Willow, Paju, 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
Willow, Paju, Gyeonggi, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (27th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 39 of Good air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 28th Sep - 29th Sep 2025
Willow, Paju, Gyeonggi, South Korea
6 AM28th Sep 2025
6 PM
5 AM29th Sep 2025
AQI
AQI
55AQI
26AQI
In the last 24 hours,
Willow's AQI reached its highest point of 55 at 11 PM during the Night, while the lowest point, 26, was recorded at 11 AM during the Night between 28th Sep and 29th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Willow, Paju, Gyeonggi, South Korea
26°C23/30°C
26°C23/30°C
24°C22/27°C
24°C19/29°C
25°C21/30°C
23°C21/28°C
24°C20/30°C
25°C23/29°C
24°C20/27°C
22°C19/27°C
23°C19/28°C
22°C16/29°C
22°C17/29°C
22°C19/28°C
21°C19/24°C
22°C17/27°C
23°C19/28°C
23°C20/26°C
20°C18/22°C
20°C17/23°C
17°C16/21°C
17°C16/21°C
19°C14/24°C
18°C15/23°C
20°C17/26°C
19°C17/22°C
21°C18/25°C
20°C16/25°C
21°C17/26°C
--°C/°C
--°C/°C
45AQI
37AQI
45AQI
39AQI
2025 Days Vs Air Quality
Willow, Paju, Gyeonggi, South Korea
30%
81
66%
177
4%
12
Total number of days with different AQI categories in last 271 days in 2025 (94 days remaining)
Under WHO’s Safe Air Quality Limits: 30%
Health Risk Level:
High
In 2025, 30% of 271 days were within WHO’s safe air quality limits. The risk of health issues is High, with respiratory problems, heart disease, skin issues, and stress being more common, particularly among children and the elderly.
Annual Air Quality Insights
Willow, Paju, Gyeonggi, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
73AQI
56AQI
58AQI
62AQI
70AQI
100AQI
58AQI
70AQI
45AQI
58AQI
58AQI
71AQI
89AQI
96AQI
55AQI
77AQI
74AQI
78AQI
82AQI
126AQI
135AQI
140AQI
113AQI
99AQI
65AQI
49AQI
69AQI
64AQI
68AQI
54AQI
65AQI
76AQI
68AQI
56AQI
49AQI
43AQI
53AQI
54AQI
50AQI
56AQI
61AQI
84AQI
91AQI
58AQI
100AQI
63AQI
112AQI
55AQI
65AQI
53AQI
58AQI
57AQI
61AQI
59AQI
57AQI
62AQI
69AQI
65AQI
86AQI
99AQI
87AQI
59AQI
49AQI
42AQI
76AQI
97AQI
84AQI
99AQI
120AQI
102AQI
94AQI
79AQI
74AQI
60AQI
74AQI
69AQI
78AQI
80AQI
99AQI
111AQI
112AQI
120AQI
118AQI
135AQI
91AQI
100AQI
59AQI
53AQI
46AQI
56AQI
74AQI
75AQI
76AQI
76AQI
60AQI
63AQI
72AQI
71AQI
78AQI
72AQI
80AQI
67AQI
55AQI
45AQI
54AQI
63AQI
68AQI
69AQI
43AQI
52AQI
56AQI
39AQI
34AQI
62AQI
63AQI
58AQI
51AQI
61AQI
65AQI
58AQI
59AQI
50AQI
48AQI
51AQI
52AQI
43AQI
55AQI
59AQI
62AQI
51AQI
78AQI
71AQI
75AQI
68AQI
62AQI
57AQI
48AQI
58AQI
59AQI
48AQI
42AQI
51AQI
63AQI
49AQI
52AQI
66AQI
83AQI
85AQI
77AQI
77AQI
80AQI
79AQI
88AQI
69AQI
54AQI
55AQI
58AQI
66AQI
56AQI
61AQI
51AQI
56AQI
59AQI
66AQI
67AQI
58AQI
64AQI
66AQI
70AQI
71AQI
46AQI
56AQI
62AQI
66AQI
59AQI
48AQI
51AQI
62AQI
62AQI
49AQI
46AQI
39AQI
40AQI
52AQI
52AQI
49AQI
55AQI
71AQI
62AQI
59AQI
53AQI
47AQI
46AQI
61AQI
47AQI
41AQI
50AQI
36AQI
37AQI
34AQI
36AQI
37AQI
34AQI
34AQI
47AQI
53AQI
56AQI
52AQI
60AQI
57AQI
62AQI
59AQI
59AQI
62AQI
61AQI
49AQI
52AQI
46AQI
46AQI
54AQI
52AQI
48AQI
57AQI
53AQI
41AQI
41AQI
40AQI
36AQI
42AQI
51AQI
45AQI
45AQI
46AQI
45AQI
47AQI
51AQI
48AQI
44AQI
50AQI
50AQI
45AQI
44AQI
50AQI
40AQI
52AQI
54AQI
40AQI
38AQI
39AQI
45AQI
49AQI
54AQI
51AQI
53AQI
52AQI
42AQI
44AQI
47AQI
43AQI
37AQI
34AQI
35AQI
29AQI
27AQI
27AQI
30AQI
30AQI
39AQI
45AQI
39AQI
77AQI
65AQI
85AQI
62AQI
61AQI
61AQI
49AQI
48AQI
41AQI
No. of days
202561AQI
Highest AQI recorded in
March85AQI
Lowest AQI recorded in
September41AQI
202459AQI
Highest AQI recorded in
January94AQI
Lowest AQI recorded in
September29AQI
202368AQI
Highest AQI recorded in
February92AQI
Lowest AQI recorded in
August38AQI
202272AQI
Highest AQI recorded in
January93AQI
Lowest AQI recorded in
August34AQI
202171AQI
Highest AQI recorded in
March102AQI
Lowest AQI recorded in
September36AQI
202066AQI
Highest AQI recorded in
December91AQI
Lowest AQI recorded in
August45AQI
Most & Least Polluted Years Over the Last 6 Years
Willow's annual 2025 AQI (61) shows an average percentage change of -8.3% (improved AQI) compared to previous years: 2020 (66), 2021 (71), 2022 (72), 2023 (68), 2024 (59).