Hoengseong-gun, Gangwon-do, 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
Hoengseong-gun, Gangwon-do, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (16th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 49 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Hoengseong-gun, Gangwon-do, South Korea
5 AM17th Sep 2025
6 PM
4 AM18th Sep 2025
AQI
AQI
52AQI
20AQI
In the last 24 hours,
Hoengseong-gun's AQI reached its highest point of 52 at 8 AM during the Night, while the lowest point, 20, was recorded at 5 PM during the Night between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Hoengseong-gun, Gangwon-do, South Korea
24°C20/30°C
25°C20/31°C
26°C20/33°C
27°C22/33°C
26°C20/33°C
26°C20/32°C
25°C20/33°C
23°C20/29°C
23°C17/31°C
24°C18/31°C
24°C20/30°C
24°C20/29°C
24°C19/32°C
23°C19/27°C
23°C19/29°C
23°C16/32°C
20°C18/25°C
23°C17/31°C
23°C19/28°C
22°C19/29°C
21°C15/29°C
20°C17/25°C
20°C14/30°C
20°C12/30°C
19°C14/26°C
19°C16/23°C
20°C16/26°C
23°C17/29°C
22°C17/27°C
--°C/°C
--°C/°C
48AQI
43AQI
49AQI
45AQI
2025 Days Vs Air Quality
Hoengseong-gun, Gangwon-do, South Korea
65%
72
35%
39
Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)
Under WHO’s Safe Air Quality Limits: 65%
Health Risk Level:
Moderate
In 2025, 65% of 260 days were within WHO’s safe air quality limits, and 35% exceeded them. The risk of health issues is Moderate, particularly for individuals with respiratory or heart conditions.
Annual Air Quality Insights
Hoengseong-gun, Gangwon-do, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
62AQI
47AQI
49AQI
58AQI
74AQI
61AQI
48AQI
51AQI
55AQI
67AQI
58AQI
62AQI
62AQI
57AQI
58AQI
59AQI
46AQI
56AQI
53AQI
56AQI
62AQI
61AQI
51AQI
49AQI
53AQI
55AQI
50AQI
44AQI
48AQI
54AQI
53AQI
50AQI
46AQI
42AQI
39AQI
46AQI
48AQI
49AQI
47AQI
53AQI
55AQI
51AQI
52AQI
47AQI
47AQI
50AQI
44AQI
41AQI
46AQI
40AQI
39AQI
35AQI
35AQI
38AQI
34AQI
34AQI
40AQI
48AQI
40AQI
38AQI
42AQI
49AQI
48AQI
48AQI
56AQI
60AQI
63AQI
55AQI
54AQI
46AQI
45AQI
50AQI
53AQI
45AQI
51AQI
49AQI
42AQI
43AQI
49AQI
49AQI
43AQI
51AQI
48AQI
47AQI
48AQI
49AQI
49AQI
52AQI
51AQI
46AQI
48AQI
51AQI
48AQI
48AQI
49AQI
41AQI
48AQI
48AQI
39AQI
41AQI
40AQI
42AQI
47AQI
51AQI
48AQI
49AQI
49AQI
46AQI
46AQI
47AQI
49AQI
53AQI
55AQI
44AQI
50AQI
46AQI
No. of days
202549AQI
Highest AQI recorded in
June55AQI
Lowest AQI recorded in
July44AQI
Most & Least Polluted Years Over the Last 1 Years
Hoengseong-gun's annual 2025 AQI (49) shows an average percentage change of NaN% (improved AQI) compared to previous years: .