Sinjeong, Ulsan, Ulsan, 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
Sinjeong, Ulsan, Ulsan, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (24th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 55 of Moderate air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 24th Aug - 25th Aug 2025
Sinjeong, Ulsan, Ulsan, South Korea
5 AM24th Aug 2025
7 PM
4 AM25th Aug 2025
78AQI
51AQI
57AQI
50AQI
In the last 24 hours,
Sinjeong's AQI reached its highest point of 78 at 1 PM during the Day, while the lowest point, 50, was recorded at 3 AM during the Night between 24th Aug and 25th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Sinjeong, Ulsan, Ulsan, South Korea
27°C24/31°C
27°C24/32°C
27°C23/33°C
27°C23/32°C
27°C23/32°C
27°C23/32°C
27°C23/33°C
28°C23/34°C
27°C25/31°C
29°C25/33°C
28°C25/33°C
28°C26/32°C
27°C22/32°C
25°C22/30°C
23°C19/30°C
24°C19/29°C
23°C20/27°C
20°C19/22°C
26°C22/31°C
28°C24/33°C
28°C25/32°C
29°C25/34°C
29°C24/34°C
28°C24/33°C
28°C25/33°C
28°C24/33°C
28°C24/33°C
28°C25/32°C
29°C25/34°C
29°C25/34°C
--°C/°C
56AQI
52AQI
51AQI
51AQI
2025 Days Vs Air Quality
Sinjeong, Ulsan, Ulsan, South Korea
26%
61
72%
170
2%
5
Total number of days with different AQI categories in last 237 days in 2025 (128 days remaining)
Under WHO’s Safe Air Quality Limits: 26%
Health Risk Level:
Very high
In 2025, 26% of 237 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
Sinjeong, Ulsan, Ulsan, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
53AQI
62AQI
47AQI
47AQI
56AQI
88AQI
48AQI
57AQI
40AQI
43AQI
47AQI
60AQI
63AQI
77AQI
49AQI
56AQI
73AQI
77AQI
74AQI
99AQI
125AQI
114AQI
109AQI
82AQI
63AQI
52AQI
55AQI
40AQI
42AQI
54AQI
58AQI
61AQI
58AQI
55AQI
43AQI
42AQI
39AQI
49AQI
38AQI
43AQI
47AQI
62AQI
59AQI
43AQI
67AQI
51AQI
73AQI
46AQI
46AQI
42AQI
45AQI
44AQI
50AQI
48AQI
51AQI
48AQI
81AQI
74AQI
75AQI
73AQI
83AQI
49AQI
48AQI
38AQI
40AQI
51AQI
52AQI
70AQI
62AQI
82AQI
78AQI
63AQI
58AQI
47AQI
50AQI
59AQI
59AQI
74AQI
74AQI
82AQI
72AQI
102AQI
86AQI
121AQI
99AQI
87AQI
81AQI
59AQI
52AQI
68AQI
65AQI
55AQI
54AQI
72AQI
60AQI
65AQI
66AQI
73AQI
81AQI
83AQI
84AQI
84AQI
67AQI
69AQI
55AQI
70AQI
66AQI
81AQI
61AQI
60AQI
57AQI
65AQI
48AQI
69AQI
70AQI
62AQI
60AQI
62AQI
63AQI
69AQI
59AQI
53AQI
59AQI
52AQI
51AQI
56AQI
56AQI
63AQI
52AQI
38AQI
55AQI
57AQI
69AQI
71AQI
65AQI
63AQI
58AQI
61AQI
58AQI
53AQI
48AQI
56AQI
55AQI
41AQI
48AQI
58AQI
61AQI
68AQI
56AQI
52AQI
50AQI
73AQI
85AQI
77AQI
49AQI
52AQI
61AQI
58AQI
71AQI
62AQI
69AQI
57AQI
71AQI
64AQI
61AQI
65AQI
49AQI
55AQI
62AQI
63AQI
47AQI
44AQI
35AQI
46AQI
46AQI
49AQI
56AQI
65AQI
76AQI
62AQI
58AQI
54AQI
56AQI
64AQI
63AQI
63AQI
61AQI
66AQI
63AQI
60AQI
56AQI
56AQI
56AQI
57AQI
51AQI
53AQI
55AQI
54AQI
48AQI
42AQI
48AQI
45AQI
52AQI
64AQI
61AQI
54AQI
50AQI
51AQI
50AQI
52AQI
52AQI
53AQI
52AQI
57AQI
61AQI
56AQI
52AQI
50AQI
55AQI
57AQI
60AQI
50AQI
53AQI
44AQI
42AQI
46AQI
48AQI
47AQI
46AQI
54AQI
54AQI
49AQI
50AQI
55AQI
55AQI
55AQI
65AQI
53AQI
68AQI
67AQI
56AQI
60AQI
55AQI
52AQI
No. of days
202560AQI
Highest AQI recorded in
March68AQI
Lowest AQI recorded in
August52AQI
202452AQI
Highest AQI recorded in
April74AQI
Lowest AQI recorded in
October39AQI
202363AQI
Highest AQI recorded in
March78AQI
Lowest AQI recorded in
September42AQI
202258AQI
Highest AQI recorded in
May69AQI
Lowest AQI recorded in
September44AQI
202160AQI
Highest AQI recorded in
March74AQI
Lowest AQI recorded in
September38AQI
202054AQI
Highest AQI recorded in
June69AQI
Lowest AQI recorded in
July41AQI
Most & Least Polluted Years Over the Last 6 Years
Sinjeong's annual 2025 AQI (60) shows an average percentage change of 4.5% (worsened AQI) compared to previous years: 2020 (54), 2021 (60), 2022 (58), 2023 (63), 2024 (52).