Otomaru, Ashiya, Fukuoka, 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
Otomaru, Ashiya, Fukuoka, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (9th August ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 1st highest AQI at 50 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 9th Aug - 10th Aug 2025
Otomaru, Ashiya, Fukuoka, Japan
5 AM9th Aug 2025
7 PM
4 AM10th Aug 2025
AQI
AQI
51AQI
19AQI
In the last 24 hours,
Otomaru's AQI reached its highest point of 51 at 7 AM during the Night, while the lowest point, 19, was recorded at 7 PM during the Night between 9th Aug and 10th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Otomaru, Ashiya, Fukuoka, Japan
28°C26/32°C
28°C25/32°C
28°C26/33°C
25°C23/26°C
26°C23/30°C
27°C24/31°C
28°C24/34°C
24°C24/25°C
26°C24/31°C
28°C24/32°C
28°C25/33°C
28°C25/32°C
28°C24/32°C
28°C24/33°C
29°C26/33°C
28°C26/32°C
28°C26/32°C
29°C25/33°C
29°C25/34°C
29°C24/34°C
29°C24/34°C
29°C26/33°C
28°C25/32°C
29°C25/35°C
29°C26/32°C
30°C27/34°C
31°C27/35°C
28°C26/31°C
27°C26/31°C
--°C/°C
--°C/°C
45AQI
36AQI
44AQI
39AQI
2025 Days Vs Air Quality
Otomaru, Ashiya, Fukuoka, Japan
83%
183
17%
38
Total number of days with different AQI categories in last 221 days in 2025 (144 days remaining)
Under WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% of 221 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
Otomaru, Ashiya, Fukuoka, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
34AQI
37AQI
33AQI
37AQI
36AQI
57AQI
30AQI
42AQI
29AQI
31AQI
32AQI
31AQI
40AQI
47AQI
41AQI
40AQI
53AQI
49AQI
52AQI
61AQI
72AQI
83AQI
78AQI
74AQI
50AQI
44AQI
42AQI
36AQI
34AQI
41AQI
49AQI
46AQI
36AQI
50AQI
32AQI
43AQI
30AQI
42AQI
30AQI
34AQI
32AQI
44AQI
40AQI
35AQI
43AQI
31AQI
44AQI
39AQI
37AQI
34AQI
32AQI
34AQI
39AQI
40AQI
38AQI
39AQI
57AQI
65AQI
70AQI
66AQI
52AQI
46AQI
37AQI
35AQI
36AQI
34AQI
39AQI
44AQI
48AQI
49AQI
57AQI
55AQI
46AQI
36AQI
33AQI
47AQI
47AQI
44AQI
57AQI
57AQI
69AQI
68AQI
62AQI
60AQI
48AQI
43AQI
48AQI
41AQI
38AQI
37AQI
36AQI
34AQI
33AQI
34AQI
36AQI
35AQI
36AQI
37AQI
42AQI
39AQI
45AQI
41AQI
40AQI
38AQI
33AQI
40AQI
36AQI
40AQI
41AQI
36AQI
37AQI
36AQI
32AQI
34AQI
44AQI
38AQI
41AQI
37AQI
40AQI
41AQI
39AQI
38AQI
40AQI
36AQI
37AQI
32AQI
33AQI
36AQI
32AQI
35AQI
39AQI
46AQI
47AQI
52AQI
49AQI
49AQI
37AQI
44AQI
47AQI
39AQI
37AQI
37AQI
38AQI
34AQI
33AQI
34AQI
36AQI
40AQI
38AQI
38AQI
35AQI
41AQI
44AQI
34AQI
40AQI
38AQI
42AQI
48AQI
52AQI
42AQI
33AQI
36AQI
39AQI
36AQI
33AQI
31AQI
32AQI
32AQI
42AQI
40AQI
41AQI
36AQI
28AQI
30AQI
31AQI
32AQI
40AQI
41AQI
37AQI
37AQI
47AQI
59AQI
73AQI
73AQI
70AQI
62AQI
55AQI
55AQI
60AQI
68AQI
71AQI
63AQI
55AQI
48AQI
43AQI
50AQI
57AQI
55AQI
41AQI
39AQI
35AQI
35AQI
42AQI
39AQI
31AQI
27AQI
25AQI
24AQI
25AQI
26AQI
27AQI
32AQI
47AQI
47AQI
48AQI
45AQI
44AQI
46AQI
53AQI
47AQI
50AQI
46AQI
41AQI
48AQI
38AQI
39AQI
38AQI
47AQI
47AQI
No. of days
202543AQI
Highest AQI recorded in
March48AQI
Lowest AQI recorded in
April38AQI
202437AQI
Highest AQI recorded in
September48AQI
Lowest AQI recorded in
July27AQI
202344AQI
Highest AQI recorded in
November45AQI
Lowest AQI recorded in
December44AQI
20203AQI
Highest AQI recorded in
September19AQI
Lowest AQI recorded in
August0AQI
Most & Least Polluted Years Over the Last 4 Years
Otomaru's annual 2025 AQI (43) shows an average percentage change of 464.2% (worsened AQI) compared to previous years: 2020 (3), 2023 (44), 2024 (37).