Kasugacho, Fukuyama, Hiroshima, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Kasugacho, Fukuyama, Hiroshima, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 53 of Moderate air quality, showing improvement over 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Kasugacho, Fukuyama, Hiroshima, Japan
5 AM4th Oct 2025
6 PM
4 AM5th Oct 2025
60AQI
42AQI
74AQI
49AQI
In the last 24 hours,
Kasugacho's AQI reached its highest point of 74 at 7 PM during the Night, while the lowest point, 42, was recorded at 9 AM during the Day between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Kasugacho, Fukuyama, Hiroshima, Japan
28°C25/33°C
27°C23/32°C
28°C24/33°C
26°C23/31°C
28°C25/32°C
25°C22/27°C
26°C23/30°C
26°C23/30°C
26°C24/30°C
27°C24/31°C
28°C25/33°C
28°C24/32°C
27°C24/32°C
25°C22/28°C
24°C20/28°C
25°C22/28°C
24°C19/28°C
22°C17/27°C
21°C20/22°C
24°C20/29°C
24°C22/27°C
25°C21/29°C
22°C19/26°C
21°C18/25°C
23°C17/27°C
21°C17/26°C
22°C18/28°C
22°C18/27°C
19°C18/20°C
22°C19/24°C
--°C/°C
33AQI
26AQI
32AQI
29AQI
2025 Days Vs Air Quality
Kasugacho, Fukuyama, Hiroshima, Japan
76%
210
23%
65
0.7%
2
Total number of days with different AQI categories in last 278 days in 2025 (87 days remaining)
Under WHO’s Safe Air Quality Limits: 76%
Health Risk Level:
Low
In 2025, 76% of 278 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
Kasugacho, Fukuyama, Hiroshima, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
28AQI
37AQI
30AQI
30AQI
27AQI
32AQI
28AQI
29AQI
27AQI
26AQI
27AQI
28AQI
31AQI
35AQI
38AQI
35AQI
31AQI
30AQI
50AQI
38AQI
41AQI
61AQI
86AQI
58AQI
48AQI
39AQI
38AQI
34AQI
33AQI
45AQI
47AQI
50AQI
38AQI
44AQI
37AQI
38AQI
32AQI
31AQI
30AQI
28AQI
30AQI
33AQI
37AQI
32AQI
42AQI
29AQI
48AQI
39AQI
41AQI
35AQI
34AQI
32AQI
34AQI
32AQI
37AQI
41AQI
39AQI
53AQI
57AQI
64AQI
105AQI
53AQI
49AQI
34AQI
39AQI
34AQI
46AQI
45AQI
50AQI
48AQI
55AQI
61AQI
42AQI
36AQI
28AQI
39AQI
27AQI
42AQI
49AQI
52AQI
68AQI
59AQI
52AQI
68AQI
79AQI
93AQI
52AQI
48AQI
44AQI
50AQI
47AQI
43AQI
26AQI
36AQI
30AQI
30AQI
38AQI
30AQI
37AQI
36AQI
38AQI
31AQI
28AQI
26AQI
22AQI
28AQI
35AQI
36AQI
36AQI
37AQI
25AQI
28AQI
32AQI
27AQI
57AQI
43AQI
44AQI
42AQI
34AQI
44AQI
58AQI
40AQI
57AQI
35AQI
43AQI
28AQI
31AQI
28AQI
44AQI
34AQI
44AQI
54AQI
52AQI
67AQI
66AQI
50AQI
47AQI
45AQI
62AQI
73AQI
51AQI
44AQI
42AQI
33AQI
25AQI
27AQI
42AQI
35AQI
49AQI
44AQI
42AQI
50AQI
64AQI
33AQI
54AQI
52AQI
55AQI
52AQI
74AQI
55AQI
36AQI
39AQI
61AQI
57AQI
42AQI
34AQI
32AQI
33AQI
38AQI
50AQI
57AQI
53AQI
60AQI
53AQI
48AQI
47AQI
50AQI
56AQI
54AQI
55AQI
60AQI
57AQI
77AQI
83AQI
105AQI
92AQI
78AQI
72AQI
71AQI
71AQI
72AQI
63AQI
59AQI
56AQI
50AQI
50AQI
53AQI
50AQI
43AQI
39AQI
34AQI
35AQI
35AQI
35AQI
40AQI
26AQI
24AQI
23AQI
31AQI
31AQI
42AQI
48AQI
43AQI
44AQI
45AQI
58AQI
48AQI
50AQI
48AQI
48AQI
37AQI
35AQI
32AQI
33AQI
39AQI
46AQI
41AQI
42AQI
39AQI
46AQI
46AQI
46AQI
44AQI
43AQI
47AQI
50AQI
51AQI
51AQI
53AQI
50AQI
52AQI
52AQI
51AQI
40AQI
33AQI
43AQI
29AQI
24AQI
27AQI
33AQI
37AQI
34AQI
36AQI
30AQI
30AQI
31AQI
33AQI
37AQI
32AQI
40AQI
24AQI
24AQI
27AQI
20AQI
21AQI
22AQI
21AQI
22AQI
27AQI
22AQI
21AQI
19AQI
27AQI
28AQI
40AQI
45AQI
53AQI
38AQI
38AQI
52AQI
35AQI
45AQI
50AQI
53AQI
45AQI
29AQI
42AQI
No. of days
202543AQI
Highest AQI recorded in
July53AQI
Lowest AQI recorded in
September29AQI
202442AQI
Highest AQI recorded in
April60AQI
Lowest AQI recorded in
December29AQI
202350AQI
Highest AQI recorded in
March69AQI
Lowest AQI recorded in
August32AQI
202249AQI
Highest AQI recorded in
March63AQI
Lowest AQI recorded in
January32AQI
202146AQI
Highest AQI recorded in
March60AQI
Lowest AQI recorded in
August34AQI
202041AQI
Highest AQI recorded in
August61AQI
Lowest AQI recorded in
September26AQI
Most & Least Polluted Years Over the Last 6 Years
Kasugacho's annual 2025 AQI (43) shows an average percentage change of -5.9% (improved AQI) compared to previous years: 2020 (41), 2021 (46), 2022 (49), 2023 (50), 2024 (42).