Sumida City, 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
Sumida City, Tokyo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (2nd August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 39 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Sumida City, Tokyo, Japan
4 AM3rd Aug 2025
6 PM
3 AM4th Aug 2025
AQI
AQI
61AQI
37AQI
In the last 24 hours,
Sumida City's AQI reached its highest point of 61 at 12 PM during the Night, while the lowest point, undefined, was recorded at 3 AM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Sumida City, Tokyo, Japan
28°C26/31°C
30°C26/33°C
29°C27/33°C
29°C27/32°C
30°C27/33°C
28°C23/32°C
24°C22/26°C
24°C21/28°C
26°C24/29°C
26°C24/29°C
27°C26/28°C
27°C26/28°C
27°C26/30°C
27°C25/30°C
28°C25/30°C
28°C26/31°C
29°C27/32°C
29°C27/31°C
29°C26/31°C
29°C26/33°C
29°C27/32°C
29°C28/32°C
29°C27/32°C
29°C27/33°C
30°C26/35°C
29°C26/34°C
28°C25/32°C
28°C25/31°C
29°C26/33°C
--°C/°C
--°C/°C
53AQI
40AQI
45AQI
37AQI
2025 Days Vs Air Quality
Sumida City, Tokyo, Japan
91%
60
9%
6
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% of 215 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
Sumida City, Tokyo, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI
19AQI
14AQI
18AQI
28AQI
37AQI
37AQI
38AQI
44AQI
42AQI
47AQI
36AQI
32AQI
27AQI
34AQI
33AQI
27AQI
29AQI
33AQI
43AQI
37AQI
37AQI
35AQI
26AQI
22AQI
23AQI
20AQI
17AQI
18AQI
26AQI
25AQI
30AQI
37AQI
39AQI
45AQI
40AQI
45AQI
51AQI
64AQI
79AQI
83AQI
82AQI
53AQI
46AQI
45AQI
44AQI
39AQI
31AQI
32AQI
33AQI
32AQI
28AQI
26AQI
31AQI
32AQI
37AQI
42AQI
39AQI
34AQI
31AQI
35AQI
33AQI
26AQI
30AQI
32AQI
39AQI
20AQI
31AQI
42AQI
36AQI
No. of days
202536AQI
Highest AQI recorded in
July42AQI
Lowest AQI recorded in
May20AQI
Most & Least Polluted Years Over the Last 1 Years
Sumida City's annual 2025 AQI (36) shows an average percentage change of NaN% (improved AQI) compared to previous years: .