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
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 48 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 16th Sep - 17th Sep 2025
Bucheon, Gyeonggi, South Korea
6 AM16th Sep 2025
7 PM
5 AM17th Sep 2025
67AQI
19AQI
53AQI
20AQI
In the last 24 hours,
Bucheon's AQI reached its highest point of 67 at 10 AM during the Day, while the lowest point, 19, was recorded at 5 PM during the Day between 16th Sep and 17th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Bucheon, Gyeonggi, South Korea
27°C26/31°C
28°C25/31°C
28°C25/31°C
28°C26/32°C
28°C26/31°C
28°C26/32°C
29°C26/32°C
29°C27/32°C
27°C25/29°C
27°C24/31°C
27°C25/31°C
27°C25/30°C
28°C25/31°C
28°C25/31°C
26°C24/29°C
26°C23/29°C
27°C24/32°C
25°C23/29°C
27°C24/32°C
27°C25/31°C
26°C24/29°C
25°C23/29°C
25°C23/28°C
26°C21/31°C
26°C23/30°C
25°C21/29°C
23°C21/27°C
24°C22/27°C
26°C22/30°C
25°C24/28°C
--°C/°C
49AQI
43AQI
48AQI
48AQI
2025 Days Vs Air Quality
Bucheon, Gyeonggi, South Korea
25%
64
68%
177
7%
18
Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)
Under WHO’s Safe Air Quality Limits: 25%
Health Risk Level:
Very high
In 2025, 25% 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
Bucheon, Gyeonggi, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
75AQI
56AQI
58AQI
60AQI
71AQI
102AQI
57AQI
74AQI
44AQI
56AQI
61AQI
76AQI
90AQI
103AQI
56AQI
81AQI
78AQI
85AQI
80AQI
134AQI
131AQI
149AQI
109AQI
114AQI
69AQI
58AQI
69AQI
61AQI
61AQI
48AQI
75AQI
83AQI
81AQI
57AQI
53AQI
45AQI
54AQI
48AQI
43AQI
47AQI
56AQI
76AQI
81AQI
57AQI
94AQI
61AQI
112AQI
51AQI
63AQI
47AQI
56AQI
55AQI
59AQI
54AQI
58AQI
55AQI
70AQI
61AQI
83AQI
107AQI
89AQI
59AQI
51AQI
41AQI
75AQI
96AQI
88AQI
111AQI
122AQI
116AQI
104AQI
99AQI
79AQI
62AQI
74AQI
68AQI
79AQI
80AQI
95AQI
107AQI
115AQI
121AQI
119AQI
133AQI
98AQI
100AQI
62AQI
53AQI
46AQI
62AQI
75AQI
84AQI
84AQI
83AQI
67AQI
68AQI
74AQI
80AQI
77AQI
83AQI
94AQI
71AQI
64AQI
49AQI
59AQI
65AQI
71AQI
84AQI
49AQI
65AQI
55AQI
47AQI
37AQI
68AQI
62AQI
57AQI
45AQI
63AQI
71AQI
59AQI
64AQI
52AQI
52AQI
51AQI
54AQI
44AQI
57AQI
64AQI
55AQI
62AQI
79AQI
78AQI
78AQI
73AQI
68AQI
62AQI
53AQI
58AQI
62AQI
40AQI
51AQI
53AQI
66AQI
48AQI
52AQI
72AQI
85AQI
98AQI
85AQI
90AQI
95AQI
92AQI
99AQI
76AQI
58AQI
57AQI
58AQI
68AQI
56AQI
63AQI
52AQI
57AQI
67AQI
75AQI
68AQI
59AQI
69AQI
69AQI
71AQI
68AQI
50AQI
63AQI
70AQI
75AQI
64AQI
54AQI
56AQI
67AQI
66AQI
53AQI
48AQI
45AQI
43AQI
51AQI
52AQI
50AQI
54AQI
70AQI
70AQI
61AQI
55AQI
50AQI
49AQI
62AQI
53AQI
44AQI
52AQI
39AQI
43AQI
35AQI
38AQI
39AQI
37AQI
39AQI
49AQI
60AQI
57AQI
50AQI
68AQI
71AQI
71AQI
66AQI
59AQI
62AQI
62AQI
52AQI
52AQI
49AQI
48AQI
56AQI
56AQI
51AQI
58AQI
53AQI
43AQI
41AQI
41AQI
38AQI
41AQI
51AQI
47AQI
48AQI
49AQI
49AQI
49AQI
51AQI
49AQI
44AQI
50AQI
51AQI
45AQI
43AQI
49AQI
40AQI
48AQI
52AQI
40AQI
39AQI
40AQI
44AQI
50AQI
53AQI
50AQI
52AQI
51AQI
42AQI
43AQI
49AQI
48AQI
79AQI
63AQI
87AQI
67AQI
65AQI
65AQI
52AQI
50AQI
46AQI
No. of days
202565AQI
Highest AQI recorded in
March87AQI
Lowest AQI recorded in
September46AQI
202462AQI
Highest AQI recorded in
January77AQI
Lowest AQI recorded in
September42AQI
202367AQI
Highest AQI recorded in
March96AQI
Lowest AQI recorded in
September46AQI
202264AQI
Highest AQI recorded in
February81AQI
Lowest AQI recorded in
August25AQI
202169AQI
Highest AQI recorded in
March99AQI
Lowest AQI recorded in
September38AQI
202065AQI
Highest AQI recorded in
December77AQI
Lowest AQI recorded in
September46AQI
Most & Least Polluted Years Over the Last 6 Years
Bucheon's annual 2025 AQI (65) shows an average percentage change of -1.05% (improved AQI) compared to previous years: 2020 (65), 2021 (69), 2022 (64), 2023 (67), 2024 (62).