Yokosuka, Kanagawa, 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
Yokosuka, Kanagawa, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (1st August ):
On this day, AQI across the 1 years varied significantly: 2025 ranks 1st highest AQI at 33 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Aug - 2nd Aug 2025
Yokosuka, Kanagawa, Japan
4 AM1st Aug 2025
6 PM
3 AM2nd Aug 2025
45AQI
28AQI
36AQI
27AQI
In the last 24 hours,
Yokosuka's AQI reached its highest point of 45 at 12 PM during the Day, while the lowest point, 27, was recorded at 7 PM during the Night between 1st Aug and 2nd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Yokosuka, Kanagawa, Japan
25°C24/26°C
25°C25/26°C
26°C25/27°C
27°C26/29°C
27°C26/28°C
26°C26/27°C
27°C26/27°C
27°C24/28°C
24°C23/25°C
24°C22/26°C
25°C24/28°C
26°C25/27°C
27°C26/27°C
26°C25/27°C
26°C26/27°C
26°C26/26°C
26°C26/27°C
27°C26/27°C
27°C26/27°C
27°C26/27°C
27°C26/27°C
27°C26/28°C
27°C27/28°C
27°C27/28°C
27°C27/28°C
27°C26/27°C
27°C26/30°C
28°C26/31°C
27°C25/29°C
27°C26/29°C
--°C/°C
51AQI
36AQI
44AQI
35AQI
2025 Days Vs Air Quality
Yokosuka, Kanagawa, Japan
88%
57
12%
8
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 214 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
Yokosuka, Kanagawa, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
20AQI
18AQI
14AQI
17AQI
23AQI
25AQI
24AQI
33AQI
34AQI
39AQI
47AQI
27AQI
27AQI
26AQI
32AQI
29AQI
25AQI
30AQI
28AQI
32AQI
36AQI
34AQI
31AQI
24AQI
18AQI
16AQI
16AQI
17AQI
16AQI
20AQI
23AQI
25AQI
30AQI
31AQI
35AQI
33AQI
36AQI
47AQI
56AQI
72AQI
73AQI
68AQI
56AQI
55AQI
57AQI
54AQI
46AQI
47AQI
46AQI
47AQI
44AQI
39AQI
36AQI
34AQI
30AQI
29AQI
29AQI
26AQI
26AQI
25AQI
26AQI
27AQI
28AQI
29AQI
33AQI
17AQI
27AQI
42AQI
33AQI
No. of days
202533AQI
Highest AQI recorded in
July42AQI
Lowest AQI recorded in
May17AQI
Most & Least Polluted Years Over the Last 1 Years
Yokosuka's annual 2025 AQI (33) shows an average percentage change of NaN% (improved AQI) compared to previous years: .