Yayoicho, Chiba, Chiba, 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
Yayoicho, Chiba, Chiba, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (27th August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 50 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 28th Aug - 29th Aug 2025
Yayoicho, Chiba, Chiba, Japan
4 AM28th Aug 2025
6 PM
3 AM29th Aug 2025
AQI
AQI
53AQI
32AQI
In the last 24 hours,
Yayoicho's AQI reached its highest point of 53 at 5 AM during the Night, while the lowest point, 32, was recorded at 2 PM during the Night between 28th Aug and 29th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Yayoicho, Chiba, Chiba, Japan
29°C25/33°C
27°C24/32°C
27°C25/30°C
29°C25/34°C
30°C26/34°C
30°C27/33°C
30°C27/34°C
31°C28/35°C
30°C28/34°C
28°C24/33°C
28°C24/32°C
27°C25/27°C
27°C26/28°C
28°C26/29°C
27°C25/31°C
27°C24/31°C
28°C25/32°C
28°C26/32°C
28°C26/32°C
29°C26/35°C
29°C26/33°C
29°C26/33°C
30°C26/35°C
30°C27/34°C
30°C27/33°C
30°C27/35°C
30°C27/34°C
30°C27/33°C
29°C27/33°C
--°C/°C
--°C/°C
47AQI
43AQI
43AQI
43AQI
2025 Days Vs Air Quality
Yayoicho, Chiba, Chiba, Japan
87%
79
13%
12
Total number of days with different AQI categories in last 240 days in 2025 (125 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2025, 87% of 240 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
Yayoicho, Chiba, Chiba, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
24AQI
24AQI
17AQI
21AQI
28AQI
30AQI
33AQI
37AQI
43AQI
44AQI
50AQI
37AQI
37AQI
35AQI
39AQI
36AQI
33AQI
38AQI
37AQI
44AQI
42AQI
40AQI
37AQI
33AQI
28AQI
28AQI
24AQI
22AQI
23AQI
31AQI
28AQI
32AQI
36AQI
38AQI
42AQI
40AQI
41AQI
48AQI
59AQI
66AQI
70AQI
70AQI
60AQI
54AQI
55AQI
52AQI
47AQI
45AQI
44AQI
44AQI
41AQI
39AQI
37AQI
38AQI
35AQI
35AQI
37AQI
34AQI
34AQI
32AQI
36AQI
32AQI
32AQI
31AQI
31AQI
38AQI
42AQI
58AQI
50AQI
50AQI
48AQI
48AQI
48AQI
46AQI
42AQI
35AQI
32AQI
36AQI
34AQI
37AQI
38AQI
43AQI
44AQI
48AQI
49AQI
50AQI
48AQI
56AQI
55AQI
53AQI
50AQI
22AQI
34AQI
44AQI
45AQI
No. of days
202540AQI
Highest AQI recorded in
August45AQI
Lowest AQI recorded in
May22AQI
Most & Least Polluted Years Over the Last 1 Years
Yayoicho's annual 2025 AQI (40) shows an average percentage change of NaN% (improved AQI) compared to previous years: .