Opo Eup, Songnam, Gyeonggi, South Korea Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Opo Eup, Songnam, Gyeonggi, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (2nd October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 59 of Moderate air quality, showing improvement over 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Oct - 3rd Oct 2025
Opo Eup, Songnam, Gyeonggi, South Korea
6 AM2nd Oct 2025
6 PM
5 AM3rd Oct 2025
70AQI
52AQI
73AQI
44AQI
In the last 24 hours,
Opo Eup's AQI reached its highest point of 73 at 10 PM during the Night, while the lowest point, 44, was recorded at 2 AM during the Night between 2nd Oct and 3rd Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Opo Eup, Songnam, Gyeonggi, South Korea
26°C21/31°C
23°C21/27°C
26°C21/32°C
26°C23/31°C
25°C21/29°C
24°C20/30°C
24°C21/27°C
24°C18/30°C
24°C18/31°C
23°C20/27°C
22°C20/25°C
23°C20/28°C
24°C20/30°C
24°C21/27°C
21°C18/24°C
20°C18/24°C
18°C16/20°C
18°C16/20°C
20°C15/26°C
19°C16/24°C
21°C18/26°C
20°C18/23°C
21°C19/26°C
21°C17/27°C
22°C17/27°C
19°C17/19°C
19°C16/24°C
20°C16/25°C
20°C16/25°C
21°C17/26°C
--°C/°C
43AQI
36AQI
44AQI
39AQI
2025 Days Vs Air Quality
Opo Eup, Songnam, Gyeonggi, South Korea
32%
88
62%
170
6%
16
0.3%
1
Total number of days with different AQI categories in last 276 days in 2025 (89 days remaining)
Under WHO’s Safe Air Quality Limits: 32%
Health Risk Level:
High
In 2025, 32% of 276 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
Opo Eup, Songnam, Gyeonggi, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
78AQI
64AQI
64AQI
64AQI
79AQI
105AQI
60AQI
78AQI
47AQI
64AQI
62AQI
82AQI
97AQI
98AQI
58AQI
77AQI
90AQI
84AQI
100AQI
132AQI
144AQI
154AQI
126AQI
104AQI
71AQI
52AQI
63AQI
58AQI
61AQI
55AQI
72AQI
75AQI
77AQI
54AQI
53AQI
44AQI
58AQI
52AQI
50AQI
54AQI
59AQI
77AQI
82AQI
54AQI
93AQI
59AQI
120AQI
53AQI
63AQI
52AQI
59AQI
58AQI
60AQI
56AQI
63AQI
59AQI
76AQI
60AQI
87AQI
110AQI
82AQI
60AQI
49AQI
40AQI
68AQI
90AQI
86AQI
106AQI
116AQI
115AQI
109AQI
91AQI
79AQI
54AQI
71AQI
63AQI
64AQI
80AQI
93AQI
104AQI
110AQI
118AQI
122AQI
128AQI
90AQI
90AQI
64AQI
49AQI
47AQI
56AQI
79AQI
81AQI
76AQI
84AQI
70AQI
66AQI
68AQI
76AQI
67AQI
74AQI
81AQI
61AQI
60AQI
47AQI
53AQI
60AQI
64AQI
77AQI
49AQI
53AQI
50AQI
43AQI
37AQI
57AQI
66AQI
54AQI
42AQI
57AQI
65AQI
57AQI
57AQI
46AQI
49AQI
46AQI
51AQI
40AQI
55AQI
60AQI
48AQI
51AQI
65AQI
66AQI
72AQI
71AQI
64AQI
54AQI
41AQI
57AQI
59AQI
44AQI
50AQI
44AQI
61AQI
44AQI
48AQI
60AQI
73AQI
78AQI
74AQI
64AQI
69AQI
81AQI
89AQI
73AQI
54AQI
58AQI
59AQI
69AQI
60AQI
65AQI
55AQI
53AQI
55AQI
69AQI
53AQI
60AQI
61AQI
63AQI
68AQI
65AQI
51AQI
56AQI
61AQI
61AQI
57AQI
50AQI
53AQI
59AQI
59AQI
52AQI
50AQI
48AQI
43AQI
49AQI
47AQI
48AQI
51AQI
60AQI
64AQI
57AQI
53AQI
51AQI
48AQI
57AQI
51AQI
44AQI
50AQI
39AQI
42AQI
35AQI
39AQI
40AQI
38AQI
41AQI
44AQI
53AQI
49AQI
45AQI
56AQI
61AQI
58AQI
56AQI
59AQI
62AQI
61AQI
50AQI
52AQI
45AQI
51AQI
54AQI
55AQI
51AQI
56AQI
51AQI
39AQI
43AQI
42AQI
40AQI
40AQI
50AQI
44AQI
45AQI
47AQI
46AQI
48AQI
52AQI
50AQI
44AQI
50AQI
53AQI
47AQI
47AQI
50AQI
43AQI
49AQI
51AQI
37AQI
32AQI
38AQI
39AQI
46AQI
53AQI
49AQI
48AQI
48AQI
39AQI
42AQI
45AQI
42AQI
35AQI
29AQI
32AQI
28AQI
25AQI
27AQI
28AQI
30AQI
38AQI
52AQI
45AQI
31AQI
51AQI
53AQI
53AQI
59AQI
82AQI
65AQI
84AQI
62AQI
57AQI
61AQI
49AQI
49AQI
40AQI
56AQI
No. of days
202561AQI
Highest AQI recorded in
March84AQI
Lowest AQI recorded in
September40AQI
202460AQI
Highest AQI recorded in
January80AQI
Lowest AQI recorded in
September39AQI
202367AQI
Highest AQI recorded in
February95AQI
Lowest AQI recorded in
September44AQI
202268AQI
Highest AQI recorded in
February95AQI
Lowest AQI recorded in
August19AQI
202167AQI
Highest AQI recorded in
March96AQI
Lowest AQI recorded in
September35AQI
202062AQI
Highest AQI recorded in
December91AQI
Lowest AQI recorded in
September44AQI
Most & Least Polluted Years Over the Last 6 Years
Opo Eup's annual 2025 AQI (61) shows an average percentage change of -5.5% (improved AQI) compared to previous years: 2020 (62), 2021 (67), 2022 (68), 2023 (67), 2024 (60).