Otsuka, Tokyo, Tokyo, 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
Otsuka, Tokyo, Tokyo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (19th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 43 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Aug - 20th Aug 2025
Otsuka, Tokyo, Tokyo, Japan
4 AM19th Aug 2025
6 PM
3 AM20th Aug 2025
57AQI
40AQI
50AQI
40AQI
In the last 24 hours,
Otsuka's AQI reached its highest point of 57 at 11 AM during the Day, while the lowest point, 40, was recorded at 3 AM during the Night between 19th Aug and 20th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Otsuka, Tokyo, Tokyo, Japan
30°C28/33°C
30°C28/33°C
30°C28/33°C
30°C28/34°C
31°C29/34°C
31°C29/34°C
30°C29/34°C
30°C28/35°C
31°C27/36°C
30°C27/35°C
29°C26/33°C
28°C26/32°C
30°C27/35°C
31°C28/36°C
32°C30/35°C
33°C29/37°C
32°C29/36°C
32°C29/34°C
30°C26/34°C
29°C25/33°C
28°C26/28°C
29°C28/30°C
29°C27/30°C
28°C26/31°C
28°C25/32°C
29°C27/33°C
29°C27/32°C
30°C28/34°C
31°C28/35°C
30°C27/34°C
--°C/°C
45AQI
38AQI
39AQI
39AQI
2025 Days Vs Air Quality
Otsuka, Tokyo, Tokyo, Japan
95%
219
5%
12
Total number of days with different AQI categories in last 232 days in 2025 (133 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2025, 95% of 232 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Otsuka, Tokyo, Tokyo, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI
29AQI
25AQI
26AQI
25AQI
32AQI
26AQI
26AQI
24AQI
24AQI
23AQI
27AQI
29AQI
26AQI
30AQI
24AQI
29AQI
25AQI
31AQI
32AQI
31AQI
33AQI
33AQI
36AQI
33AQI
33AQI
24AQI
29AQI
25AQI
27AQI
27AQI
28AQI
30AQI
26AQI
29AQI
26AQI
24AQI
25AQI
28AQI
28AQI
24AQI
30AQI
26AQI
29AQI
27AQI
29AQI
32AQI
33AQI
30AQI
30AQI
29AQI
27AQI
30AQI
31AQI
32AQI
31AQI
34AQI
33AQI
41AQI
43AQI
47AQI
33AQI
30AQI
23AQI
30AQI
31AQI
30AQI
34AQI
32AQI
30AQI
35AQI
33AQI
26AQI
23AQI
19AQI
17AQI
17AQI
14AQI
17AQI
25AQI
27AQI
29AQI
28AQI
49AQI
62AQI
58AQI
38AQI
31AQI
38AQI
30AQI
24AQI
20AQI
18AQI
18AQI
20AQI
15AQI
17AQI
20AQI
19AQI
23AQI
24AQI
24AQI
18AQI
24AQI
21AQI
19AQI
27AQI
29AQI
36AQI
27AQI
26AQI
23AQI
17AQI
20AQI
21AQI
22AQI
22AQI
21AQI
15AQI
19AQI
19AQI
17AQI
20AQI
26AQI
21AQI
19AQI
17AQI
18AQI
19AQI
15AQI
17AQI
16AQI
21AQI
20AQI
23AQI
23AQI
19AQI
25AQI
26AQI
40AQI
34AQI
27AQI
26AQI
23AQI
19AQI
18AQI
17AQI
16AQI
18AQI
15AQI
14AQI
15AQI
20AQI
20AQI
18AQI
24AQI
25AQI
26AQI
32AQI
26AQI
21AQI
20AQI
23AQI
21AQI
19AQI
20AQI
20AQI
34AQI
25AQI
28AQI
22AQI
20AQI
12AQI
12AQI
14AQI
15AQI
15AQI
18AQI
18AQI
19AQI
31AQI
32AQI
38AQI
44AQI
47AQI
50AQI
60AQI
74AQI
76AQI
81AQI
63AQI
56AQI
57AQI
57AQI
49AQI
48AQI
46AQI
44AQI
40AQI
37AQI
36AQI
37AQI
38AQI
40AQI
41AQI
39AQI
39AQI
37AQI
41AQI
38AQI
34AQI
34AQI
32AQI
39AQI
45AQI
58AQI
52AQI
50AQI
48AQI
48AQI
48AQI
41AQI
40AQI
36AQI
33AQI
35AQI
35AQI
35AQI
39AQI
42AQI
43AQI
28AQI
29AQI
32AQI
22AQI
21AQI
21AQI
47AQI
42AQI
No. of days
202530AQI
Highest AQI recorded in
July47AQI
Lowest AQI recorded in
May21AQI
202432AQI
Highest AQI recorded in
July44AQI
Lowest AQI recorded in
January23AQI
202330AQI
Highest AQI recorded in
April41AQI
Lowest AQI recorded in
September18AQI
202234AQI
Highest AQI recorded in
March43AQI
Lowest AQI recorded in
August24AQI
202124AQI
Highest AQI recorded in
August32AQI
Lowest AQI recorded in
February14AQI
202017AQI
Highest AQI recorded in
August25AQI
Lowest AQI recorded in
October13AQI
Most & Least Polluted Years Over the Last 6 Years
Otsuka's annual 2025 AQI (30) shows an average percentage change of 14.5% (worsened AQI) compared to previous years: 2020 (17), 2021 (24), 2022 (34), 2023 (30), 2024 (32).