Hibiyakoen, Shibuya, Tokyo, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Hibiyakoen, Shibuya, Tokyo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (15th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 45 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 15th Oct - 16th Oct 2025
Hibiyakoen, Shibuya, Tokyo, Japan
5 AM15th Oct 2025
5 PM
4 AM16th Oct 2025
50AQI
31AQI
56AQI
50AQI
In the last 24 hours,
Hibiyakoen's AQI reached its highest point of 56 at 11 PM during the Night, while the lowest point, 31, was recorded at 1 PM during the Day between 15th Oct and 16th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Hibiyakoen, Shibuya, Tokyo, Japan
29°C27/32°C
30°C27/33°C
30°C24/35°C
23°C22/23°C
25°C23/26°C
26°C22/31°C
24°C22/26°C
23°C21/27°C
24°C21/27°C
25°C23/27°C
27°C25/31°C
25°C24/27°C
26°C24/28°C
27°C24/31°C
24°C22/27°C
21°C20/21°C
23°C20/27°C
24°C22/26°C
24°C23/25°C
25°C22/28°C
24°C21/27°C
22°C21/23°C
24°C21/28°C
21°C19/22°C
21°C19/23°C
19°C18/21°C
21°C18/24°C
23°C21/25°C
19°C18/21°C
19°C17/20°C
--°C/°C
47AQI
41AQI
45AQI
45AQI
2025 Days Vs Air Quality
Hibiyakoen, Shibuya, Tokyo, Japan
89%
257
11%
31
Total number of days with different AQI categories in last 289 days in 2025 (76 days remaining)
Under WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2025, 89% of 289 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
Hibiyakoen, Shibuya, Tokyo, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
26AQI
26AQI
24AQI
25AQI
24AQI
31AQI
25AQI
26AQI
24AQI
22AQI
21AQI
26AQI
27AQI
28AQI
28AQI
24AQI
25AQI
26AQI
31AQI
32AQI
32AQI
32AQI
32AQI
36AQI
33AQI
31AQI
26AQI
29AQI
25AQI
26AQI
25AQI
27AQI
27AQI
24AQI
27AQI
24AQI
25AQI
24AQI
26AQI
26AQI
24AQI
28AQI
25AQI
30AQI
23AQI
28AQI
31AQI
31AQI
27AQI
26AQI
26AQI
26AQI
28AQI
30AQI
31AQI
29AQI
31AQI
34AQI
38AQI
43AQI
45AQI
34AQI
31AQI
22AQI
27AQI
28AQI
28AQI
32AQI
30AQI
30AQI
35AQI
32AQI
30AQI
25AQI
20AQI
17AQI
19AQI
14AQI
17AQI
27AQI
30AQI
32AQI
32AQI
50AQI
61AQI
58AQI
38AQI
32AQI
40AQI
32AQI
24AQI
21AQI
18AQI
18AQI
19AQI
15AQI
17AQI
19AQI
17AQI
24AQI
21AQI
22AQI
19AQI
22AQI
20AQI
19AQI
24AQI
27AQI
32AQI
26AQI
23AQI
22AQI
17AQI
19AQI
19AQI
20AQI
20AQI
19AQI
15AQI
19AQI
19AQI
18AQI
17AQI
23AQI
19AQI
18AQI
16AQI
17AQI
18AQI
16AQI
17AQI
16AQI
19AQI
18AQI
20AQI
21AQI
19AQI
23AQI
24AQI
36AQI
28AQI
26AQI
23AQI
21AQI
18AQI
17AQI
18AQI
22AQI
19AQI
16AQI
13AQI
15AQI
18AQI
18AQI
17AQI
20AQI
22AQI
23AQI
28AQI
24AQI
22AQI
21AQI
23AQI
21AQI
19AQI
21AQI
21AQI
28AQI
25AQI
25AQI
23AQI
21AQI
14AQI
14AQI
14AQI
15AQI
16AQI
18AQI
17AQI
18AQI
32AQI
33AQI
40AQI
45AQI
46AQI
48AQI
59AQI
73AQI
77AQI
78AQI
62AQI
55AQI
56AQI
55AQI
47AQI
47AQI
45AQI
45AQI
42AQI
36AQI
37AQI
37AQI
38AQI
40AQI
42AQI
40AQI
39AQI
35AQI
41AQI
40AQI
35AQI
35AQI
32AQI
41AQI
45AQI
62AQI
52AQI
52AQI
50AQI
50AQI
51AQI
39AQI
40AQI
36AQI
33AQI
36AQI
34AQI
36AQI
39AQI
43AQI
46AQI
48AQI
51AQI
50AQI
49AQI
56AQI
56AQI
53AQI
51AQI
46AQI
52AQI
55AQI
54AQI
43AQI
38AQI
37AQI
42AQI
36AQI
29AQI
30AQI
39AQI
43AQI
37AQI
31AQI
31AQI
27AQI
35AQI
37AQI
39AQI
49AQI
47AQI
36AQI
38AQI
29AQI
30AQI
29AQI
30AQI
37AQI
52AQI
45AQI
37AQI
48AQI
43AQI
46AQI
48AQI
56AQI
55AQI
49AQI
44AQI
51AQI
56AQI
57AQI
53AQI
48AQI
36AQI
57AQI
53AQI
45AQI
27AQI
28AQI
32AQI
21AQI
20AQI
20AQI
47AQI
46AQI
37AQI
50AQI
No. of days
202532AQI
Highest AQI recorded in
October50AQI
Lowest AQI recorded in
May20AQI
202434AQI
Highest AQI recorded in
September47AQI
Lowest AQI recorded in
December25AQI
202332AQI
Highest AQI recorded in
April46AQI
Lowest AQI recorded in
August24AQI
202232AQI
Highest AQI recorded in
June45AQI
Lowest AQI recorded in
October24AQI
202126AQI
Highest AQI recorded in
December35AQI
Lowest AQI recorded in
January13AQI
202020AQI
Highest AQI recorded in
August31AQI
Lowest AQI recorded in
December13AQI
Most & Least Polluted Years Over the Last 6 Years
Hibiyakoen's annual 2025 AQI (32) shows an average percentage change of 14.8% (worsened AQI) compared to previous years: 2020 (20), 2021 (26), 2022 (32), 2023 (32), 2024 (34).