Iwakuni, 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
Iwakuni, Yamaguchi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (2nd August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 4th highest AQI at 34 of Good air quality, showing improvement over 2025, 2024 and 2023 on the same day.
Day & Night AQI Trend: 1st Aug - 2nd Aug 2026
Iwakuni, Yamaguchi, Japan
5 AM1st Aug 2026
7 PM
4 AM2nd Aug 2026
40AQI
27AQI
41AQI
29AQI
In the last 24 hours,
Iwakuni's AQI reached its highest point of 41 at 8 PM during the Night, while the lowest point, 27, was recorded at 10 AM during the Day between 1st Aug and 2nd Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Iwakuni, Yamaguchi, Japan
22°C21/22°C
23°C22/25°C
23°C22/26°C
24°C22/27°C
25°C23/28°C
24°C22/27°C
24°C21/28°C
25°C22/28°C
26°C23/30°C
26°C23/30°C
27°C23/31°C
26°C23/30°C
27°C24/32°C
26°C22/29°C
27°C24/30°C
27°C24/30°C
27°C24/30°C
27°C24/31°C
27°C24/31°C
27°C24/32°C
27°C23/31°C
28°C24/32°C
27°C24/31°C
28°C24/32°C
28°C23/34°C
25°C22/29°C
27°C24/32°C
26°C22/31°C
27°C23/33°C
28°C24/33°C
35AQI
29AQI
35AQI
30AQI
2026 Days Vs Air Quality
Iwakuni, Yamaguchi, Japan
85%
182
15%
32
Total number of days with different AQI categories in last 214 days in 2026 (151 days remaining)
Under WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2026, 85% 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
Iwakuni, Yamaguchi, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
22AQI (US)
18AQI (US)
23AQI (US)
36AQI (US)
45AQI (US)
30AQI (US)
31AQI (US)
34AQI (US)
20AQI (US)
30AQI (US)
27AQI (US)
22AQI (US)
32AQI (US)
26AQI (US)
42AQI (US)
63AQI (US)
64AQI (US)
64AQI (US)
70AQI (US)
28AQI (US)
10AQI (US)
20AQI (US)
35AQI (US)
46AQI (US)
28AQI (US)
21AQI (US)
40AQI (US)
32AQI (US)
34AQI (US)
24AQI (US)
18AQI (US)
42AQI (US)
42AQI (US)
29AQI (US)
36AQI (US)
46AQI (US)
46AQI (US)
26AQI (US)
27AQI (US)
36AQI (US)
42AQI (US)
21AQI (US)
36AQI (US)
54AQI (US)
61AQI (US)
48AQI (US)
57AQI (US)
24AQI (US)
28AQI (US)
48AQI (US)
42AQI (US)
59AQI (US)
46AQI (US)
44AQI (US)
32AQI (US)
24AQI (US)
12AQI (US)
50AQI (US)
32AQI (US)
37AQI (US)
58AQI (US)
37AQI (US)
43AQI (US)
48AQI (US)
50AQI (US)
45AQI (US)
37AQI (US)
42AQI (US)
58AQI (US)
54AQI (US)
58AQI (US)
36AQI (US)
42AQI (US)
58AQI (US)
50AQI (US)
42AQI (US)
48AQI (US)
48AQI (US)
53AQI (US)
41AQI (US)
48AQI (US)
34AQI (US)
46AQI (US)
60AQI (US)
34AQI (US)
48AQI (US)
68AQI (US)
70AQI (US)
66AQI (US)
17AQI (US)
11AQI (US)
52AQI (US)
48AQI (US)
44AQI (US)
39AQI (US)
48AQI (US)
23AQI (US)
22AQI (US)
32AQI (US)
45AQI (US)
30AQI (US)
34AQI (US)
37AQI (US)
40AQI (US)
27AQI (US)
20AQI (US)
34AQI (US)
30AQI (US)
31AQI (US)
34AQI (US)
38AQI (US)
45AQI (US)
34AQI (US)
28AQI (US)
46AQI (US)
49AQI (US)
50AQI (US)
48AQI (US)
42AQI (US)
28AQI (US)
48AQI (US)
52AQI (US)
36AQI (US)
23AQI (US)
24AQI (US)
28AQI (US)
30AQI (US)
26AQI (US)
27AQI (US)
30AQI (US)
30AQI (US)
28AQI (US)
36AQI (US)
29AQI (US)
32AQI (US)
77AQI (US)
63AQI (US)
53AQI (US)
46AQI (US)
60AQI (US)
65AQI (US)
69AQI (US)
62AQI (US)
62AQI (US)
54AQI (US)
40AQI (US)
24AQI (US)
25AQI (US)
21AQI (US)
23AQI (US)
27AQI (US)
28AQI (US)
20AQI (US)
16AQI (US)
25AQI (US)
22AQI (US)
24AQI (US)
18AQI (US)
11AQI (US)
24AQI (US)
22AQI (US)
21AQI (US)
19AQI (US)
25AQI (US)
36AQI (US)
50AQI (US)
32AQI (US)
26AQI (US)
28AQI (US)
49AQI (US)
29AQI (US)
14AQI (US)
14AQI (US)
22AQI (US)
21AQI (US)
26AQI (US)
30AQI (US)
26AQI (US)
28AQI (US)
26AQI (US)
38AQI (US)
34AQI (US)
14AQI (US)
17AQI (US)
24AQI (US)
16AQI (US)
10AQI (US)
20AQI (US)
13AQI (US)
14AQI (US)
26AQI (US)
26AQI (US)
26AQI (US)
27AQI (US)
27AQI (US)
24AQI (US)
23AQI (US)
34AQI (US)
50AQI (US)
49AQI (US)
54AQI (US)
64AQI (US)
64AQI (US)
45AQI (US)
46AQI (US)
42AQI (US)
26AQI (US)
36AQI (US)
32AQI (US)
28AQI (US)
30AQI (US)
26AQI (US)
32AQI (US)
34AQI (US)
33AQI (US)
39AQI (US)
48AQI (US)
36AQI (US)
40AQI (US)
26AQI (US)
31AQI (US)
33AQI (US)
No. of days
202636AQI (US)
Highest AQI (US) recorded in
March48AQI (US)
Lowest AQI (US) recorded in
June26AQI (US)
202544AQI (US)
Highest AQI (US) recorded in
July53AQI (US)
Lowest AQI (US) recorded in
September31AQI (US)
202438AQI (US)
Highest AQI (US) recorded in
April50AQI (US)
Lowest AQI (US) recorded in
December31AQI (US)
202341AQI (US)
Highest AQI (US) recorded in
April51AQI (US)
Lowest AQI (US) recorded in
August32AQI (US)
202241AQI (US)
Highest AQI (US) recorded in
May54AQI (US)
Lowest AQI (US) recorded in
August24AQI (US)
202139AQI (US)
Highest AQI (US) recorded in
June51AQI (US)
Lowest AQI (US) recorded in
December32AQI (US)
202036AQI (US)
Highest AQI (US) recorded in
June45AQI (US)
Lowest AQI (US) recorded in
July30AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Iwakuni's annual 2026 AQI (US) (36) shows an average percentage change of -9.2% (improved AQI (US)) compared to previous years: 2020 (36), 2021 (39), 2022 (41), 2023 (41), 2024 (38), 2025 (44).