Arao, Kumamoto, Japan 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
Arao, Kumamoto, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (18th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 48 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Aug - 20th Aug 2025
Arao, Kumamoto, Japan
5 AM19th Aug 2025
7 PM
4 AM20th Aug 2025
71AQI
45AQI
54AQI
43AQI
In the last 24 hours,
Arao's AQI reached its highest point of 71 at 11 AM during the Day, while the lowest point, 43, was recorded at 2 AM during the Night between 19th Aug and 20th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Arao, Kumamoto, Japan
29°C26/33°C
30°C26/34°C
30°C26/35°C
30°C26/36°C
30°C26/36°C
30°C27/35°C
30°C27/35°C
31°C26/36°C
31°C26/36°C
31°C26/36°C
31°C25/36°C
31°C27/35°C
31°C27/37°C
30°C27/34°C
29°C27/33°C
30°C27/33°C
30°C27/34°C
27°C26/30°C
26°C25/28°C
25°C25/26°C
26°C26/27°C
26°C25/26°C
27°C25/30°C
28°C26/32°C
29°C26/32°C
30°C26/34°C
30°C26/34°C
29°C27/32°C
28°C25/32°C
29°C26/32°C
--°C/°C
40AQI
33AQI
38AQI
36AQI
2025 Days Vs Air Quality
Arao, Kumamoto, Japan
71%
163
29%
67
Total number of days with different AQI categories in last 232 days in 2025 (133 days remaining)
Under WHO’s Safe Air Quality Limits: 71%
Health Risk Level:
Low
In 2025, 71% of 232 days were within WHO’s safe air quality limits. The risk of health issues is Low, but the long-term effects, especially on vulnerable individuals, remain uncertain.
Annual Air Quality Insights
Arao, Kumamoto, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
38AQI
48AQI
38AQI
38AQI
42AQI
59AQI
36AQI
46AQI
30AQI
36AQI
33AQI
39AQI
44AQI
48AQI
47AQI
44AQI
56AQI
57AQI
60AQI
64AQI
79AQI
84AQI
80AQI
79AQI
51AQI
47AQI
44AQI
39AQI
35AQI
40AQI
51AQI
44AQI
38AQI
49AQI
32AQI
44AQI
32AQI
40AQI
31AQI
34AQI
32AQI
46AQI
41AQI
37AQI
46AQI
34AQI
48AQI
43AQI
38AQI
39AQI
37AQI
36AQI
42AQI
41AQI
40AQI
41AQI
45AQI
68AQI
61AQI
61AQI
43AQI
38AQI
29AQI
31AQI
31AQI
35AQI
45AQI
46AQI
53AQI
50AQI
55AQI
56AQI
41AQI
36AQI
33AQI
52AQI
46AQI
43AQI
56AQI
56AQI
66AQI
64AQI
53AQI
65AQI
63AQI
50AQI
64AQI
55AQI
45AQI
49AQI
49AQI
41AQI
42AQI
42AQI
48AQI
47AQI
46AQI
42AQI
57AQI
45AQI
58AQI
56AQI
52AQI
58AQI
36AQI
52AQI
46AQI
52AQI
53AQI
43AQI
47AQI
37AQI
30AQI
37AQI
51AQI
51AQI
52AQI
42AQI
53AQI
53AQI
48AQI
46AQI
44AQI
42AQI
44AQI
37AQI
38AQI
51AQI
33AQI
42AQI
47AQI
54AQI
58AQI
60AQI
60AQI
66AQI
44AQI
52AQI
54AQI
42AQI
32AQI
37AQI
43AQI
28AQI
34AQI
38AQI
45AQI
51AQI
50AQI
49AQI
48AQI
57AQI
54AQI
36AQI
48AQI
49AQI
53AQI
65AQI
68AQI
38AQI
34AQI
43AQI
43AQI
46AQI
32AQI
32AQI
34AQI
32AQI
35AQI
39AQI
32AQI
29AQI
23AQI
20AQI
26AQI
27AQI
27AQI
29AQI
30AQI
37AQI
51AQI
71AQI
93AQI
83AQI
84AQI
64AQI
53AQI
52AQI
59AQI
69AQI
55AQI
43AQI
40AQI
39AQI
37AQI
46AQI
57AQI
57AQI
36AQI
35AQI
33AQI
34AQI
47AQI
47AQI
33AQI
27AQI
25AQI
23AQI
25AQI
26AQI
29AQI
33AQI
44AQI
47AQI
48AQI
42AQI
42AQI
44AQI
46AQI
38AQI
34AQI
41AQI
30AQI
34AQI
39AQI
41AQI
41AQI
44AQI
41AQI
48AQI
49AQI
41AQI
49AQI
47AQI
46AQI
39AQI
47AQI
41AQI
No. of days
202545AQI
Highest AQI recorded in
January49AQI
Lowest AQI recorded in
June39AQI
202450AQI
Highest AQI recorded in
August74AQI
Lowest AQI recorded in
July37AQI
202346AQI
Highest AQI recorded in
April54AQI
Lowest AQI recorded in
August33AQI
202246AQI
Highest AQI recorded in
May54AQI
Lowest AQI recorded in
August35AQI
202145AQI
Highest AQI recorded in
March53AQI
Lowest AQI recorded in
August30AQI
202045AQI
Highest AQI recorded in
August51AQI
Lowest AQI recorded in
July28AQI
Most & Least Polluted Years Over the Last 6 Years
Arao's annual 2025 AQI (45) shows an average percentage change of -2.2% (improved AQI) compared to previous years: 2020 (45), 2021 (45), 2022 (46), 2023 (46), 2024 (50).