Ansan, Gyeonggi, South Korea Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
June Air Quality Analysis
Ansan, Gyeonggi, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (2nd June):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 64 of Moderate air quality, showing improvement over 2025 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Jun - 2nd Jun 2026
Ansan, Gyeonggi, South Korea
5 AM1st Jun 2026
7 PM
4 AM2nd Jun 2026
67AQI
45AQI
60AQI
32AQI
In the last 24 hours,
Ansan's AQI reached its highest point of 67 at 2 PM during the Day, while the lowest point, 32, was recorded at 8 PM during the Night between 1st Jun and 2nd Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Ansan, Gyeonggi, South Korea
14°C9/18°C
14°C10/19°C
16°C12/20°C
14°C11/18°C
15°C11/19°C
16°C13/20°C
17°C13/22°C
16°C14/20°C
16°C14/20°C
19°C14/23°C
22°C17/28°C
23°C18/28°C
22°C18/27°C
21°C18/25°C
22°C19/26°C
22°C19/24°C
18°C15/20°C
16°C15/17°C
19°C15/24°C
17°C15/20°C
21°C17/26°C
24°C19/28°C
24°C21/27°C
21°C20/25°C
20°C17/24°C
21°C16/26°C
21°C17/26°C
23°C19/28°C
23°C21/26°C
24°C20/28°C
59AQI
44AQI
58AQI
43AQI
2026 Days Vs Air Quality
Ansan, Gyeonggi, South Korea
38%
57
49%
74
13%
19
Total number of days with different AQI categories in last 153 days in 2026 (212 days remaining)
Under WHO’s Safe Air Quality Limits: 38%
Health Risk Level:
High
In 2026, 38% of 153 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
Ansan, Gyeonggi, South Korea
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI (US)
39AQI (US)
56AQI (US)
81AQI (US)
55AQI (US)
58AQI (US)
59AQI (US)
27AQI (US)
45AQI (US)
60AQI (US)
30AQI (US)
40AQI (US)
42AQI (US)
34AQI (US)
85AQI (US)
124AQI (US)
121AQI (US)
87AQI (US)
62AQI (US)
36AQI (US)
37AQI (US)
27AQI (US)
53AQI (US)
49AQI (US)
28AQI (US)
52AQI (US)
58AQI (US)
34AQI (US)
44AQI (US)
60AQI (US)
60AQI (US)
64AQI (US)
71AQI (US)
55AQI (US)
113AQI (US)
124AQI (US)
63AQI (US)
35AQI (US)
49AQI (US)
44AQI (US)
89AQI (US)
113AQI (US)
113AQI (US)
135AQI (US)
141AQI (US)
108AQI (US)
47AQI (US)
45AQI (US)
47AQI (US)
44AQI (US)
78AQI (US)
94AQI (US)
50AQI (US)
29AQI (US)
35AQI (US)
58AQI (US)
45AQI (US)
27AQI (US)
41AQI (US)
36AQI (US)
15AQI (US)
22AQI (US)
68AQI (US)
98AQI (US)
72AQI (US)
47AQI (US)
55AQI (US)
96AQI (US)
87AQI (US)
88AQI (US)
108AQI (US)
46AQI (US)
56AQI (US)
92AQI (US)
131AQI (US)
145AQI (US)
109AQI (US)
46AQI (US)
57AQI (US)
96AQI (US)
91AQI (US)
115AQI (US)
107AQI (US)
91AQI (US)
94AQI (US)
118AQI (US)
95AQI (US)
98AQI (US)
89AQI (US)
65AQI (US)
77AQI (US)
97AQI (US)
122AQI (US)
54AQI (US)
78AQI (US)
55AQI (US)
26AQI (US)
48AQI (US)
41AQI (US)
39AQI (US)
75AQI (US)
76AQI (US)
73AQI (US)
91AQI (US)
127AQI (US)
59AQI (US)
54AQI (US)
70AQI (US)
63AQI (US)
67AQI (US)
47AQI (US)
40AQI (US)
61AQI (US)
60AQI (US)
48AQI (US)
36AQI (US)
45AQI (US)
51AQI (US)
48AQI (US)
107AQI (US)
48AQI (US)
26AQI (US)
44AQI (US)
33AQI (US)
41AQI (US)
37AQI (US)
31AQI (US)
33AQI (US)
37AQI (US)
45AQI (US)
61AQI (US)
78AQI (US)
77AQI (US)
65AQI (US)
56AQI (US)
53AQI (US)
63AQI (US)
67AQI (US)
77AQI (US)
72AQI (US)
70AQI (US)
65AQI (US)
48AQI (US)
33AQI (US)
36AQI (US)
59AQI (US)
64AQI (US)
54AQI (US)
55AQI (US)
64AQI (US)
54AQI (US)
70AQI (US)
82AQI (US)
64AQI (US)
54AQI (US)
60AQI (US)
No. of days
202665AQI (US)
Highest AQI (US) recorded in
March82AQI (US)
Lowest AQI (US) recorded in
May54AQI (US)
202562AQI (US)
Highest AQI (US) recorded in
March84AQI (US)
Lowest AQI (US) recorded in
September43AQI (US)
202462AQI (US)
Highest AQI (US) recorded in
January78AQI (US)
Lowest AQI (US) recorded in
September42AQI (US)
202368AQI (US)
Highest AQI (US) recorded in
March93AQI (US)
Lowest AQI (US) recorded in
September49AQI (US)
202267AQI (US)
Highest AQI (US) recorded in
January87AQI (US)
Lowest AQI (US) recorded in
August34AQI (US)
202168AQI (US)
Highest AQI (US) recorded in
March99AQI (US)
Lowest AQI (US) recorded in
September39AQI (US)
202061AQI (US)
Highest AQI (US) recorded in
December79AQI (US)
Lowest AQI (US) recorded in
September44AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Ansan's annual 2026 AQI (US) (65) shows an average percentage change of 0.7% (worsened AQI (US)) compared to previous years: 2020 (61), 2021 (68), 2022 (67), 2023 (68), 2024 (62), 2025 (62).