Jangjae ri, Chonan, Chungnam, South Korea Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Jangjae ri, Chonan, Chungnam, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (7th October ):
On this day, AQI across the 4 years varied significantly: 2025 ranks 4th highest AQI at 31 of Good air quality, showing improvement over 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 7th Oct - 8th Oct 2025
Jangjae ri, Chonan, Chungnam, South Korea
6 AM7th Oct 2025
6 PM
5 AM8th Oct 2025
AQI
AQI
50AQI
16AQI
In the last 24 hours,
Jangjae ri's AQI reached its highest point of 50 at 11 PM during the Night, while the lowest point, undefined, was recorded at 7 PM during the Night between 7th Oct and 8th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Jangjae ri, Chonan, Chungnam, South Korea
22°C17/27°C
22°C18/25°C
23°C18/28°C
23°C18/29°C
21°C19/25°C
23°C20/27°C
23°C20/28°C
24°C20/29°C
24°C21/29°C
22°C19/25°C
20°C17/24°C
17°C15/19°C
17°C15/21°C
19°C15/25°C
19°C15/24°C
20°C16/24°C
21°C16/25°C
21°C18/22°C
20°C16/26°C
21°C16/27°C
19°C17/20°C
19°C15/23°C
18°C14/23°C
19°C14/24°C
20°C17/25°C
18°C16/19°C
20°C17/23°C
20°C19/22°C
19°C16/22°C
19°C17/21°C
--°C/°C
48AQI
42AQI
48AQI
42AQI
2025 Days Vs Air Quality
Jangjae ri, Chonan, Chungnam, South Korea
30%
84
65%
183
5%
13
Total number of days with different AQI categories in last 281 days in 2025 (84 days remaining)
Under WHO’s Safe Air Quality Limits: 30%
Health Risk Level:
High
In 2025, 30% of 281 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
Jangjae ri, Chonan, Chungnam, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
75AQI
70AQI
63AQI
65AQI
68AQI
85AQI
61AQI
69AQI
44AQI
63AQI
70AQI
91AQI
94AQI
97AQI
58AQI
71AQI
90AQI
95AQI
93AQI
127AQI
141AQI
144AQI
123AQI
128AQI
86AQI
63AQI
63AQI
57AQI
56AQI
61AQI
82AQI
90AQI
98AQI
59AQI
51AQI
49AQI
55AQI
47AQI
47AQI
57AQI
66AQI
85AQI
74AQI
53AQI
86AQI
60AQI
116AQI
53AQI
59AQI
52AQI
57AQI
59AQI
62AQI
56AQI
59AQI
59AQI
74AQI
64AQI
82AQI
94AQI
68AQI
52AQI
41AQI
42AQI
77AQI
95AQI
86AQI
109AQI
109AQI
108AQI
93AQI
95AQI
85AQI
57AQI
73AQI
65AQI
78AQI
88AQI
90AQI
93AQI
103AQI
112AQI
102AQI
119AQI
90AQI
85AQI
57AQI
51AQI
52AQI
61AQI
76AQI
80AQI
84AQI
88AQI
67AQI
65AQI
68AQI
72AQI
69AQI
72AQI
85AQI
61AQI
60AQI
45AQI
58AQI
59AQI
68AQI
79AQI
49AQI
65AQI
57AQI
43AQI
41AQI
62AQI
59AQI
54AQI
43AQI
65AQI
70AQI
65AQI
61AQI
53AQI
50AQI
50AQI
49AQI
46AQI
54AQI
68AQI
51AQI
54AQI
65AQI
70AQI
72AQI
75AQI
60AQI
50AQI
40AQI
58AQI
64AQI
55AQI
53AQI
57AQI
62AQI
46AQI
53AQI
63AQI
80AQI
78AQI
81AQI
83AQI
86AQI
95AQI
100AQI
76AQI
68AQI
59AQI
68AQI
75AQI
66AQI
65AQI
58AQI
57AQI
63AQI
68AQI
56AQI
61AQI
61AQI
64AQI
67AQI
68AQI
55AQI
52AQI
51AQI
57AQI
54AQI
47AQI
53AQI
60AQI
59AQI
53AQI
49AQI
50AQI
48AQI
51AQI
48AQI
47AQI
53AQI
59AQI
61AQI
53AQI
53AQI
55AQI
54AQI
61AQI
60AQI
49AQI
53AQI
42AQI
46AQI
37AQI
44AQI
43AQI
41AQI
49AQI
55AQI
58AQI
50AQI
45AQI
60AQI
64AQI
59AQI
57AQI
56AQI
62AQI
61AQI
52AQI
51AQI
49AQI
49AQI
54AQI
53AQI
53AQI
56AQI
48AQI
40AQI
41AQI
38AQI
38AQI
40AQI
50AQI
46AQI
46AQI
49AQI
47AQI
48AQI
51AQI
46AQI
42AQI
49AQI
54AQI
46AQI
42AQI
45AQI
41AQI
46AQI
50AQI
41AQI
33AQI
39AQI
39AQI
47AQI
51AQI
48AQI
49AQI
48AQI
38AQI
40AQI
49AQI
48AQI
36AQI
38AQI
34AQI
33AQI
29AQI
29AQI
27AQI
34AQI
38AQI
46AQI
61AQI
41AQI
36AQI
58AQI
65AQI
63AQI
55AQI
50AQI
53AQI
47AQI
31AQI
82AQI
65AQI
82AQI
64AQI
61AQI
63AQI
52AQI
48AQI
42AQI
52AQI
No. of days
202562AQI
Highest AQI recorded in
January82AQI
Lowest AQI recorded in
September42AQI
202463AQI
Highest AQI recorded in
January88AQI
Lowest AQI recorded in
July38AQI
202371AQI
Highest AQI recorded in
February108AQI
Lowest AQI recorded in
July48AQI
202277AQI
Highest AQI recorded in
November90AQI
Lowest AQI recorded in
September55AQI
Most & Least Polluted Years Over the Last 4 Years
Jangjae ri's annual 2025 AQI (62) shows an average percentage change of -11.1% (improved AQI) compared to previous years: 2022 (77), 2023 (71), 2024 (63).