Samsan, 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
Samsan, 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 50 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
Samsan, Bucheon, Gyeonggi, South Korea
6 AM16th Sep 2025
7 PM
5 AM17th Sep 2025
72AQI
23AQI
54AQI
26AQI
In the last 24 hours,
Samsan's AQI reached its highest point of 72 at 10 AM during the Day, while the lowest point, 23, was recorded at 6 PM during the Day between 16th Sep and 17th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Samsan, 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
27°C22/32°C
25°C21/29°C
23°C21/27°C
24°C22/27°C
26°C22/30°C
25°C24/28°C
--°C/°C
49AQI
44AQI
48AQI
48AQI
2025 Days Vs Air Quality
Samsan, Bucheon, Gyeonggi, South Korea
24%
63
71%
183
5%
13
Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)
Under WHO’s Safe Air Quality Limits: 24%
Health Risk Level:
Very high
In 2025, 24% 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
Samsan, Bucheon, Gyeonggi, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
72AQI
54AQI
57AQI
59AQI
67AQI
98AQI
56AQI
73AQI
42AQI
54AQI
59AQI
73AQI
84AQI
94AQI
54AQI
77AQI
73AQI
81AQI
74AQI
129AQI
125AQI
143AQI
101AQI
110AQI
69AQI
57AQI
68AQI
61AQI
62AQI
49AQI
73AQI
83AQI
80AQI
57AQI
52AQI
44AQI
54AQI
48AQI
42AQI
46AQI
54AQI
71AQI
76AQI
54AQI
88AQI
59AQI
105AQI
51AQI
61AQI
48AQI
56AQI
54AQI
59AQI
55AQI
57AQI
53AQI
66AQI
60AQI
76AQI
97AQI
88AQI
55AQI
48AQI
37AQI
73AQI
92AQI
86AQI
103AQI
117AQI
115AQI
96AQI
95AQI
76AQI
62AQI
74AQI
68AQI
80AQI
79AQI
89AQI
97AQI
105AQI
110AQI
110AQI
127AQI
93AQI
96AQI
59AQI
52AQI
46AQI
60AQI
71AQI
80AQI
81AQI
81AQI
65AQI
65AQI
72AQI
79AQI
76AQI
81AQI
93AQI
71AQI
63AQI
49AQI
58AQI
64AQI
71AQI
82AQI
47AQI
64AQI
55AQI
45AQI
34AQI
67AQI
63AQI
58AQI
48AQI
64AQI
73AQI
60AQI
64AQI
53AQI
51AQI
50AQI
53AQI
44AQI
56AQI
62AQI
55AQI
59AQI
77AQI
75AQI
77AQI
73AQI
68AQI
61AQI
54AQI
59AQI
61AQI
41AQI
50AQI
50AQI
66AQI
49AQI
52AQI
72AQI
78AQI
96AQI
82AQI
90AQI
94AQI
91AQI
96AQI
76AQI
58AQI
58AQI
58AQI
68AQI
57AQI
64AQI
53AQI
58AQI
67AQI
75AQI
69AQI
61AQI
68AQI
70AQI
71AQI
68AQI
53AQI
65AQI
72AQI
75AQI
66AQI
56AQI
58AQI
65AQI
66AQI
55AQI
51AQI
47AQI
48AQI
56AQI
54AQI
53AQI
55AQI
68AQI
68AQI
62AQI
57AQI
52AQI
50AQI
61AQI
54AQI
47AQI
53AQI
39AQI
43AQI
39AQI
43AQI
43AQI
42AQI
41AQI
48AQI
58AQI
58AQI
53AQI
67AQI
73AQI
70AQI
67AQI
60AQI
63AQI
62AQI
53AQI
53AQI
49AQI
49AQI
58AQI
58AQI
55AQI
59AQI
55AQI
43AQI
41AQI
41AQI
37AQI
40AQI
51AQI
48AQI
48AQI
49AQI
49AQI
49AQI
51AQI
49AQI
43AQI
49AQI
51AQI
45AQI
44AQI
49AQI
40AQI
48AQI
52AQI
44AQI
37AQI
39AQI
43AQI
50AQI
52AQI
50AQI
53AQI
51AQI
42AQI
43AQI
50AQI
50AQI
76AQI
61AQI
83AQI
66AQI
64AQI
66AQI
54AQI
50AQI
47AQI
No. of days
202564AQI
Highest AQI recorded in
March83AQI
Lowest AQI recorded in
September47AQI
202464AQI
Highest AQI recorded in
January77AQI
Lowest AQI recorded in
September44AQI
202371AQI
Highest AQI recorded in
March95AQI
Lowest AQI recorded in
September50AQI
202262AQI
Highest AQI recorded in
February77AQI
Lowest AQI recorded in
August34AQI
202163AQI
Highest AQI recorded in
March86AQI
Lowest AQI recorded in
September35AQI
202053AQI
Highest AQI recorded in
June62AQI
Lowest AQI recorded in
September39AQI
Most & Least Polluted Years Over the Last 6 Years
Samsan's annual 2025 AQI (64) shows an average percentage change of 2.9% (worsened AQI) compared to previous years: 2020 (53), 2021 (63), 2022 (62), 2023 (71), 2024 (64).