Waki, Yamaguchi, 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
Waki, Yamaguchi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 48 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Waki, Yamaguchi, Japan
5 AM4th Aug 2025
7 PM
4 AM5th Aug 2025
74AQI
42AQI
51AQI
41AQI
In the last 24 hours,
Waki's AQI reached its highest point of 74 at 12 PM during the Day, while the lowest point, 41, was recorded at 10 PM during the Night between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Waki, Yamaguchi, Japan
26°C23/30°C
26°C22/30°C
26°C23/30°C
26°C23/30°C
26°C23/30°C
26°C23/29°C
26°C23/29°C
26°C24/29°C
24°C20/27°C
24°C21/29°C
25°C22/29°C
25°C23/28°C
24°C23/25°C
25°C23/28°C
26°C23/29°C
26°C23/30°C
26°C23/30°C
26°C23/30°C
26°C23/30°C
27°C24/30°C
27°C24/30°C
27°C23/31°C
26°C23/30°C
26°C23/30°C
26°C23/31°C
26°C23/31°C
27°C23/31°C
27°C23/32°C
27°C24/31°C
27°C25/30°C
--°C/°C
50AQI
35AQI
49AQI
43AQI
2025 Days Vs Air Quality
Waki, Yamaguchi, Japan
75%
163
25%
53
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Under WHO’s Safe Air Quality Limits: 75%
Health Risk Level:
Low
In 2025, 75% 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
Waki, Yamaguchi, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
26AQI
34AQI
29AQI
28AQI
26AQI
34AQI
29AQI
29AQI
28AQI
27AQI
28AQI
28AQI
36AQI
37AQI
36AQI
31AQI
29AQI
26AQI
37AQI
33AQI
42AQI
56AQI
66AQI
58AQI
44AQI
39AQI
33AQI
33AQI
30AQI
43AQI
42AQI
46AQI
32AQI
39AQI
31AQI
34AQI
29AQI
30AQI
30AQI
28AQI
29AQI
32AQI
29AQI
30AQI
36AQI
31AQI
39AQI
40AQI
34AQI
34AQI
30AQI
33AQI
35AQI
33AQI
35AQI
35AQI
39AQI
51AQI
53AQI
58AQI
78AQI
43AQI
41AQI
28AQI
37AQI
32AQI
40AQI
41AQI
41AQI
44AQI
47AQI
52AQI
33AQI
33AQI
20AQI
34AQI
26AQI
39AQI
44AQI
47AQI
64AQI
60AQI
54AQI
65AQI
73AQI
62AQI
52AQI
46AQI
40AQI
39AQI
41AQI
33AQI
26AQI
30AQI
35AQI
36AQI
35AQI
28AQI
46AQI
44AQI
43AQI
44AQI
36AQI
36AQI
25AQI
38AQI
37AQI
41AQI
40AQI
31AQI
32AQI
35AQI
21AQI
29AQI
58AQI
48AQI
54AQI
44AQI
41AQI
47AQI
52AQI
39AQI
48AQI
37AQI
40AQI
28AQI
30AQI
30AQI
34AQI
32AQI
42AQI
51AQI
54AQI
60AQI
56AQI
53AQI
43AQI
50AQI
60AQI
58AQI
45AQI
44AQI
43AQI
34AQI
27AQI
30AQI
42AQI
38AQI
50AQI
44AQI
41AQI
49AQI
53AQI
30AQI
43AQI
47AQI
50AQI
56AQI
66AQI
68AQI
39AQI
42AQI
53AQI
47AQI
42AQI
31AQI
30AQI
29AQI
39AQI
46AQI
50AQI
53AQI
62AQI
49AQI
47AQI
46AQI
51AQI
54AQI
52AQI
51AQI
55AQI
57AQI
74AQI
82AQI
89AQI
86AQI
71AQI
66AQI
69AQI
67AQI
80AQI
64AQI
59AQI
56AQI
45AQI
51AQI
53AQI
51AQI
40AQI
39AQI
35AQI
30AQI
29AQI
31AQI
39AQI
31AQI
26AQI
25AQI
32AQI
32AQI
36AQI
39AQI
44AQI
42AQI
41AQI
48AQI
35AQI
35AQI
46AQI
38AQI
43AQI
48AQI
51AQI
44AQI
No. of days
202542AQI
Highest AQI recorded in
July51AQI
Lowest AQI recorded in
February35AQI
202438AQI
Highest AQI recorded in
April51AQI
Lowest AQI recorded in
December29AQI
202341AQI
Highest AQI recorded in
April52AQI
Lowest AQI recorded in
August32AQI
202240AQI
Highest AQI recorded in
May54AQI
Lowest AQI recorded in
August24AQI
202139AQI
Highest AQI recorded in
June51AQI
Lowest AQI recorded in
December31AQI
202037AQI
Highest AQI recorded in
August54AQI
Lowest AQI recorded in
December30AQI
Most & Least Polluted Years Over the Last 6 Years
Waki's annual 2025 AQI (42) shows an average percentage change of 8.2% (worsened AQI) compared to previous years: 2020 (37), 2021 (39), 2022 (40), 2023 (41), 2024 (38).