Yamaga, 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
Yamaga, Kumamoto, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (5th August):
On this day, AQI across the 4 years varied significantly: 2026 ranks 3rd highest AQI at 23 of Good air quality, showing improvement over 2025 and 2024 on the same day.
Day & Night AQI Trend: 4th Aug - 5th Aug 2026
Yamaga, Kumamoto, Japan
5 AM4th Aug 2026
7 PM
4 AM5th Aug 2026
72AQI
48AQI
40AQI
27AQI
In the last 24 hours,
Yamaga's AQI reached its highest point of 72 at 3 PM during the Day, while the lowest point, 27, was recorded at 4 AM during the Night between 4th Aug and 5th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Yamaga, Kumamoto, Japan
27°C24/30°C
27°C25/31°C
28°C24/31°C
28°C24/33°C
29°C25/34°C
30°C26/34°C
29°C26/32°C
28°C25/31°C
28°C26/30°C
27°C26/30°C
28°C26/31°C
29°C26/31°C
29°C26/33°C
29°C27/33°C
30°C27/33°C
30°C26/34°C
30°C27/33°C
30°C27/33°C
30°C27/35°C
31°C27/36°C
32°C28/36°C
30°C27/35°C
28°C27/29°C
30°C26/33°C
29°C26/34°C
30°C26/35°C
32°C27/37°C
32°C28/39°C
31°C28/36°C
31°C27/36°C
35AQI
28AQI
35AQI
31AQI
2026 Days Vs Air Quality
Yamaga, Kumamoto, Japan
81%
175
19%
42
Total number of days with different AQI categories in last 217 days in 2026 (148 days remaining)
Under WHO’s Safe Air Quality Limits: 81%
Health Risk Level:
Low
In 2026, 81% of 217 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
Yamaga, Kumamoto, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI (US)
25AQI (US)
31AQI (US)
47AQI (US)
56AQI (US)
39AQI (US)
50AQI (US)
43AQI (US)
33AQI (US)
41AQI (US)
33AQI (US)
30AQI (US)
44AQI (US)
45AQI (US)
54AQI (US)
50AQI (US)
62AQI (US)
66AQI (US)
74AQI (US)
49AQI (US)
14AQI (US)
28AQI (US)
40AQI (US)
55AQI (US)
31AQI (US)
25AQI (US)
44AQI (US)
39AQI (US)
40AQI (US)
46AQI (US)
22AQI (US)
50AQI (US)
51AQI (US)
41AQI (US)
44AQI (US)
41AQI (US)
43AQI (US)
38AQI (US)
22AQI (US)
41AQI (US)
40AQI (US)
41AQI (US)
50AQI (US)
52AQI (US)
56AQI (US)
37AQI (US)
60AQI (US)
33AQI (US)
24AQI (US)
65AQI (US)
45AQI (US)
50AQI (US)
31AQI (US)
36AQI (US)
46AQI (US)
30AQI (US)
15AQI (US)
41AQI (US)
49AQI (US)
40AQI (US)
30AQI (US)
13AQI (US)
56AQI (US)
54AQI (US)
52AQI (US)
52AQI (US)
49AQI (US)
56AQI (US)
53AQI (US)
46AQI (US)
60AQI (US)
45AQI (US)
46AQI (US)
62AQI (US)
63AQI (US)
45AQI (US)
54AQI (US)
25AQI (US)
47AQI (US)
40AQI (US)
48AQI (US)
18AQI (US)
51AQI (US)
23AQI (US)
21AQI (US)
60AQI (US)
81AQI (US)
78AQI (US)
46AQI (US)
20AQI (US)
21AQI (US)
55AQI (US)
52AQI (US)
43AQI (US)
45AQI (US)
59AQI (US)
35AQI (US)
28AQI (US)
42AQI (US)
29AQI (US)
34AQI (US)
37AQI (US)
35AQI (US)
31AQI (US)
37AQI (US)
36AQI (US)
42AQI (US)
32AQI (US)
24AQI (US)
25AQI (US)
41AQI (US)
45AQI (US)
19AQI (US)
19AQI (US)
43AQI (US)
47AQI (US)
53AQI (US)
47AQI (US)
37AQI (US)
34AQI (US)
51AQI (US)
55AQI (US)
36AQI (US)
29AQI (US)
28AQI (US)
33AQI (US)
34AQI (US)
27AQI (US)
28AQI (US)
33AQI (US)
46AQI (US)
33AQI (US)
38AQI (US)
36AQI (US)
35AQI (US)
77AQI (US)
63AQI (US)
53AQI (US)
46AQI (US)
61AQI (US)
66AQI (US)
69AQI (US)
62AQI (US)
63AQI (US)
54AQI (US)
41AQI (US)
23AQI (US)
25AQI (US)
26AQI (US)
27AQI (US)
43AQI (US)
48AQI (US)
12AQI (US)
15AQI (US)
24AQI (US)
22AQI (US)
41AQI (US)
11AQI (US)
20AQI (US)
24AQI (US)
23AQI (US)
25AQI (US)
25AQI (US)
26AQI (US)
24AQI (US)
23AQI (US)
26AQI (US)
23AQI (US)
26AQI (US)
28AQI (US)
22AQI (US)
20AQI (US)
20AQI (US)
21AQI (US)
20AQI (US)
28AQI (US)
29AQI (US)
27AQI (US)
30AQI (US)
28AQI (US)
26AQI (US)
21AQI (US)
14AQI (US)
24AQI (US)
25AQI (US)
22AQI (US)
21AQI (US)
26AQI (US)
27AQI (US)
24AQI (US)
28AQI (US)
28AQI (US)
28AQI (US)
28AQI (US)
28AQI (US)
26AQI (US)
27AQI (US)
32AQI (US)
41AQI (US)
34AQI (US)
31AQI (US)
39AQI (US)
34AQI (US)
35AQI (US)
42AQI (US)
38AQI (US)
25AQI (US)
31AQI (US)
32AQI (US)
32AQI (US)
24AQI (US)
30AQI (US)
27AQI (US)
48AQI (US)
54AQI (US)
55AQI (US)
23AQI (US)
41AQI (US)
42AQI (US)
46AQI (US)
38AQI (US)
43AQI (US)
25AQI (US)
29AQI (US)
41AQI (US)
No. of days
202638AQI (US)
Highest AQI (US) recorded in
March46AQI (US)
Lowest AQI (US) recorded in
June25AQI (US)
202546AQI (US)
Highest AQI (US) recorded in
October58AQI (US)
Lowest AQI (US) recorded in
September29AQI (US)
202441AQI (US)
Highest AQI (US) recorded in
January61AQI (US)
Lowest AQI (US) recorded in
July26AQI (US)
202348AQI (US)
Highest AQI (US) recorded in
January50AQI (US)
Lowest AQI (US) recorded in
March46AQI (US)
202245AQI (US)
Highest AQI (US) recorded in
August67AQI (US)
Lowest AQI (US) recorded in
September36AQI (US)
202142AQI (US)
Highest AQI (US) recorded in
May51AQI (US)
Lowest AQI (US) recorded in
August28AQI (US)
202052AQI (US)
Highest AQI (US) recorded in
August67AQI (US)
Lowest AQI (US) recorded in
July40AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Yamaga's annual 2026 AQI (US) (38) shows an average percentage change of -16.2% (improved AQI (US)) compared to previous years: 2020 (52), 2021 (42), 2022 (45), 2023 (48), 2024 (41), 2025 (46).