Goyang, 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
Goyang, 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 37 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: 18th Sep - 19th Sep 2025
Goyang, Gyeonggi, South Korea
6 AM18th Sep 2025
7 PM
5 AM19th Sep 2025
47AQI
13AQI
46AQI
19AQI
In the last 24 hours,
Goyang's AQI reached its highest point of 47 at 6 AM during the Day, while the lowest point, 13, was recorded at 6 PM during the Day between 18th Sep and 19th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Goyang, Gyeonggi, South Korea
27°C24/31°C
28°C25/32°C
28°C25/32°C
28°C25/32°C
29°C26/33°C
28°C26/32°C
27°C24/31°C
27°C23/32°C
27°C24/31°C
27°C25/30°C
28°C25/31°C
27°C24/32°C
25°C24/29°C
25°C21/30°C
27°C23/33°C
25°C22/30°C
27°C23/32°C
27°C25/31°C
25°C23/29°C
25°C22/30°C
25°C22/28°C
25°C19/31°C
26°C20/32°C
25°C21/29°C
23°C20/27°C
24°C20/28°C
25°C21/30°C
24°C23/27°C
22°C19/23°C
22°C18/25°C
--°C/°C
48AQI
43AQI
48AQI
45AQI
2025 Days Vs Air Quality
Goyang, Gyeonggi, South Korea
27%
70
67%
175
6%
16
Total number of days with different AQI categories in last 262 days in 2025 (103 days remaining)
Under WHO’s Safe Air Quality Limits: 27%
Health Risk Level:
Very high
In 2025, 27% of 262 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
Goyang, Gyeonggi, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
78AQI
61AQI
62AQI
62AQI
76AQI
105AQI
62AQI
76AQI
47AQI
61AQI
65AQI
74AQI
96AQI
109AQI
57AQI
82AQI
76AQI
84AQI
82AQI
134AQI
138AQI
148AQI
115AQI
111AQI
67AQI
54AQI
67AQI
61AQI
61AQI
47AQI
72AQI
82AQI
73AQI
53AQI
48AQI
42AQI
54AQI
49AQI
44AQI
49AQI
57AQI
80AQI
85AQI
53AQI
95AQI
59AQI
112AQI
49AQI
63AQI
46AQI
55AQI
53AQI
58AQI
54AQI
56AQI
55AQI
69AQI
60AQI
87AQI
107AQI
90AQI
59AQI
51AQI
40AQI
72AQI
97AQI
87AQI
100AQI
118AQI
105AQI
96AQI
87AQI
75AQI
61AQI
70AQI
65AQI
73AQI
79AQI
92AQI
108AQI
113AQI
121AQI
120AQI
136AQI
96AQI
97AQI
58AQI
49AQI
43AQI
57AQI
77AQI
75AQI
76AQI
78AQI
58AQI
65AQI
72AQI
72AQI
75AQI
76AQI
87AQI
66AQI
59AQI
44AQI
56AQI
63AQI
72AQI
78AQI
48AQI
57AQI
57AQI
44AQI
39AQI
66AQI
65AQI
58AQI
49AQI
62AQI
69AQI
59AQI
61AQI
52AQI
49AQI
51AQI
52AQI
42AQI
58AQI
64AQI
54AQI
58AQI
80AQI
77AQI
78AQI
74AQI
69AQI
60AQI
53AQI
58AQI
62AQI
45AQI
48AQI
54AQI
62AQI
49AQI
51AQI
71AQI
87AQI
93AQI
84AQI
84AQI
95AQI
89AQI
100AQI
77AQI
60AQI
60AQI
61AQI
71AQI
60AQI
66AQI
56AQI
59AQI
66AQI
75AQI
70AQI
61AQI
68AQI
73AQI
74AQI
71AQI
53AQI
61AQI
71AQI
73AQI
65AQI
54AQI
56AQI
65AQI
65AQI
54AQI
50AQI
46AQI
44AQI
52AQI
53AQI
51AQI
55AQI
69AQI
68AQI
59AQI
54AQI
51AQI
50AQI
62AQI
52AQI
45AQI
52AQI
41AQI
43AQI
38AQI
41AQI
41AQI
38AQI
39AQI
49AQI
57AQI
56AQI
51AQI
66AQI
68AQI
67AQI
66AQI
59AQI
61AQI
61AQI
50AQI
51AQI
46AQI
47AQI
59AQI
55AQI
51AQI
58AQI
51AQI
41AQI
40AQI
39AQI
36AQI
41AQI
51AQI
45AQI
46AQI
45AQI
46AQI
48AQI
50AQI
47AQI
44AQI
48AQI
50AQI
45AQI
44AQI
50AQI
40AQI
48AQI
52AQI
41AQI
42AQI
40AQI
44AQI
49AQI
52AQI
50AQI
52AQI
51AQI
41AQI
42AQI
47AQI
44AQI
38AQI
37AQI
80AQI
62AQI
85AQI
64AQI
64AQI
66AQI
52AQI
49AQI
45AQI
No. of days
202564AQI
Highest AQI recorded in
March85AQI
Lowest AQI recorded in
September45AQI
202463AQI
Highest AQI recorded in
January79AQI
Lowest AQI recorded in
September43AQI
202368AQI
Highest AQI recorded in
March91AQI
Lowest AQI recorded in
September49AQI
202267AQI
Highest AQI recorded in
February84AQI
Lowest AQI recorded in
August30AQI
202169AQI
Highest AQI recorded in
March95AQI
Lowest AQI recorded in
September39AQI
202063AQI
Highest AQI recorded in
December80AQI
Lowest AQI recorded in
September47AQI
Most & Least Polluted Years Over the Last 6 Years
Goyang's annual 2025 AQI (64) shows an average percentage change of -3.4% (improved AQI) compared to previous years: 2020 (63), 2021 (69), 2022 (67), 2023 (68), 2024 (63).