1 Chome, 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!
October Air Quality Analysis
1 Chome, Sumida City, Tokyo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (3rd October ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 54 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025
1 Chome, Sumida City, Tokyo, Japan
5 AM3rd Oct 2025
5 PM
4 AM4th Oct 2025
AQI
AQI
69AQI
48AQI
In the last 24 hours,
1 Chome's AQI reached its highest point of 69 at 2 AM during the Night, while the lowest point, 48, was recorded at 10 AM during the Night between 3rd Oct and 4th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
1 Chome, Sumida City, Tokyo, Japan
27°C26/27°C
26°C23/27°C
27°C24/31°C
28°C25/30°C
29°C26/33°C
30°C28/32°C
29°C27/30°C
27°C24/29°C
25°C24/28°C
27°C24/29°C
29°C27/31°C
28°C26/31°C
28°C26/31°C
29°C27/32°C
29°C24/33°C
22°C21/23°C
25°C23/27°C
26°C22/31°C
24°C22/26°C
23°C20/26°C
23°C21/27°C
24°C22/27°C
27°C24/31°C
25°C23/27°C
25°C23/27°C
26°C24/30°C
24°C22/27°C
21°C20/21°C
23°C20/27°C
--°C/°C
--°C/°C
36AQI
34AQI
35AQI
32AQI
2025 Days Vs Air Quality
1 Chome, Sumida City, Tokyo, Japan
88%
112
13%
16
Total number of days with different AQI categories in last 276 days in 2025 (89 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 276 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
1 Chome, 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
40AQI
42AQI
58AQI
51AQI
51AQI
49AQI
48AQI
48AQI
42AQI
38AQI
36AQI
34AQI
35AQI
34AQI
35AQI
36AQI
41AQI
42AQI
47AQI
49AQI
50AQI
46AQI
54AQI
53AQI
53AQI
49AQI
46AQI
49AQI
54AQI
52AQI
45AQI
36AQI
36AQI
43AQI
31AQI
28AQI
29AQI
38AQI
40AQI
38AQI
31AQI
30AQI
28AQI
33AQI
38AQI
39AQI
46AQI
49AQI
34AQI
33AQI
24AQI
24AQI
23AQI
23AQI
23AQI
47AQI
28AQI
26AQI
33AQI
24AQI
37AQI
52AQI
54AQI
20AQI
31AQI
42AQI
45AQI
33AQI
48AQI
No. of days
202538AQI
Highest AQI recorded in
October48AQI
Lowest AQI recorded in
May20AQI
Most & Least Polluted Years Over the Last 1 Years
1 Chome's annual 2025 AQI (38) shows an average percentage change of NaN% (improved AQI) compared to previous years: .