Wanikoen, Yawata Shimizui, Kyoto, Japan 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
Wanikoen, Yawata Shimizui, Kyoto, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (20th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 37 of Good air quality, showing improvement over 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 20th Sep - 21st Sep 2025
Wanikoen, Yawata Shimizui, Kyoto, Japan
5 AM20th Sep 2025
6 PM
4 AM21st Sep 2025
40AQI
19AQI
60AQI
35AQI
In the last 24 hours,
Wanikoen's AQI reached its highest point of 60 at 12 AM during the Night, while the lowest point, 19, was recorded at 12 PM during the Day between 20th Sep and 21st Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Wanikoen, Yawata Shimizui, Kyoto, Japan
30°C27/34°C
30°C27/34°C
30°C28/34°C
30°C27/35°C
30°C27/33°C
29°C27/33°C
29°C25/34°C
30°C27/34°C
31°C27/36°C
31°C27/37°C
30°C27/35°C
30°C27/34°C
30°C27/35°C
26°C24/27°C
26°C24/29°C
28°C23/33°C
28°C25/32°C
29°C26/33°C
30°C26/34°C
29°C26/33°C
27°C24/30°C
27°C25/31°C
27°C24/31°C
28°C25/32°C
29°C26/34°C
29°C26/34°C
29°C27/33°C
27°C24/31°C
26°C23/30°C
25°C23/27°C
--°C/°C
43AQI
39AQI
41AQI
41AQI
2025 Days Vs Air Quality
Wanikoen, Yawata Shimizui, Kyoto, Japan
74%
195
26%
68
Total number of days with different AQI categories in last 264 days in 2025 (101 days remaining)
Under WHO’s Safe Air Quality Limits: 74%
Health Risk Level:
Low
In 2025, 74% of 264 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
Wanikoen, Yawata Shimizui, Kyoto, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI
41AQI
31AQI
33AQI
32AQI
41AQI
34AQI
33AQI
31AQI
26AQI
29AQI
37AQI
40AQI
49AQI
44AQI
42AQI
36AQI
34AQI
34AQI
42AQI
37AQI
55AQI
65AQI
59AQI
43AQI
39AQI
41AQI
36AQI
33AQI
39AQI
75AQI
73AQI
46AQI
55AQI
40AQI
40AQI
34AQI
38AQI
30AQI
30AQI
30AQI
29AQI
39AQI
31AQI
39AQI
28AQI
51AQI
37AQI
38AQI
31AQI
29AQI
30AQI
30AQI
32AQI
32AQI
37AQI
42AQI
60AQI
53AQI
58AQI
83AQI
44AQI
45AQI
31AQI
39AQI
33AQI
39AQI
36AQI
40AQI
34AQI
33AQI
44AQI
39AQI
38AQI
22AQI
31AQI
27AQI
28AQI
42AQI
56AQI
60AQI
70AQI
71AQI
72AQI
90AQI
68AQI
49AQI
44AQI
35AQI
37AQI
32AQI
29AQI
22AQI
26AQI
38AQI
41AQI
47AQI
46AQI
50AQI
54AQI
52AQI
52AQI
32AQI
48AQI
25AQI
48AQI
48AQI
58AQI
59AQI
50AQI
43AQI
49AQI
26AQI
28AQI
64AQI
54AQI
60AQI
46AQI
55AQI
63AQI
57AQI
39AQI
47AQI
39AQI
44AQI
26AQI
32AQI
30AQI
34AQI
29AQI
33AQI
49AQI
54AQI
58AQI
54AQI
56AQI
44AQI
50AQI
54AQI
63AQI
45AQI
37AQI
53AQI
35AQI
27AQI
29AQI
33AQI
30AQI
39AQI
35AQI
37AQI
42AQI
49AQI
27AQI
47AQI
45AQI
48AQI
54AQI
63AQI
43AQI
33AQI
38AQI
42AQI
45AQI
30AQI
31AQI
42AQI
36AQI
49AQI
53AQI
56AQI
52AQI
44AQI
39AQI
33AQI
35AQI
34AQI
51AQI
44AQI
49AQI
54AQI
62AQI
79AQI
83AQI
94AQI
87AQI
78AQI
67AQI
75AQI
83AQI
60AQI
50AQI
53AQI
51AQI
40AQI
49AQI
51AQI
36AQI
39AQI
35AQI
33AQI
32AQI
36AQI
42AQI
36AQI
32AQI
29AQI
26AQI
30AQI
39AQI
42AQI
42AQI
46AQI
46AQI
49AQI
62AQI
52AQI
53AQI
47AQI
44AQI
47AQI
44AQI
37AQI
35AQI
39AQI
45AQI
45AQI
45AQI
44AQI
47AQI
46AQI
46AQI
47AQI
43AQI
50AQI
56AQI
57AQI
57AQI
55AQI
53AQI
56AQI
56AQI
56AQI
41AQI
34AQI
38AQI
29AQI
22AQI
28AQI
34AQI
36AQI
38AQI
35AQI
29AQI
31AQI
27AQI
40AQI
37AQI
44AQI
52AQI
35AQI
34AQI
37AQI
40AQI
39AQI
46AQI
45AQI
42AQI
44AQI
51AQI
49AQI
35AQI
No. of days
202544AQI
Highest AQI recorded in
July51AQI
Lowest AQI recorded in
September35AQI
202435AQI
Highest AQI recorded in
April45AQI
Lowest AQI recorded in
October30AQI
202340AQI
Highest AQI recorded in
April48AQI
Lowest AQI recorded in
August29AQI
202237AQI
Highest AQI recorded in
March47AQI
Lowest AQI recorded in
August26AQI
202137AQI
Highest AQI recorded in
June42AQI
Lowest AQI recorded in
August31AQI
202037AQI
Highest AQI recorded in
August54AQI
Lowest AQI recorded in
July30AQI
Most & Least Polluted Years Over the Last 6 Years
Wanikoen's annual 2025 AQI (44) shows an average percentage change of 18.05% (worsened AQI) compared to previous years: 2020 (37), 2021 (37), 2022 (37), 2023 (40), 2024 (35).