Hwasu Dong, 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
Hwasu Dong, Gyeonggi, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (17th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 43 of Good air quality, showing improvement over 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Hwasu Dong, Gyeonggi, South Korea
6 AM17th Sep 2025
6 PM
5 AM18th Sep 2025
54AQI
18AQI
51AQI
24AQI
In the last 24 hours,
Hwasu Dong's AQI reached its highest point of 54 at 6 AM during the Day, while the lowest point, 18, was recorded at 4 PM during the Day between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Hwasu Dong, Gyeonggi, South Korea
27°C23/30°C
27°C23/31°C
27°C24/32°C
27°C24/32°C
27°C24/32°C
28°C24/33°C
28°C24/33°C
26°C23/29°C
25°C21/30°C
26°C22/31°C
27°C24/31°C
27°C24/31°C
27°C23/32°C
25°C23/29°C
24°C21/29°C
25°C20/31°C
23°C22/26°C
26°C22/31°C
26°C23/30°C
25°C21/28°C
23°C20/28°C
23°C20/26°C
23°C19/30°C
24°C19/30°C
22°C20/25°C
23°C20/25°C
23°C21/27°C
24°C20/29°C
24°C21/28°C
22°C19/25°C
--°C/°C
48AQI
43AQI
48AQI
44AQI
2025 Days Vs Air Quality
Hwasu Dong, Gyeonggi, South Korea
27%
69
67%
175
6%
16
Total number of days with different AQI categories in last 261 days in 2025 (104 days remaining)
Under WHO’s Safe Air Quality Limits: 27%
Health Risk Level:
Very high
In 2025, 27% of 261 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
Hwasu Dong, Gyeonggi, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
74AQI
57AQI
58AQI
61AQI
66AQI
90AQI
53AQI
66AQI
42AQI
54AQI
55AQI
77AQI
89AQI
102AQI
54AQI
77AQI
71AQI
81AQI
81AQI
129AQI
127AQI
139AQI
102AQI
114AQI
71AQI
60AQI
67AQI
57AQI
59AQI
51AQI
73AQI
81AQI
95AQI
56AQI
53AQI
42AQI
53AQI
44AQI
40AQI
45AQI
53AQI
75AQI
74AQI
53AQI
87AQI
59AQI
112AQI
48AQI
60AQI
45AQI
53AQI
53AQI
56AQI
53AQI
54AQI
53AQI
66AQI
62AQI
80AQI
108AQI
82AQI
60AQI
49AQI
39AQI
77AQI
89AQI
86AQI
102AQI
114AQI
111AQI
104AQI
94AQI
79AQI
63AQI
75AQI
67AQI
78AQI
80AQI
95AQI
98AQI
111AQI
116AQI
114AQI
130AQI
98AQI
94AQI
62AQI
49AQI
46AQI
63AQI
76AQI
85AQI
89AQI
87AQI
81AQI
71AQI
76AQI
83AQI
79AQI
80AQI
93AQI
71AQI
65AQI
49AQI
61AQI
64AQI
70AQI
75AQI
50AQI
66AQI
58AQI
51AQI
39AQI
70AQI
56AQI
57AQI
42AQI
61AQI
69AQI
61AQI
61AQI
50AQI
49AQI
48AQI
55AQI
45AQI
54AQI
62AQI
54AQI
63AQI
73AQI
75AQI
78AQI
74AQI
65AQI
57AQI
52AQI
57AQI
61AQI
40AQI
48AQI
52AQI
65AQI
53AQI
51AQI
70AQI
84AQI
88AQI
84AQI
91AQI
94AQI
90AQI
91AQI
74AQI
60AQI
59AQI
59AQI
67AQI
59AQI
63AQI
53AQI
58AQI
68AQI
74AQI
70AQI
60AQI
63AQI
65AQI
68AQI
66AQI
51AQI
60AQI
67AQI
71AQI
66AQI
56AQI
58AQI
68AQI
63AQI
53AQI
49AQI
47AQI
49AQI
55AQI
54AQI
52AQI
54AQI
62AQI
69AQI
60AQI
56AQI
54AQI
54AQI
64AQI
58AQI
47AQI
55AQI
45AQI
48AQI
39AQI
44AQI
44AQI
43AQI
48AQI
52AQI
66AQI
60AQI
53AQI
66AQI
68AQI
70AQI
64AQI
59AQI
61AQI
60AQI
50AQI
51AQI
47AQI
49AQI
55AQI
57AQI
56AQI
60AQI
50AQI
41AQI
39AQI
38AQI
37AQI
41AQI
50AQI
47AQI
48AQI
47AQI
48AQI
49AQI
50AQI
46AQI
43AQI
49AQI
50AQI
44AQI
42AQI
46AQI
39AQI
47AQI
51AQI
44AQI
43AQI
37AQI
42AQI
47AQI
51AQI
50AQI
52AQI
49AQI
40AQI
42AQI
50AQI
47AQI
43AQI
76AQI
61AQI
85AQI
68AQI
63AQI
64AQI
55AQI
49AQI
46AQI
No. of days
202564AQI
Highest AQI recorded in
March85AQI
Lowest AQI recorded in
September46AQI
202465AQI
Highest AQI recorded in
January77AQI
Lowest AQI recorded in
September48AQI
202370AQI
Highest AQI recorded in
March92AQI
Lowest AQI recorded in
September53AQI
202267AQI
Highest AQI recorded in
February83AQI
Lowest AQI recorded in
August34AQI
202169AQI
Highest AQI recorded in
March99AQI
Lowest AQI recorded in
September41AQI
202061AQI
Highest AQI recorded in
December78AQI
Lowest AQI recorded in
August47AQI
Most & Least Polluted Years Over the Last 6 Years
Hwasu Dong's annual 2025 AQI (64) shows an average percentage change of -3.5% (improved AQI) compared to previous years: 2020 (61), 2021 (69), 2022 (67), 2023 (70), 2024 (65).