Sung, Incheon, Incheon, South Korea Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
August Air Quality Analysis
Sung, Incheon, Incheon, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (20th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 49 of Good air quality, showing improvement over 2024 and 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 21st Aug - 22nd Aug 2025
Sung, Incheon, Incheon, South Korea
5 AM21st Aug 2025
7 PM
4 AM22nd Aug 2025
AQI
AQI
51AQI
45AQI
In the last 24 hours,
Sung's AQI reached its highest point of 51 at 6 AM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 21st Aug and 22nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Sung, Incheon, Incheon, South Korea
27°C25/29°C
27°C25/29°C
28°C26/31°C
29°C27/31°C
29°C28/31°C
28°C26/30°C
28°C27/30°C
29°C26/31°C
28°C27/29°C
29°C27/31°C
28°C27/30°C
27°C26/28°C
27°C25/30°C
27°C25/29°C
26°C25/28°C
26°C25/28°C
26°C24/28°C
25°C25/26°C
26°C24/30°C
26°C25/28°C
27°C24/30°C
25°C24/26°C
26°C25/27°C
27°C25/29°C
27°C26/28°C
27°C26/29°C
27°C26/29°C
27°C26/29°C
27°C25/30°C
--°C/°C
--°C/°C
60AQI
53AQI
57AQI
53AQI
2025 Days Vs Air Quality
Sung, Incheon, Incheon, South Korea
20%
47
73%
170
6%
15
Total number of days with different AQI categories in last 233 days in 2025 (132 days remaining)
Under WHO’s Safe Air Quality Limits: 20%
Health Risk Level:
Very high
In 2025, 20% of 233 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
Sung, Incheon, Incheon, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
71AQI
54AQI
54AQI
58AQI
67AQI
95AQI
52AQI
71AQI
42AQI
55AQI
57AQI
76AQI
87AQI
102AQI
53AQI
80AQI
71AQI
81AQI
72AQI
129AQI
128AQI
143AQI
96AQI
113AQI
66AQI
58AQI
66AQI
62AQI
60AQI
49AQI
75AQI
85AQI
86AQI
55AQI
52AQI
42AQI
53AQI
46AQI
41AQI
46AQI
54AQI
78AQI
78AQI
55AQI
90AQI
59AQI
109AQI
50AQI
62AQI
47AQI
56AQI
54AQI
58AQI
55AQI
56AQI
55AQI
65AQI
60AQI
75AQI
116AQI
87AQI
63AQI
50AQI
40AQI
77AQI
96AQI
83AQI
109AQI
124AQI
120AQI
98AQI
102AQI
74AQI
63AQI
72AQI
68AQI
78AQI
78AQI
91AQI
98AQI
110AQI
113AQI
107AQI
125AQI
89AQI
93AQI
58AQI
48AQI
42AQI
60AQI
73AQI
82AQI
86AQI
80AQI
67AQI
63AQI
71AQI
72AQI
77AQI
79AQI
95AQI
69AQI
62AQI
46AQI
55AQI
57AQI
67AQI
71AQI
44AQI
59AQI
52AQI
45AQI
37AQI
66AQI
59AQI
56AQI
42AQI
58AQI
70AQI
58AQI
61AQI
48AQI
47AQI
47AQI
52AQI
43AQI
54AQI
59AQI
52AQI
58AQI
74AQI
74AQI
77AQI
70AQI
66AQI
58AQI
51AQI
55AQI
59AQI
38AQI
41AQI
51AQI
61AQI
49AQI
49AQI
70AQI
83AQI
95AQI
82AQI
95AQI
90AQI
86AQI
86AQI
71AQI
54AQI
55AQI
57AQI
65AQI
57AQI
61AQI
49AQI
57AQI
68AQI
67AQI
66AQI
58AQI
67AQI
65AQI
70AQI
69AQI
45AQI
62AQI
72AQI
77AQI
64AQI
55AQI
55AQI
68AQI
62AQI
57AQI
54AQI
45AQI
48AQI
55AQI
55AQI
53AQI
57AQI
72AQI
72AQI
68AQI
57AQI
52AQI
51AQI
63AQI
52AQI
42AQI
51AQI
38AQI
45AQI
36AQI
41AQI
43AQI
43AQI
45AQI
54AQI
66AQI
63AQI
54AQI
72AQI
70AQI
78AQI
67AQI
60AQI
63AQI
61AQI
52AQI
52AQI
50AQI
49AQI
57AQI
60AQI
55AQI
60AQI
55AQI
44AQI
41AQI
41AQI
38AQI
41AQI
50AQI
48AQI
49AQI
76AQI
62AQI
85AQI
64AQI
62AQI
63AQI
55AQI
51AQI
No. of days
202565AQI
Highest AQI recorded in
March85AQI
Lowest AQI recorded in
August51AQI
202462AQI
Highest AQI recorded in
January77AQI
Lowest AQI recorded in
September43AQI
202365AQI
Highest AQI recorded in
March90AQI
Lowest AQI recorded in
September48AQI
202266AQI
Highest AQI recorded in
February90AQI
Lowest AQI recorded in
August36AQI
202168AQI
Highest AQI recorded in
March99AQI
Lowest AQI recorded in
September35AQI
202061AQI
Highest AQI recorded in
December81AQI
Lowest AQI recorded in
July44AQI
Most & Least Polluted Years Over the Last 6 Years
Sung's annual 2025 AQI (65) shows an average percentage change of 1.6% (worsened AQI) compared to previous years: 2020 (61), 2021 (68), 2022 (66), 2023 (65), 2024 (62).