Changwon-si, Gyeongsangnam-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
Changwon-si, Gyeongsangnam-do, South Korea
AQI Trends: Highest and Lowest
Same Day Analysis (20th September ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 34 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 20th Sep - 21st Sep 2025
Changwon-si, Gyeongsangnam-do, South Korea
6 AM20th Sep 2025
6 PM
5 AM21st Sep 2025
36AQI
26AQI
37AQI
24AQI
In the last 24 hours,
Changwon-si's AQI reached its highest point of 37 at 3 AM during the Night, while the lowest point, 24, was recorded at 8 PM during the Night between 20th Sep and 21st Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Changwon-si, Gyeongsangnam-do, South Korea
27°C23/33°C
28°C23/34°C
28°C23/34°C
27°C23/33°C
27°C24/33°C
27°C23/32°C
27°C23/31°C
27°C23/33°C
28°C23/34°C
26°C23/30°C
27°C23/31°C
27°C23/33°C
26°C22/31°C
26°C23/32°C
26°C23/31°C
27°C23/32°C
26°C24/31°C
25°C22/30°C
22°C20/27°C
23°C20/27°C
23°C20/28°C
23°C21/27°C
25°C23/29°C
25°C22/28°C
25°C22/31°C
26°C22/31°C
26°C23/31°C
23°C21/26°C
22°C20/25°C
22°C20/26°C
--°C/°C
44AQI
42AQI
44AQI
41AQI
2025 Days Vs Air Quality
Changwon-si, Gyeongsangnam-do, South Korea
55%
63
45%
52
Total number of days with different AQI categories in last 264 days in 2025 (101 days remaining)
Under WHO’s Safe Air Quality Limits: 55%
Health Risk Level:
Considerable
In 2025, 55% of 264 days were within WHO’s safe air quality limits, and 45% exceeded them. The risk of health issues is Considerable, with potential for conditions in sensitive individuals.
Annual Air Quality Insights
Changwon-si, Gyeongsangnam-do, South Korea
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
60AQI
62AQI
64AQI
69AQI
73AQI
66AQI
53AQI
54AQI
58AQI
52AQI
59AQI
59AQI
63AQI
52AQI
59AQI
60AQI
45AQI
50AQI
48AQI
47AQI
58AQI
55AQI
46AQI
38AQI
33AQI
44AQI
46AQI
46AQI
54AQI
62AQI
55AQI
55AQI
50AQI
51AQI
56AQI
63AQI
61AQI
56AQI
54AQI
57AQI
61AQI
56AQI
55AQI
57AQI
57AQI
57AQI
52AQI
51AQI
54AQI
53AQI
46AQI
42AQI
46AQI
43AQI
49AQI
57AQI
58AQI
49AQI
43AQI
39AQI
41AQI
39AQI
40AQI
46AQI
52AQI
58AQI
57AQI
55AQI
51AQI
50AQI
52AQI
54AQI
50AQI
43AQI
49AQI
40AQI
44AQI
43AQI
41AQI
41AQI
40AQI
50AQI
51AQI
48AQI
49AQI
54AQI
51AQI
50AQI
45AQI
41AQI
47AQI
52AQI
49AQI
45AQI
48AQI
39AQI
42AQI
48AQI
38AQI
40AQI
37AQI
40AQI
46AQI
38AQI
38AQI
40AQI
40AQI
37AQI
37AQI
48AQI
48AQI
37AQI
34AQI
33AQI
34AQI
62AQI
54AQI
51AQI
48AQI
40AQI
No. of days
202549AQI
Highest AQI recorded in
May62AQI
Lowest AQI recorded in
September40AQI
Most & Least Polluted Years Over the Last 1 Years
Changwon-si's annual 2025 AQI (49) shows an average percentage change of NaN% (improved AQI) compared to previous years: .