Wongok, Ansan, Gyeonggi, 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
Wongok, Ansan, Gyeonggi, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 36 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Oct - 6th Oct 2025
Wongok, Ansan, Gyeonggi, South Korea
6 AM5th Oct 2025
6 PM
5 AM6th Oct 2025
AQI
AQI
65AQI
15AQI
In the last 24 hours,
Wongok's AQI reached its highest point of 65 at 6 PM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 5th Oct and 6th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Wongok, Ansan, Gyeonggi, South Korea
27°C24/32°C
25°C23/28°C
25°C22/28°C
25°C22/28°C
26°C22/30°C
26°C23/31°C
25°C20/29°C
23°C20/26°C
25°C22/28°C
26°C23/31°C
25°C23/29°C
23°C19/26°C
21°C19/24°C
18°C16/20°C
18°C16/20°C
22°C18/26°C
22°C20/26°C
23°C21/27°C
21°C20/23°C
22°C20/25°C
22°C18/26°C
23°C21/28°C
19°C18/20°C
19°C17/22°C
20°C17/23°C
20°C17/24°C
21°C18/25°C
21°C20/22°C
21°C21/22°C
--°C/°C
--°C/°C
48AQI
43AQI
50AQI
44AQI
2025 Days Vs Air Quality
Wongok, Ansan, Gyeonggi, South Korea
26%
73
66%
184
7%
19
0.3%
1
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 26%
Health Risk Level:
Very high
In 2025, 26% of 278 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
Wongok, Ansan, Gyeonggi, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
78AQI
57AQI
60AQI
60AQI
70AQI
101AQI
55AQI
69AQI
42AQI
52AQI
57AQI
78AQI
91AQI
102AQI
54AQI
77AQI
76AQI
79AQI
87AQI
133AQI
135AQI
154AQI
112AQI
111AQI
70AQI
56AQI
65AQI
58AQI
59AQI
49AQI
71AQI
84AQI
91AQI
53AQI
52AQI
43AQI
56AQI
48AQI
41AQI
49AQI
57AQI
73AQI
83AQI
55AQI
95AQI
58AQI
116AQI
50AQI
64AQI
44AQI
56AQI
55AQI
57AQI
56AQI
57AQI
58AQI
71AQI
63AQI
91AQI
105AQI
85AQI
55AQI
46AQI
35AQI
81AQI
98AQI
93AQI
108AQI
125AQI
115AQI
114AQI
108AQI
81AQI
73AQI
74AQI
68AQI
74AQI
80AQI
94AQI
110AQI
116AQI
118AQI
121AQI
131AQI
100AQI
99AQI
61AQI
49AQI
44AQI
63AQI
79AQI
88AQI
91AQI
88AQI
77AQI
71AQI
77AQI
85AQI
80AQI
89AQI
99AQI
73AQI
67AQI
51AQI
59AQI
67AQI
73AQI
89AQI
55AQI
72AQI
59AQI
49AQI
36AQI
69AQI
58AQI
56AQI
45AQI
63AQI
71AQI
61AQI
64AQI
52AQI
53AQI
50AQI
57AQI
44AQI
56AQI
64AQI
52AQI
65AQI
76AQI
85AQI
77AQI
74AQI
69AQI
61AQI
52AQI
57AQI
62AQI
37AQI
48AQI
52AQI
63AQI
58AQI
58AQI
71AQI
97AQI
99AQI
87AQI
94AQI
98AQI
95AQI
104AQI
83AQI
64AQI
64AQI
61AQI
70AQI
59AQI
67AQI
60AQI
61AQI
69AQI
83AQI
70AQI
63AQI
72AQI
70AQI
72AQI
70AQI
50AQI
63AQI
71AQI
80AQI
66AQI
53AQI
60AQI
73AQI
70AQI
53AQI
48AQI
44AQI
51AQI
55AQI
56AQI
54AQI
56AQI
73AQI
75AQI
62AQI
55AQI
50AQI
50AQI
65AQI
59AQI
47AQI
55AQI
39AQI
45AQI
37AQI
42AQI
43AQI
44AQI
47AQI
52AQI
63AQI
58AQI
52AQI
68AQI
70AQI
75AQI
65AQI
60AQI
61AQI
61AQI
51AQI
50AQI
48AQI
52AQI
58AQI
62AQI
57AQI
60AQI
52AQI
42AQI
44AQI
42AQI
40AQI
42AQI
52AQI
47AQI
47AQI
47AQI
48AQI
51AQI
54AQI
50AQI
46AQI
50AQI
52AQI
47AQI
46AQI
50AQI
42AQI
50AQI
51AQI
45AQI
47AQI
40AQI
41AQI
48AQI
54AQI
50AQI
51AQI
49AQI
42AQI
45AQI
49AQI
46AQI
37AQI
34AQI
33AQI
27AQI
25AQI
25AQI
26AQI
31AQI
39AQI
70AQI
58AQI
50AQI
58AQI
70AQI
74AQI
70AQI
71AQI
36AQI
78AQI
63AQI
88AQI
70AQI
66AQI
68AQI
55AQI
51AQI
44AQI
63AQI
No. of days
202565AQI
Highest AQI recorded in
March88AQI
Lowest AQI recorded in
September44AQI
202464AQI
Highest AQI recorded in
April82AQI
Lowest AQI recorded in
September42AQI
202374AQI
Highest AQI recorded in
March103AQI
Lowest AQI recorded in
September47AQI
202275AQI
Highest AQI recorded in
February93AQI
Lowest AQI recorded in
August34AQI
202165AQI
Highest AQI recorded in
June85AQI
Lowest AQI recorded in
September44AQI
202062AQI
Highest AQI recorded in
April83AQI
Lowest AQI recorded in
March59AQI
Most & Least Polluted Years Over the Last 6 Years
Wongok's annual 2025 AQI (65) shows an average percentage change of -4.3% (improved AQI) compared to previous years: 2020 (62), 2021 (65), 2022 (75), 2023 (74), 2024 (64).