4 chome, Fuchu, 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
4 chome, Fuchu, 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 46 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Oct - 4th Oct 2025
4 chome, Fuchu, Tokyo, Japan
5 AM3rd Oct 2025
5 PM
4 AM4th Oct 2025
AQI
AQI
63AQI
35AQI
In the last 24 hours,
4 chome's AQI reached its highest point of 63 at 12 AM during the Night, while the lowest point, 35, was recorded at 5 AM during the Night between 3rd Oct and 4th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
4 chome, Fuchu, Tokyo, Japan
26°C26/26°C
24°C23/25°C
26°C23/31°C
28°C24/32°C
30°C26/35°C
30°C27/33°C
29°C27/31°C
27°C24/30°C
24°C23/26°C
26°C24/30°C
28°C26/32°C
29°C26/32°C
29°C28/33°C
30°C26/35°C
30°C24/36°C
22°C21/23°C
23°C22/24°C
26°C22/31°C
23°C21/26°C
23°C20/26°C
23°C20/26°C
24°C21/28°C
27°C24/31°C
24°C23/27°C
25°C23/27°C
27°C23/33°C
23°C22/26°C
20°C20/20°C
22°C19/27°C
--°C/°C
--°C/°C
37AQI
33AQI
35AQI
33AQI
2025 Days Vs Air Quality
4 chome, Fuchu, Tokyo, Japan
86%
110
14%
18
Total number of days with different AQI categories in last 276 days in 2025 (89 days remaining)
Under WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2025, 86% 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
4 chome, Fuchu, Tokyo, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI
19AQI
15AQI
17AQI
23AQI
21AQI
21AQI
33AQI
34AQI
39AQI
49AQI
33AQI
30AQI
27AQI
31AQI
30AQI
25AQI
25AQI
30AQI
37AQI
31AQI
31AQI
31AQI
25AQI
19AQI
18AQI
17AQI
16AQI
16AQI
21AQI
22AQI
26AQI
36AQI
41AQI
46AQI
43AQI
45AQI
50AQI
55AQI
70AQI
76AQI
76AQI
62AQI
53AQI
56AQI
54AQI
46AQI
44AQI
43AQI
42AQI
39AQI
37AQI
36AQI
39AQI
38AQI
41AQI
41AQI
38AQI
37AQI
35AQI
38AQI
40AQI
33AQI
36AQI
33AQI
41AQI
44AQI
58AQI
53AQI
51AQI
46AQI
47AQI
47AQI
41AQI
39AQI
35AQI
34AQI
36AQI
35AQI
37AQI
40AQI
42AQI
45AQI
47AQI
49AQI
50AQI
49AQI
57AQI
57AQI
56AQI
51AQI
48AQI
51AQI
56AQI
53AQI
45AQI
39AQI
37AQI
35AQI
30AQI
30AQI
30AQI
38AQI
41AQI
37AQI
31AQI
32AQI
29AQI
36AQI
39AQI
37AQI
46AQI
44AQI
36AQI
34AQI
30AQI
30AQI
29AQI
29AQI
30AQI
47AQI
36AQI
33AQI
26AQI
28AQI
39AQI
44AQI
46AQI
20AQI
27AQI
46AQI
46AQI
35AQI
43AQI
No. of days
202538AQI
Highest AQI recorded in
July46AQI
Lowest AQI recorded in
May20AQI
Most & Least Polluted Years Over the Last 1 Years
4 chome's annual 2025 AQI (38) shows an average percentage change of NaN% (improved AQI) compared to previous years: .