Kasugacho, Higashiomi, Shiga, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Kasugacho, Higashiomi, Shiga, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (19th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks the most lowest AQI at 32 of Good air quality, showing improvement over 2024, 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 20th Sep - 21st Sep 2025
Kasugacho, Higashiomi, Shiga, Japan
5 AM20th Sep 2025
6 PM
4 AM21st Sep 2025
AQI
AQI
38AQI
23AQI
In the last 24 hours,
Kasugacho's AQI reached its highest point of 38 at 11 PM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 20th Sep and 21st Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Kasugacho, Higashiomi, Shiga, Japan
29°C25/34°C
28°C25/31°C
28°C25/33°C
28°C24/32°C
27°C25/32°C
27°C24/31°C
27°C24/31°C
28°C25/33°C
29°C25/34°C
29°C25/35°C
29°C25/34°C
29°C25/34°C
28°C24/33°C
25°C23/26°C
24°C23/27°C
26°C22/30°C
27°C23/31°C
27°C24/31°C
27°C25/31°C
27°C23/31°C
24°C21/28°C
24°C22/27°C
25°C23/28°C
26°C24/29°C
27°C24/31°C
27°C24/32°C
27°C24/30°C
25°C22/28°C
23°C20/27°C
--°C/°C
--°C/°C
42AQI
36AQI
39AQI
39AQI
2025 Days Vs Air Quality
Kasugacho, Higashiomi, Shiga, Japan
74%
193
26%
69
Total number of days with different AQI categories in last 263 days in 2025 (102 days remaining)
Under WHO’s Safe Air Quality Limits: 74%
Health Risk Level:
Low
In 2025, 74% of 263 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, Higashiomi, Shiga, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI
34AQI
30AQI
28AQI
29AQI
38AQI
35AQI
30AQI
32AQI
26AQI
26AQI
41AQI
28AQI
51AQI
39AQI
35AQI
32AQI
30AQI
39AQI
40AQI
39AQI
44AQI
66AQI
57AQI
44AQI
37AQI
31AQI
34AQI
31AQI
38AQI
71AQI
70AQI
48AQI
51AQI
40AQI
39AQI
33AQI
37AQI
31AQI
30AQI
30AQI
30AQI
39AQI
32AQI
34AQI
31AQI
39AQI
39AQI
32AQI
32AQI
29AQI
32AQI
31AQI
32AQI
32AQI
38AQI
50AQI
54AQI
64AQI
64AQI
71AQI
44AQI
40AQI
32AQI
36AQI
34AQI
38AQI
36AQI
39AQI
39AQI
36AQI
48AQI
41AQI
39AQI
24AQI
26AQI
28AQI
26AQI
41AQI
58AQI
61AQI
76AQI
75AQI
83AQI
84AQI
86AQI
48AQI
49AQI
36AQI
38AQI
35AQI
31AQI
24AQI
26AQI
39AQI
40AQI
47AQI
51AQI
45AQI
57AQI
53AQI
55AQI
31AQI
50AQI
25AQI
49AQI
50AQI
62AQI
65AQI
55AQI
44AQI
48AQI
25AQI
28AQI
62AQI
53AQI
63AQI
47AQI
58AQI
64AQI
56AQI
39AQI
49AQI
39AQI
45AQI
27AQI
32AQI
33AQI
29AQI
28AQI
31AQI
44AQI
52AQI
58AQI
58AQI
55AQI
39AQI
51AQI
53AQI
69AQI
62AQI
40AQI
53AQI
41AQI
29AQI
31AQI
31AQI
32AQI
37AQI
37AQI
33AQI
38AQI
49AQI
27AQI
44AQI
38AQI
50AQI
56AQI
71AQI
46AQI
32AQI
35AQI
42AQI
48AQI
33AQI
28AQI
43AQI
41AQI
50AQI
55AQI
59AQI
53AQI
43AQI
43AQI
36AQI
36AQI
34AQI
50AQI
41AQI
49AQI
58AQI
66AQI
100AQI
84AQI
92AQI
94AQI
77AQI
67AQI
80AQI
88AQI
71AQI
57AQI
56AQI
54AQI
43AQI
49AQI
49AQI
34AQI
38AQI
36AQI
35AQI
38AQI
40AQI
44AQI
43AQI
35AQI
30AQI
29AQI
33AQI
42AQI
45AQI
44AQI
46AQI
44AQI
48AQI
61AQI
52AQI
51AQI
44AQI
41AQI
44AQI
42AQI
33AQI
34AQI
36AQI
44AQI
46AQI
46AQI
44AQI
45AQI
46AQI
47AQI
47AQI
44AQI
50AQI
55AQI
55AQI
57AQI
53AQI
52AQI
55AQI
53AQI
53AQI
42AQI
35AQI
35AQI
27AQI
23AQI
27AQI
32AQI
33AQI
36AQI
34AQI
28AQI
29AQI
27AQI
39AQI
34AQI
43AQI
49AQI
36AQI
32AQI
38AQI
39AQI
48AQI
46AQI
42AQI
44AQI
55AQI
47AQI
34AQI
No. of days
202544AQI
Highest AQI recorded in
July55AQI
Lowest AQI recorded in
September34AQI
202438AQI
Highest AQI recorded in
April49AQI
Lowest AQI recorded in
December32AQI
202342AQI
Highest AQI recorded in
April53AQI
Lowest AQI recorded in
August31AQI
202241AQI
Highest AQI recorded in
March51AQI
Lowest AQI recorded in
August21AQI
202138AQI
Highest AQI recorded in
May43AQI
Lowest AQI recorded in
August30AQI
202037AQI
Highest AQI recorded in
August54AQI
Lowest AQI recorded in
July27AQI
Most & Least Polluted Years Over the Last 6 Years
Kasugacho's annual 2025 AQI (44) shows an average percentage change of 12.8% (worsened AQI) compared to previous years: 2020 (37), 2021 (38), 2022 (41), 2023 (42), 2024 (38).