Wonjong Dong, Bucheon, 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
Wonjong Dong, Bucheon, Gyeonggi, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (16th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 47 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Wonjong Dong, Bucheon, Gyeonggi, South Korea
6 AM17th Sep 2025
7 PM
5 AM18th Sep 2025
AQI
AQI
53AQI
17AQI
In the last 24 hours,
Wonjong Dong's AQI reached its highest point of 53 at 8 AM during the Night, while the lowest point, undefined, was recorded at 5 AM during the Night between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Wonjong Dong, Bucheon, Gyeonggi, South Korea
28°C24/32°C
28°C24/32°C
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
--°C/°C
--°C/°C
49AQI
43AQI
48AQI
48AQI
2025 Days Vs Air Quality
Wonjong Dong, Bucheon, Gyeonggi, South Korea
27%
69
66%
172
7%
17
0.3%
1
Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)
Under WHO’s Safe Air Quality Limits: 27%
Health Risk Level:
Very high
In 2025, 27% of 260 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
Wonjong Dong, Bucheon, Gyeonggi, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
74AQI
55AQI
55AQI
58AQI
71AQI
105AQI
55AQI
72AQI
42AQI
55AQI
60AQI
76AQI
90AQI
103AQI
54AQI
82AQI
79AQI
89AQI
84AQI
137AQI
137AQI
152AQI
111AQI
116AQI
70AQI
59AQI
68AQI
60AQI
59AQI
45AQI
75AQI
83AQI
79AQI
56AQI
51AQI
41AQI
52AQI
44AQI
40AQI
45AQI
56AQI
82AQI
81AQI
57AQI
97AQI
61AQI
115AQI
51AQI
61AQI
46AQI
54AQI
53AQI
58AQI
52AQI
57AQI
56AQI
70AQI
61AQI
84AQI
108AQI
88AQI
57AQI
48AQI
39AQI
73AQI
96AQI
87AQI
111AQI
122AQI
112AQI
103AQI
93AQI
78AQI
58AQI
71AQI
65AQI
77AQI
77AQI
94AQI
106AQI
116AQI
120AQI
119AQI
133AQI
98AQI
99AQI
62AQI
50AQI
42AQI
60AQI
76AQI
88AQI
85AQI
82AQI
64AQI
67AQI
73AQI
79AQI
74AQI
80AQI
93AQI
68AQI
62AQI
46AQI
56AQI
66AQI
70AQI
85AQI
47AQI
62AQI
54AQI
45AQI
35AQI
67AQI
60AQI
57AQI
43AQI
62AQI
69AQI
57AQI
61AQI
51AQI
50AQI
51AQI
52AQI
43AQI
56AQI
63AQI
55AQI
62AQI
78AQI
77AQI
75AQI
72AQI
66AQI
58AQI
52AQI
57AQI
60AQI
37AQI
49AQI
51AQI
63AQI
46AQI
48AQI
69AQI
81AQI
96AQI
82AQI
85AQI
92AQI
93AQI
99AQI
75AQI
57AQI
58AQI
57AQI
68AQI
56AQI
64AQI
53AQI
58AQI
70AQI
77AQI
69AQI
59AQI
70AQI
69AQI
71AQI
68AQI
45AQI
63AQI
69AQI
76AQI
63AQI
51AQI
54AQI
71AQI
65AQI
49AQI
44AQI
43AQI
40AQI
46AQI
51AQI
49AQI
53AQI
72AQI
72AQI
61AQI
53AQI
49AQI
47AQI
63AQI
51AQI
42AQI
51AQI
37AQI
42AQI
34AQI
39AQI
37AQI
37AQI
35AQI
50AQI
60AQI
58AQI
52AQI
69AQI
74AQI
72AQI
67AQI
59AQI
63AQI
62AQI
53AQI
53AQI
50AQI
48AQI
57AQI
56AQI
51AQI
59AQI
53AQI
44AQI
41AQI
41AQI
37AQI
41AQI
51AQI
48AQI
49AQI
50AQI
49AQI
49AQI
52AQI
50AQI
44AQI
50AQI
51AQI
45AQI
44AQI
49AQI
40AQI
48AQI
52AQI
40AQI
41AQI
40AQI
44AQI
50AQI
53AQI
51AQI
52AQI
52AQI
42AQI
44AQI
49AQI
47AQI
79AQI
62AQI
86AQI
66AQI
63AQI
65AQI
52AQI
50AQI
47AQI
No. of days
202564AQI
Highest AQI recorded in
March86AQI
Lowest AQI recorded in
September47AQI
202460AQI
Highest AQI recorded in
April78AQI
Lowest AQI recorded in
July37AQI
202363AQI
Highest AQI recorded in
March94AQI
Lowest AQI recorded in
September39AQI
202265AQI
Highest AQI recorded in
January87AQI
Lowest AQI recorded in
August31AQI
202170AQI
Highest AQI recorded in
March102AQI
Lowest AQI recorded in
September37AQI
202063AQI
Highest AQI recorded in
April80AQI
Lowest AQI recorded in
August37AQI
Most & Least Polluted Years Over the Last 6 Years
Wonjong Dong's annual 2025 AQI (64) shows an average percentage change of -0.001% (improved AQI) compared to previous years: 2020 (63), 2021 (70), 2022 (65), 2023 (63), 2024 (60).