54AQI
43AQI
52AQI
60AQI
59AQI
51AQI
44AQI
44AQI
41AQI
52AQI
54AQI
51AQI
54AQI
60AQI
63AQI
57AQI
51AQI
48AQI
47AQI
53AQI
45AQI
39AQI
49AQI
37AQI
39AQI
31AQI
37AQI
42AQI
36AQI
43AQI
50AQI
51AQI
43AQI
39AQI
47AQI
52AQI
50AQI
50AQI
55AQI
60AQI
60AQI
49AQI
50AQI
44AQI
49AQI
52AQI
53AQI
47AQI
52AQI
41AQI
39AQI
38AQI
41AQI
41AQI
40AQI
50AQI
44AQI
45AQI
46AQI
47AQI
50AQI
51AQI
50AQI
43AQI
47AQI
50AQI
46AQI
44AQI
46AQI
39AQI
45AQI
46AQI
38AQI
33AQI
36AQI
38AQI
45AQI
47AQI
45AQI
45AQI
43AQI
38AQI
42AQI
47AQI
43AQI
34AQI
30AQI
30AQI
27AQI
25AQI
82AQI
65AQI
76AQI
61AQI
55AQI
58AQI
47AQI
47AQI
39AQI
No. of days
202560AQI
Highest AQI recorded in
January82AQI
Lowest AQI recorded in
September39AQI
202456AQI
Highest AQI recorded in
January72AQI
Lowest AQI recorded in
September35AQI
202369AQI
Highest AQI recorded in
February98AQI
Lowest AQI recorded in
September48AQI
202268AQI
Highest AQI recorded in
February85AQI
Lowest AQI recorded in
August36AQI
202162AQI
Highest AQI recorded in
February78AQI
Lowest AQI recorded in
September35AQI
202060AQI
Highest AQI recorded in
December81AQI
Lowest AQI recorded in
July39AQI
Most & Least Polluted Years Over the Last 6 Years
Chungju's annual 2025 AQI (60) shows an average percentage change of -4.9% (improved AQI) compared to previous years: 2020 (60), 2021 (62), 2022 (68), 2023 (69), 2024 (56).