Moriyama, 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
Moriyama, 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
Moriyama, Shiga, Japan
4 AM2nd Aug 2025
7 PM
3 AM3rd Aug 2025
AQI
AQI
58AQI
37AQI
In the last 24 hours,
Moriyama's AQI reached its highest point of 58 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
Moriyama, Shiga, Japan
26°C22/30°C
25°C23/29°C
26°C23/30°C
26°C21/31°C
27°C24/30°C
27°C24/30°C
27°C24/31°C
26°C22/28°C
26°C23/29°C
26°C24/29°C
25°C23/28°C
26°C24/30°C
24°C23/26°C
22°C20/23°C
24°C21/26°C
25°C23/28°C
26°C23/30°C
27°C24/31°C
28°C25/31°C
28°C25/33°C
27°C23/32°C
27°C23/32°C
27°C24/32°C
27°C22/33°C
27°C22/32°C
28°C25/32°C
28°C26/33°C
28°C25/33°C
27°C24/30°C
--°C/°C
--°C/°C
53AQI
43AQI
52AQI
50AQI
2025 Days Vs Air Quality
Moriyama, Shiga, Japan
74%
158
26%
55
Total number of days with different AQI categories in last 214 days in 2025 (151 days remaining)
Under WHO’s Safe Air Quality Limits: 74%
Health Risk Level:
Low
In 2025, 74% 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
Moriyama, Shiga, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI
35AQI
30AQI
29AQI
28AQI
34AQI
34AQI
30AQI
31AQI
25AQI
24AQI
38AQI
28AQI
49AQI
38AQI
35AQI
32AQI
30AQI
37AQI
39AQI
37AQI
44AQI
63AQI
56AQI
44AQI
39AQI
32AQI
34AQI
32AQI
37AQI
74AQI
68AQI
47AQI
50AQI
40AQI
39AQI
33AQI
37AQI
31AQI
31AQI
31AQI
31AQI
35AQI
31AQI
33AQI
30AQI
37AQI
38AQI
32AQI
32AQI
29AQI
31AQI
31AQI
32AQI
32AQI
36AQI
44AQI
56AQI
63AQI
68AQI
74AQI
47AQI
43AQI
33AQI
39AQI
35AQI
37AQI
36AQI
38AQI
34AQI
31AQI
47AQI
38AQI
37AQI
22AQI
25AQI
27AQI
25AQI
40AQI
55AQI
59AQI
72AQI
73AQI
76AQI
80AQI
84AQI
47AQI
45AQI
34AQI
35AQI
30AQI
28AQI
22AQI
24AQI
37AQI
38AQI
46AQI
48AQI
45AQI
53AQI
52AQI
50AQI
31AQI
48AQI
26AQI
47AQI
49AQI
61AQI
62AQI
52AQI
43AQI
48AQI
25AQI
24AQI
64AQI
52AQI
61AQI
47AQI
57AQI
66AQI
57AQI
40AQI
47AQI
38AQI
44AQI
26AQI
30AQI
31AQI
32AQI
28AQI
33AQI
46AQI
54AQI
59AQI
57AQI
56AQI
41AQI
52AQI
54AQI
68AQI
51AQI
36AQI
53AQI
39AQI
27AQI
29AQI
32AQI
27AQI
40AQI
35AQI
33AQI
38AQI
49AQI
27AQI
43AQI
39AQI
47AQI
52AQI
66AQI
46AQI
28AQI
31AQI
38AQI
45AQI
32AQI
26AQI
38AQI
39AQI
47AQI
51AQI
57AQI
53AQI
53AQI
45AQI
40AQI
39AQI
37AQI
50AQI
43AQI
47AQI
56AQI
63AQI
90AQI
83AQI
94AQI
96AQI
80AQI
70AQI
78AQI
85AQI
71AQI
58AQI
58AQI
55AQI
45AQI
50AQI
50AQI
40AQI
42AQI
38AQI
33AQI
35AQI
37AQI
42AQI
41AQI
36AQI
29AQI
28AQI
30AQI
40AQI
44AQI
42AQI
44AQI
37AQI
38AQI
46AQI
45AQI
42AQI
43AQI
54AQI
44AQI
No. of days
202544AQI
Highest AQI recorded in
July54AQI
Lowest AQI recorded in
January37AQI
202437AQI
Highest AQI recorded in
April49AQI
Lowest AQI recorded in
January31AQI
202338AQI
Highest AQI recorded in
April47AQI
Lowest AQI recorded in
August28AQI
202238AQI
Highest AQI recorded in
May47AQI
Lowest AQI recorded in
August20AQI
202136AQI
Highest AQI recorded in
June44AQI
Lowest AQI recorded in
January33AQI
202034AQI
Highest AQI recorded in
August43AQI
Lowest AQI recorded in
July29AQI
Most & Least Polluted Years Over the Last 6 Years
Moriyama's annual 2025 AQI (44) shows an average percentage change of 20.3% (worsened AQI) compared to previous years: 2020 (34), 2021 (36), 2022 (38), 2023 (38), 2024 (37).