Yangcheon Gu, Gwangmyeongni, 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
Yangcheon Gu, Gwangmyeongni, Gyeonggi, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (21st September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 27 of Good air quality, showing improvement over 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 22nd Sep - 23rd Sep 2025
Yangcheon Gu, Gwangmyeongni, Gyeonggi, South Korea
6 AM22nd Sep 2025
6 PM
5 AM23rd Sep 2025
AQI
AQI
37AQI
16AQI
In the last 24 hours,
Yangcheon Gu's AQI reached its highest point of 37 at 10 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 22nd Sep and 23rd Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Yangcheon Gu, Gwangmyeongni, Gyeonggi, South Korea
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
18°C17/21°C
21°C16/26°C
--°C/°C
--°C/°C
47AQI
41AQI
47AQI
41AQI
2025 Days Vs Air Quality
Yangcheon Gu, Gwangmyeongni, Gyeonggi, South Korea
24%
64
68%
179
8%
20
0.3%
1
Total number of days with different AQI categories in last 265 days in 2025 (100 days remaining)
Under WHO’s Safe Air Quality Limits: 24%
Health Risk Level:
Very high
In 2025, 24% of 265 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
Yangcheon Gu, Gwangmyeongni, Gyeonggi, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
77AQI
60AQI
62AQI
63AQI
75AQI
101AQI
61AQI
77AQI
48AQI
62AQI
67AQI
81AQI
97AQI
112AQI
59AQI
85AQI
86AQI
91AQI
88AQI
139AQI
140AQI
155AQI
118AQI
123AQI
73AQI
63AQI
69AQI
67AQI
66AQI
56AQI
79AQI
91AQI
86AQI
60AQI
60AQI
49AQI
57AQI
55AQI
51AQI
53AQI
62AQI
86AQI
85AQI
60AQI
102AQI
62AQI
119AQI
53AQI
69AQI
51AQI
58AQI
59AQI
64AQI
59AQI
62AQI
56AQI
72AQI
60AQI
85AQI
113AQI
85AQI
61AQI
48AQI
40AQI
77AQI
103AQI
88AQI
112AQI
122AQI
109AQI
104AQI
91AQI
79AQI
60AQI
75AQI
68AQI
79AQI
84AQI
96AQI
107AQI
117AQI
124AQI
120AQI
130AQI
92AQI
94AQI
61AQI
56AQI
48AQI
63AQI
80AQI
84AQI
80AQI
81AQI
62AQI
67AQI
73AQI
79AQI
75AQI
80AQI
92AQI
69AQI
63AQI
49AQI
58AQI
66AQI
71AQI
85AQI
50AQI
66AQI
53AQI
45AQI
39AQI
67AQI
62AQI
58AQI
45AQI
61AQI
71AQI
60AQI
64AQI
52AQI
49AQI
50AQI
53AQI
45AQI
56AQI
62AQI
56AQI
59AQI
78AQI
76AQI
78AQI
74AQI
68AQI
64AQI
51AQI
59AQI
62AQI
39AQI
52AQI
53AQI
69AQI
51AQI
55AQI
71AQI
83AQI
92AQI
82AQI
83AQI
92AQI
92AQI
101AQI
77AQI
59AQI
60AQI
60AQI
71AQI
59AQI
66AQI
54AQI
59AQI
68AQI
77AQI
66AQI
61AQI
74AQI
67AQI
70AQI
67AQI
45AQI
61AQI
72AQI
73AQI
62AQI
49AQI
55AQI
67AQI
65AQI
49AQI
46AQI
42AQI
41AQI
52AQI
52AQI
49AQI
53AQI
72AQI
69AQI
59AQI
52AQI
50AQI
49AQI
62AQI
50AQI
41AQI
50AQI
37AQI
42AQI
35AQI
36AQI
36AQI
36AQI
36AQI
50AQI
61AQI
56AQI
52AQI
69AQI
72AQI
69AQI
67AQI
59AQI
62AQI
62AQI
52AQI
52AQI
49AQI
48AQI
57AQI
55AQI
52AQI
59AQI
52AQI
42AQI
43AQI
43AQI
40AQI
42AQI
52AQI
48AQI
49AQI
51AQI
50AQI
51AQI
54AQI
51AQI
44AQI
51AQI
52AQI
46AQI
44AQI
50AQI
41AQI
49AQI
52AQI
40AQI
42AQI
40AQI
43AQI
50AQI
54AQI
51AQI
51AQI
51AQI
42AQI
45AQI
50AQI
43AQI
38AQI
31AQI
34AQI
27AQI
27AQI
84AQI
67AQI
87AQI
66AQI
64AQI
65AQI
52AQI
50AQI
43AQI
No. of days
202565AQI
Highest AQI recorded in
March87AQI
Lowest AQI recorded in
September43AQI
202461AQI
Highest AQI recorded in
January78AQI
Lowest AQI recorded in
September42AQI
202368AQI
Highest AQI recorded in
March96AQI
Lowest AQI recorded in
September45AQI
202267AQI
Highest AQI recorded in
January93AQI
Lowest AQI recorded in
August34AQI
202168AQI
Highest AQI recorded in
March95AQI
Lowest AQI recorded in
September37AQI
202065AQI
Highest AQI recorded in
December84AQI
Lowest AQI recorded in
September46AQI
Most & Least Polluted Years Over the Last 6 Years
Yangcheon Gu's annual 2025 AQI (65) shows an average percentage change of -1.01% (improved AQI) compared to previous years: 2020 (65), 2021 (68), 2022 (67), 2023 (68), 2024 (61).