Shikawatashi, Yotsukaido, 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
Shikawatashi, Yotsukaido, Chiba, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (5th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 48 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Shikawatashi, Yotsukaido, Chiba, Japan
4 AM5th Aug 2025
6 PM
3 AM6th Aug 2025
AQI
AQI
66AQI
41AQI
In the last 24 hours,
Shikawatashi's AQI reached its highest point of 66 at 10 AM during the Night, while the lowest point, 41, was recorded at 11 PM during the Night between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Shikawatashi, Yotsukaido, Chiba, Japan
29°C26/33°C
29°C26/33°C
29°C26/32°C
27°C22/32°C
23°C22/26°C
24°C21/27°C
26°C23/29°C
25°C24/28°C
26°C25/28°C
26°C25/27°C
27°C25/30°C
27°C25/31°C
27°C25/30°C
28°C25/31°C
29°C26/32°C
29°C26/33°C
29°C26/33°C
29°C25/34°C
29°C26/33°C
29°C26/33°C
29°C26/33°C
29°C26/34°C
29°C25/35°C
29°C25/33°C
27°C24/32°C
27°C25/30°C
29°C25/34°C
30°C26/34°C
30°C27/33°C
--°C/°C
--°C/°C
46AQI
38AQI
46AQI
39AQI
2025 Days Vs Air Quality
Shikawatashi, Yotsukaido, Chiba, Japan
89%
193
11%
24
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Under WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2025, 89% of 217 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
Shikawatashi, Yotsukaido, Chiba, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
34AQI
32AQI
25AQI
31AQI
36AQI
55AQI
32AQI
37AQI
29AQI
30AQI
31AQI
35AQI
29AQI
39AQI
37AQI
37AQI
31AQI
37AQI
58AQI
41AQI
44AQI
42AQI
52AQI
44AQI
41AQI
37AQI
38AQI
39AQI
31AQI
34AQI
31AQI
42AQI
33AQI
42AQI
30AQI
34AQI
30AQI
31AQI
37AQI
30AQI
33AQI
38AQI
33AQI
57AQI
31AQI
57AQI
38AQI
45AQI
33AQI
34AQI
30AQI
31AQI
32AQI
33AQI
33AQI
34AQI
35AQI
40AQI
54AQI
46AQI
63AQI
40AQI
41AQI
27AQI
32AQI
31AQI
32AQI
32AQI
35AQI
37AQI
43AQI
38AQI
39AQI
32AQI
25AQI
19AQI
23AQI
18AQI
23AQI
43AQI
49AQI
56AQI
50AQI
67AQI
80AQI
69AQI
47AQI
38AQI
42AQI
34AQI
28AQI
23AQI
20AQI
22AQI
23AQI
24AQI
31AQI
36AQI
28AQI
45AQI
42AQI
37AQI
28AQI
40AQI
30AQI
35AQI
45AQI
51AQI
61AQI
51AQI
46AQI
45AQI
29AQI
38AQI
37AQI
44AQI
47AQI
42AQI
35AQI
43AQI
39AQI
27AQI
32AQI
37AQI
32AQI
26AQI
23AQI
26AQI
27AQI
22AQI
29AQI
27AQI
35AQI
28AQI
35AQI
41AQI
27AQI
43AQI
41AQI
61AQI
41AQI
43AQI
38AQI
37AQI
30AQI
26AQI
24AQI
23AQI
25AQI
22AQI
15AQI
20AQI
24AQI
27AQI
33AQI
36AQI
44AQI
46AQI
52AQI
39AQI
29AQI
23AQI
31AQI
31AQI
31AQI
35AQI
38AQI
50AQI
44AQI
40AQI
34AQI
31AQI
24AQI
25AQI
22AQI
21AQI
21AQI
28AQI
28AQI
32AQI
36AQI
36AQI
42AQI
45AQI
43AQI
48AQI
65AQI
73AQI
75AQI
77AQI
59AQI
52AQI
54AQI
50AQI
44AQI
42AQI
40AQI
41AQI
39AQI
34AQI
33AQI
35AQI
35AQI
36AQI
37AQI
34AQI
32AQI
30AQI
36AQI
31AQI
32AQI
30AQI
33AQI
41AQI
44AQI
60AQI
48AQI
37AQI
37AQI
40AQI
37AQI
32AQI
33AQI
44AQI
45AQI
No. of days
202537AQI
Highest AQI recorded in
August45AQI
Lowest AQI recorded in
May32AQI
202437AQI
Highest AQI recorded in
July47AQI
Lowest AQI recorded in
September29AQI
202339AQI
Highest AQI recorded in
December48AQI
Lowest AQI recorded in
August25AQI
202239AQI
Highest AQI recorded in
March47AQI
Lowest AQI recorded in
August26AQI
202139AQI
Highest AQI recorded in
January48AQI
Lowest AQI recorded in
August32AQI
202038AQI
Highest AQI recorded in
November46AQI
Lowest AQI recorded in
September27AQI
Most & Least Polluted Years Over the Last 6 Years
Shikawatashi's annual 2025 AQI (37) shows an average percentage change of -3.2% (improved AQI) compared to previous years: 2020 (38), 2021 (39), 2022 (39), 2023 (39), 2024 (37).