Onam Eup, Yanggok, 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
Onam Eup, Yanggok, Gyeonggi, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (18th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 32 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: 19th Sep - 20th Sep 2025
Onam Eup, Yanggok, Gyeonggi, South Korea
6 AM19th Sep 2025
6 PM
5 AM20th Sep 2025
AQI
AQI
40AQI
18AQI
In the last 24 hours,
Onam Eup's AQI reached its highest point of 40 at 2 AM during the Night, while the lowest point, 18, was recorded at 11 AM during the Night between 19th Sep and 20th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Onam Eup, Yanggok, Gyeonggi, South Korea
28°C25/32°C
28°C25/33°C
28°C24/32°C
29°C26/33°C
29°C26/34°C
27°C25/31°C
27°C23/32°C
27°C25/32°C
27°C25/31°C
28°C25/32°C
28°C24/33°C
24°C23/27°C
26°C21/30°C
27°C22/32°C
24°C22/28°C
27°C22/32°C
27°C24/31°C
25°C23/29°C
25°C21/30°C
25°C22/28°C
25°C19/31°C
25°C20/31°C
24°C21/28°C
22°C20/26°C
24°C21/29°C
25°C21/30°C
23°C22/25°C
21°C19/23°C
21°C19/24°C
--°C/°C
--°C/°C
48AQI
41AQI
47AQI
43AQI
2025 Days Vs Air Quality
Onam Eup, Yanggok, Gyeonggi, South Korea
31%
80
65%
169
5%
12
Total number of days with different AQI categories in last 262 days in 2025 (103 days remaining)
Under WHO’s Safe Air Quality Limits: 31%
Health Risk Level:
High
In 2025, 31% of 262 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
Onam Eup, Yanggok, Gyeonggi, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
76AQI
56AQI
62AQI
61AQI
74AQI
97AQI
63AQI
70AQI
46AQI
62AQI
67AQI
72AQI
99AQI
103AQI
59AQI
77AQI
84AQI
80AQI
95AQI
131AQI
142AQI
143AQI
116AQI
98AQI
62AQI
51AQI
62AQI
63AQI
63AQI
55AQI
77AQI
77AQI
71AQI
53AQI
53AQI
45AQI
56AQI
55AQI
55AQI
52AQI
59AQI
75AQI
82AQI
52AQI
93AQI
58AQI
113AQI
52AQI
65AQI
50AQI
57AQI
55AQI
58AQI
57AQI
58AQI
61AQI
77AQI
55AQI
94AQI
97AQI
81AQI
56AQI
49AQI
39AQI
61AQI
92AQI
84AQI
91AQI
106AQI
99AQI
93AQI
78AQI
73AQI
52AQI
68AQI
61AQI
61AQI
76AQI
90AQI
107AQI
110AQI
114AQI
117AQI
129AQI
89AQI
92AQI
60AQI
49AQI
45AQI
54AQI
75AQI
73AQI
70AQI
73AQI
54AQI
61AQI
68AQI
71AQI
69AQI
70AQI
80AQI
62AQI
57AQI
42AQI
52AQI
62AQI
67AQI
76AQI
49AQI
53AQI
52AQI
40AQI
38AQI
60AQI
67AQI
57AQI
50AQI
58AQI
65AQI
59AQI
56AQI
49AQI
47AQI
48AQI
48AQI
40AQI
56AQI
59AQI
49AQI
48AQI
68AQI
66AQI
70AQI
72AQI
61AQI
52AQI
39AQI
57AQI
60AQI
47AQI
44AQI
52AQI
59AQI
43AQI
51AQI
61AQI
78AQI
79AQI
76AQI
64AQI
70AQI
77AQI
83AQI
70AQI
52AQI
55AQI
57AQI
68AQI
59AQI
68AQI
56AQI
54AQI
58AQI
70AQI
57AQI
62AQI
63AQI
68AQI
70AQI
68AQI
55AQI
57AQI
56AQI
58AQI
55AQI
51AQI
52AQI
57AQI
59AQI
53AQI
50AQI
47AQI
44AQI
49AQI
51AQI
51AQI
55AQI
60AQI
61AQI
57AQI
50AQI
48AQI
47AQI
57AQI
49AQI
45AQI
49AQI
39AQI
39AQI
31AQI
36AQI
36AQI
33AQI
33AQI
47AQI
53AQI
45AQI
40AQI
55AQI
56AQI
55AQI
54AQI
58AQI
62AQI
61AQI
48AQI
52AQI
45AQI
45AQI
56AQI
51AQI
46AQI
55AQI
49AQI
40AQI
40AQI
40AQI
38AQI
42AQI
51AQI
43AQI
46AQI
46AQI
46AQI
48AQI
51AQI
48AQI
45AQI
49AQI
51AQI
47AQI
45AQI
52AQI
41AQI
50AQI
49AQI
36AQI
34AQI
39AQI
42AQI
49AQI
53AQI
48AQI
50AQI
48AQI
39AQI
44AQI
44AQI
44AQI
36AQI
32AQI
80AQI
64AQI
80AQI
61AQI
57AQI
61AQI
47AQI
48AQI
43AQI
No. of days
202561AQI
Highest AQI recorded in
March80AQI
Lowest AQI recorded in
September43AQI
202460AQI
Highest AQI recorded in
January81AQI
Lowest AQI recorded in
September39AQI
202364AQI
Highest AQI recorded in
March89AQI
Lowest AQI recorded in
August40AQI
202264AQI
Highest AQI recorded in
February85AQI
Lowest AQI recorded in
August22AQI
202163AQI
Highest AQI recorded in
March86AQI
Lowest AQI recorded in
September33AQI
202059AQI
Highest AQI recorded in
December83AQI
Lowest AQI recorded in
September37AQI
Most & Least Polluted Years Over the Last 6 Years
Onam Eup's annual 2025 AQI (61) shows an average percentage change of -1.5% (improved AQI) compared to previous years: 2020 (59), 2021 (63), 2022 (64), 2023 (64), 2024 (60).