Shimoochiai, 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
Shimoochiai, 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 44 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 20th Aug - 21st Aug 2025
Shimoochiai, Tokyo, Tokyo, Japan
4 AM20th Aug 2025
6 PM
3 AM21st Aug 2025
AQI
AQI
61AQI
42AQI
In the last 24 hours,
Shimoochiai's AQI reached its highest point of 61 at 12 PM during the Night, while the lowest point, 42, was recorded at 3 AM during the Night between 20th Aug and 21st Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Shimoochiai, Tokyo, Tokyo, Japan
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
--°C/°C
45AQI
37AQI
39AQI
39AQI
2025 Days Vs Air Quality
Shimoochiai, 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
Shimoochiai, Tokyo, Tokyo, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI
35AQI
25AQI
26AQI
25AQI
30AQI
26AQI
26AQI
23AQI
24AQI
23AQI
26AQI
28AQI
26AQI
27AQI
24AQI
28AQI
26AQI
28AQI
29AQI
31AQI
32AQI
31AQI
34AQI
31AQI
32AQI
24AQI
28AQI
25AQI
27AQI
28AQI
28AQI
30AQI
25AQI
28AQI
27AQI
25AQI
26AQI
28AQI
28AQI
24AQI
29AQI
26AQI
30AQI
27AQI
28AQI
30AQI
31AQI
29AQI
30AQI
29AQI
28AQI
30AQI
31AQI
32AQI
30AQI
33AQI
33AQI
38AQI
40AQI
44AQI
33AQI
30AQI
24AQI
31AQI
30AQI
30AQI
33AQI
33AQI
29AQI
30AQI
29AQI
24AQI
21AQI
18AQI
15AQI
16AQI
14AQI
16AQI
24AQI
29AQI
31AQI
31AQI
50AQI
62AQI
57AQI
39AQI
31AQI
38AQI
30AQI
24AQI
20AQI
18AQI
18AQI
19AQI
15AQI
17AQI
20AQI
16AQI
23AQI
21AQI
22AQI
19AQI
22AQI
21AQI
20AQI
27AQI
28AQI
33AQI
26AQI
25AQI
22AQI
16AQI
19AQI
22AQI
23AQI
24AQI
22AQI
16AQI
21AQI
20AQI
17AQI
16AQI
21AQI
18AQI
18AQI
14AQI
17AQI
18AQI
15AQI
16AQI
15AQI
18AQI
18AQI
20AQI
21AQI
18AQI
22AQI
23AQI
34AQI
29AQI
25AQI
23AQI
21AQI
18AQI
18AQI
17AQI
15AQI
17AQI
16AQI
14AQI
14AQI
17AQI
16AQI
17AQI
19AQI
21AQI
22AQI
25AQI
22AQI
22AQI
22AQI
24AQI
24AQI
20AQI
22AQI
21AQI
28AQI
25AQI
26AQI
24AQI
20AQI
12AQI
13AQI
15AQI
16AQI
15AQI
18AQI
17AQI
20AQI
38AQI
40AQI
45AQI
43AQI
47AQI
51AQI
64AQI
77AQI
77AQI
82AQI
60AQI
49AQI
52AQI
53AQI
43AQI
44AQI
42AQI
43AQI
39AQI
34AQI
35AQI
37AQI
38AQI
41AQI
43AQI
41AQI
39AQI
36AQI
42AQI
38AQI
33AQI
32AQI
32AQI
40AQI
44AQI
61AQI
51AQI
50AQI
48AQI
47AQI
49AQI
39AQI
39AQI
35AQI
32AQI
38AQI
35AQI
37AQI
39AQI
43AQI
44AQI
28AQI
29AQI
31AQI
21AQI
19AQI
21AQI
46AQI
42AQI
No. of days
202529AQI
Highest AQI recorded in
July46AQI
Lowest AQI recorded in
May19AQI
202432AQI
Highest AQI recorded in
July51AQI
Lowest AQI recorded in
February24AQI
202329AQI
Highest AQI recorded in
April45AQI
Lowest AQI recorded in
August18AQI
202230AQI
Highest AQI recorded in
January40AQI
Lowest AQI recorded in
August22AQI
202123AQI
Highest AQI recorded in
June31AQI
Lowest AQI recorded in
February13AQI
202015AQI
Highest AQI recorded in
August22AQI
Lowest AQI recorded in
May12AQI
Most & Least Polluted Years Over the Last 6 Years
Shimoochiai's annual 2025 AQI (29) shows an average percentage change of 21.03% (worsened AQI) compared to previous years: 2020 (15), 2021 (23), 2022 (30), 2023 (29), 2024 (32).