Kounodai, Iwata, Shizuoka, 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
Kounodai, Iwata, Shizuoka, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (17th August):
On this day, AQI across the 4 years varied significantly: 2026 ranks 3rd highest AQI at 30 of Good air quality, showing improvement over 2025 and 2023 on the same day.
Day & Night AQI Trend: 16th Aug - 17th Aug 2026
Kounodai, Iwata, Shizuoka, Japan
5 AM16th Aug 2026
6 PM
4 AM17th Aug 2026
88AQI
6AQI
44AQI
21AQI
In the last 24 hours,
Kounodai's AQI reached its highest point of 88 at 3 PM during the Day, while the lowest point, 6, was recorded at 9 AM during the Day between 16th Aug and 17th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Kounodai, Iwata, Shizuoka, Japan
28°C25/31°C
29°C26/32°C
30°C26/34°C
30°C27/36°C
31°C27/36°C
30°C27/33°C
30°C27/34°C
28°C27/31°C
28°C25/30°C
27°C25/31°C
30°C26/35°C
32°C27/37°C
31°C27/37°C
32°C27/37°C
31°C27/35°C
27°C26/30°C
26°C23/31°C
28°C24/33°C
29°C26/33°C
29°C26/32°C
28°C25/32°C
28°C25/31°C
27°C25/29°C
24°C23/27°C
25°C23/28°C
27°C23/31°C
27°C23/31°C
27°C24/30°C
27°C24/30°C
13°C13/13°C
63AQI
19AQI
47AQI
19AQI
2026 Days Vs Air Quality
Kounodai, Iwata, Shizuoka, Japan
87%
200
13%
29
Total number of days with different AQI categories in last 229 days in 2026 (136 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2026, 87% of 229 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
Kounodai, Iwata, Shizuoka, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
12AQI (US)
11AQI (US)
10AQI (US)
22AQI (US)
44AQI (US)
17AQI (US)
18AQI (US)
22AQI (US)
10AQI (US)
27AQI (US)
30AQI (US)
17AQI (US)
34AQI (US)
17AQI (US)
31AQI (US)
48AQI (US)
46AQI (US)
38AQI (US)
42AQI (US)
22AQI (US)
9AQI (US)
19AQI (US)
35AQI (US)
43AQI (US)
38AQI (US)
10AQI (US)
36AQI (US)
29AQI (US)
23AQI (US)
33AQI (US)
31AQI (US)
29AQI (US)
40AQI (US)
31AQI (US)
33AQI (US)
45AQI (US)
44AQI (US)
16AQI (US)
23AQI (US)
33AQI (US)
36AQI (US)
41AQI (US)
35AQI (US)
47AQI (US)
57AQI (US)
51AQI (US)
48AQI (US)
16AQI (US)
21AQI (US)
31AQI (US)
33AQI (US)
45AQI (US)
43AQI (US)
46AQI (US)
42AQI (US)
23AQI (US)
18AQI (US)
44AQI (US)
37AQI (US)
22AQI (US)
61AQI (US)
38AQI (US)
14AQI (US)
50AQI (US)
53AQI (US)
25AQI (US)
17AQI (US)
40AQI (US)
56AQI (US)
54AQI (US)
60AQI (US)
38AQI (US)
44AQI (US)
58AQI (US)
50AQI (US)
46AQI (US)
50AQI (US)
33AQI (US)
38AQI (US)
39AQI (US)
44AQI (US)
44AQI (US)
47AQI (US)
57AQI (US)
13AQI (US)
24AQI (US)
51AQI (US)
62AQI (US)
53AQI (US)
36AQI (US)
15AQI (US)
9AQI (US)
48AQI (US)
29AQI (US)
41AQI (US)
31AQI (US)
35AQI (US)
20AQI (US)
24AQI (US)
47AQI (US)
35AQI (US)
32AQI (US)
33AQI (US)
40AQI (US)
34AQI (US)
33AQI (US)
35AQI (US)
30AQI (US)
30AQI (US)
36AQI (US)
38AQI (US)
45AQI (US)
27AQI (US)
16AQI (US)
46AQI (US)
49AQI (US)
49AQI (US)
45AQI (US)
40AQI (US)
37AQI (US)
47AQI (US)
54AQI (US)
45AQI (US)
19AQI (US)
15AQI (US)
28AQI (US)
30AQI (US)
25AQI (US)
25AQI (US)
28AQI (US)
30AQI (US)
30AQI (US)
37AQI (US)
31AQI (US)
39AQI (US)
86AQI (US)
69AQI (US)
52AQI (US)
49AQI (US)
62AQI (US)
60AQI (US)
60AQI (US)
54AQI (US)
58AQI (US)
48AQI (US)
40AQI (US)
25AQI (US)
23AQI (US)
19AQI (US)
23AQI (US)
27AQI (US)
29AQI (US)
25AQI (US)
25AQI (US)
24AQI (US)
24AQI (US)
22AQI (US)
21AQI (US)
20AQI (US)
19AQI (US)
29AQI (US)
20AQI (US)
24AQI (US)
29AQI (US)
24AQI (US)
20AQI (US)
26AQI (US)
23AQI (US)
25AQI (US)
29AQI (US)
24AQI (US)
35AQI (US)
11AQI (US)
18AQI (US)
24AQI (US)
26AQI (US)
28AQI (US)
27AQI (US)
30AQI (US)
30AQI (US)
56AQI (US)
38AQI (US)
27AQI (US)
16AQI (US)
20AQI (US)
21AQI (US)
22AQI (US)
25AQI (US)
25AQI (US)
23AQI (US)
22AQI (US)
13AQI (US)
34AQI (US)
37AQI (US)
46AQI (US)
50AQI (US)
57AQI (US)
54AQI (US)
33AQI (US)
20AQI (US)
33AQI (US)
57AQI (US)
56AQI (US)
64AQI (US)
68AQI (US)
64AQI (US)
35AQI (US)
21AQI (US)
34AQI (US)
37AQI (US)
40AQI (US)
35AQI (US)
42AQI (US)
50AQI (US)
22AQI (US)
31AQI (US)
30AQI (US)
28AQI (US)
22AQI (US)
34AQI (US)
31AQI (US)
26AQI (US)
26AQI (US)
21AQI (US)
25AQI (US)
18AQI (US)
22AQI (US)
31AQI (US)
30AQI (US)
27AQI (US)
36AQI (US)
42AQI (US)
34AQI (US)
40AQI (US)
26AQI (US)
36AQI (US)
29AQI (US)
No. of days
202634AQI (US)
Highest AQI (US) recorded in
March42AQI (US)
Lowest AQI (US) recorded in
June26AQI (US)
202538AQI (US)
Highest AQI (US) recorded in
August47AQI (US)
Lowest AQI (US) recorded in
May33AQI (US)
202337AQI (US)
Highest AQI (US) recorded in
April49AQI (US)
Lowest AQI (US) recorded in
August30AQI (US)
202236AQI (US)
Highest AQI (US) recorded in
March44AQI (US)
Lowest AQI (US) recorded in
August26AQI (US)
202134AQI (US)
Highest AQI (US) recorded in
June41AQI (US)
Lowest AQI (US) recorded in
January26AQI (US)
202032AQI (US)
Highest AQI (US) recorded in
August52AQI (US)
Lowest AQI (US) recorded in
December22AQI (US)
Most & Least Polluted Years Over the Last 6 Years
Kounodai's annual 2026 AQI (US) (34) shows an average percentage change of -3.5% (improved AQI (US)) compared to previous years: 2020 (32), 2021 (34), 2022 (36), 2023 (37), 2025 (38).