Higashiomi, Shiga, 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
Higashiomi, Shiga, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (1st August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 44 of Good air quality, showing improvement over 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Higashiomi, Shiga, Japan
4 AM2nd Aug 2025
7 PM
3 AM3rd Aug 2025
AQI
AQI
55AQI
38AQI
In the last 24 hours,
Higashiomi's AQI reached its highest point of 55 at 2 PM during the Night, while the lowest point, undefined, was recorded at 3 AM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Higashiomi, Shiga, Japan
27°C23/31°C
27°C24/32°C
27°C24/32°C
28°C24/33°C
27°C24/31°C
28°C24/32°C
28°C24/33°C
27°C24/31°C
26°C23/30°C
26°C23/30°C
26°C23/30°C
26°C24/30°C
25°C23/28°C
24°C23/26°C
25°C22/29°C
26°C23/30°C
27°C23/31°C
27°C24/32°C
28°C24/33°C
29°C24/34°C
29°C24/34°C
28°C25/33°C
28°C24/33°C
28°C24/34°C
29°C24/34°C
30°C25/35°C
30°C25/35°C
29°C25/35°C
29°C25/34°C
--°C/°C
--°C/°C
57AQI
46AQI
53AQI
47AQI
2025 Days Vs Air Quality
Higashiomi, Shiga, Japan
73%
155
27%
58
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Under WHO’s Safe Air Quality Limits: 73%
Health Risk Level:
Low
In 2025, 73% 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
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
44AQI
38AQI
39AQI
48AQI
46AQI
42AQI
44AQI
55AQI
44AQI
No. of days
202545AQI
Highest AQI recorded in
July55AQI
Lowest AQI recorded in
January38AQI
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
Higashiomi's annual 2025 AQI (45) shows an average percentage change of 14.008% (worsened AQI) compared to previous years: 2020 (37), 2021 (38), 2022 (41), 2023 (42), 2024 (38).