Seocho Gu, Gwacheon, Gyeonggi, 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
Seocho Gu, Gwacheon, Gyeonggi, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (19th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 41 of Good air quality, showing improvement over 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Sep - 20th Sep 2025
Seocho Gu, Gwacheon, Gyeonggi, South Korea
6 AM19th Sep 2025
6 PM
5 AM20th Sep 2025
40AQI
15AQI
42AQI
21AQI
In the last 24 hours,
Seocho Gu's AQI reached its highest point of 42 at 3 AM during the Night, while the lowest point, 15, was recorded at 12 PM during the Day between 19th Sep and 20th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Seocho Gu, Gwacheon, Gyeonggi, South Korea
29°C25/33°C
29°C25/33°C
29°C25/33°C
30°C26/34°C
29°C26/34°C
27°C24/31°C
27°C23/33°C
27°C24/32°C
27°C25/32°C
28°C24/32°C
28°C24/33°C
25°C23/28°C
26°C22/31°C
27°C22/32°C
24°C22/29°C
27°C22/33°C
27°C24/32°C
26°C23/29°C
25°C21/31°C
25°C22/28°C
25°C19/31°C
26°C20/32°C
24°C21/29°C
22°C20/26°C
24°C20/29°C
26°C21/31°C
24°C22/28°C
22°C19/24°C
21°C19/24°C
19°C17/22°C
--°C/°C
48AQI
40AQI
48AQI
43AQI
2025 Days Vs Air Quality
Seocho Gu, Gwacheon, Gyeonggi, South Korea
29%
75
64%
167
7%
19
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: 29%
Health Risk Level:
Very high
In 2025, 29% 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
Seocho Gu, Gwacheon, Gyeonggi, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
79AQI
60AQI
62AQI
64AQI
77AQI
98AQI
60AQI
74AQI
45AQI
60AQI
66AQI
81AQI
103AQI
107AQI
58AQI
83AQI
90AQI
88AQI
95AQI
137AQI
141AQI
154AQI
116AQI
113AQI
65AQI
58AQI
67AQI
62AQI
60AQI
54AQI
78AQI
84AQI
78AQI
54AQI
51AQI
44AQI
55AQI
49AQI
48AQI
49AQI
60AQI
85AQI
84AQI
57AQI
102AQI
60AQI
119AQI
50AQI
66AQI
47AQI
55AQI
54AQI
61AQI
56AQI
60AQI
59AQI
72AQI
62AQI
86AQI
113AQI
79AQI
60AQI
49AQI
39AQI
75AQI
102AQI
89AQI
112AQI
122AQI
112AQI
101AQI
98AQI
79AQI
60AQI
74AQI
66AQI
74AQI
81AQI
96AQI
110AQI
119AQI
126AQI
125AQI
132AQI
96AQI
87AQI
64AQI
56AQI
50AQI
63AQI
86AQI
86AQI
79AQI
82AQI
66AQI
70AQI
77AQI
80AQI
76AQI
84AQI
92AQI
68AQI
65AQI
49AQI
61AQI
68AQI
74AQI
93AQI
54AQI
67AQI
56AQI
44AQI
43AQI
71AQI
63AQI
60AQI
48AQI
63AQI
69AQI
61AQI
64AQI
54AQI
52AQI
54AQI
53AQI
45AQI
58AQI
67AQI
54AQI
61AQI
79AQI
78AQI
78AQI
75AQI
72AQI
64AQI
52AQI
60AQI
63AQI
45AQI
51AQI
53AQI
63AQI
45AQI
54AQI
69AQI
86AQI
93AQI
82AQI
79AQI
86AQI
95AQI
97AQI
77AQI
58AQI
59AQI
58AQI
69AQI
56AQI
64AQI
51AQI
55AQI
65AQI
72AQI
62AQI
53AQI
69AQI
69AQI
70AQI
64AQI
44AQI
60AQI
72AQI
74AQI
56AQI
46AQI
54AQI
66AQI
65AQI
50AQI
45AQI
39AQI
36AQI
47AQI
49AQI
45AQI
50AQI
72AQI
63AQI
55AQI
49AQI
46AQI
45AQI
61AQI
47AQI
40AQI
51AQI
35AQI
39AQI
31AQI
33AQI
33AQI
32AQI
35AQI
49AQI
59AQI
45AQI
44AQI
64AQI
70AQI
60AQI
61AQI
58AQI
62AQI
62AQI
51AQI
52AQI
47AQI
46AQI
56AQI
54AQI
51AQI
57AQI
51AQI
42AQI
43AQI
41AQI
39AQI
42AQI
52AQI
49AQI
48AQI
49AQI
49AQI
50AQI
52AQI
49AQI
44AQI
51AQI
51AQI
47AQI
43AQI
50AQI
40AQI
49AQI
51AQI
39AQI
36AQI
40AQI
43AQI
50AQI
53AQI
50AQI
51AQI
50AQI
40AQI
44AQI
47AQI
42AQI
36AQI
32AQI
41AQI
82AQI
65AQI
87AQI
69AQI
64AQI
63AQI
48AQI
50AQI
44AQI
No. of days
202564AQI
Highest AQI recorded in
March87AQI
Lowest AQI recorded in
September44AQI
202461AQI
Highest AQI recorded in
March79AQI
Lowest AQI recorded in
September36AQI
202365AQI
Highest AQI recorded in
March96AQI
Lowest AQI recorded in
September39AQI
202262AQI
Highest AQI recorded in
January79AQI
Lowest AQI recorded in
August20AQI
202164AQI
Highest AQI recorded in
March101AQI
Lowest AQI recorded in
September31AQI
202061AQI
Highest AQI recorded in
May80AQI
Lowest AQI recorded in
September36AQI
Most & Least Polluted Years Over the Last 6 Years
Seocho Gu's annual 2025 AQI (64) shows an average percentage change of 3.01% (worsened AQI) compared to previous years: 2020 (61), 2021 (64), 2022 (62), 2023 (65), 2024 (61).