Masuda, Shimane, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
June Air Quality Analysis
Masuda, Shimane, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (2nd June):
On this day, AQI across the 5 years varied significantly: 2026 ranks the most lowest AQI at 25 of Good air quality, showing improvement over 2025, 2024, 2023 and 2022 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 1st Jun - 2nd Jun 2026
Masuda, Shimane, Japan
5 AM1st Jun 2026
7 PM
4 AM2nd Jun 2026
32AQI
24AQI
33AQI
24AQI
In the last 24 hours,
Masuda's AQI reached its highest point of 33 at 2 AM during the Night, while the lowest point, 24, was recorded at 8 PM during the Night between 1st Jun and 2nd Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Masuda, Shimane, Japan
14°C11/16°C
14°C10/19°C
15°C11/19°C
17°C13/21°C
16°C14/17°C
14°C10/17°C
15°C10/19°C
16°C12/20°C
16°C12/20°C
17°C14/20°C
17°C14/20°C
17°C13/21°C
18°C14/22°C
18°C14/23°C
20°C16/24°C
19°C15/24°C
19°C16/21°C
20°C18/21°C
18°C15/19°C
18°C15/21°C
20°C18/21°C
20°C17/24°C
20°C16/25°C
19°C19/20°C
20°C20/21°C
19°C15/22°C
20°C16/24°C
22°C17/26°C
21°C17/25°C
19°C18/20°C
45AQI
36AQI
45AQI
35AQI
2026 Days Vs Air Quality
Masuda, Shimane, Japan
82%
126
18%
27
Total number of days with different AQI categories in last 153 days in 2026 (212 days remaining)
Under WHO’s Safe Air Quality Limits: 82%
Health Risk Level:
Low
In 2026, 82% of 153 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
Masuda, Shimane, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
20AQI (US)
19AQI (US)
31AQI (US)
35AQI (US)
47AQI (US)
23AQI (US)
28AQI (US)
24AQI (US)
15AQI (US)
30AQI (US)
30AQI (US)
28AQI (US)
34AQI (US)
16AQI (US)
45AQI (US)
59AQI (US)
51AQI (US)
58AQI (US)
62AQI (US)
36AQI (US)
18AQI (US)
24AQI (US)
38AQI (US)
40AQI (US)
12AQI (US)
16AQI (US)
42AQI (US)
26AQI (US)
32AQI (US)
19AQI (US)
18AQI (US)
46AQI (US)
42AQI (US)
27AQI (US)
33AQI (US)
42AQI (US)
46AQI (US)
14AQI (US)
17AQI (US)
36AQI (US)
34AQI (US)
44AQI (US)
50AQI (US)
51AQI (US)
41AQI (US)
38AQI (US)
48AQI (US)
25AQI (US)
26AQI (US)
42AQI (US)
38AQI (US)
48AQI (US)
31AQI (US)
23AQI (US)
10AQI (US)
15AQI (US)
13AQI (US)
48AQI (US)
42AQI (US)
36AQI (US)
52AQI (US)
22AQI (US)
44AQI (US)
50AQI (US)
48AQI (US)
50AQI (US)
37AQI (US)
34AQI (US)
58AQI (US)
54AQI (US)
60AQI (US)
38AQI (US)
44AQI (US)
59AQI (US)
54AQI (US)
46AQI (US)
50AQI (US)
54AQI (US)
44AQI (US)
28AQI (US)
42AQI (US)
44AQI (US)
58AQI (US)
44AQI (US)
20AQI (US)
52AQI (US)
66AQI (US)
72AQI (US)
52AQI (US)
14AQI (US)
13AQI (US)
54AQI (US)
50AQI (US)
42AQI (US)
40AQI (US)
44AQI (US)
22AQI (US)
24AQI (US)
31AQI (US)
45AQI (US)
30AQI (US)
40AQI (US)
38AQI (US)
38AQI (US)
29AQI (US)
20AQI (US)
37AQI (US)
26AQI (US)
33AQI (US)
36AQI (US)
41AQI (US)
43AQI (US)
24AQI (US)
30AQI (US)
38AQI (US)
38AQI (US)
44AQI (US)
46AQI (US)
38AQI (US)
27AQI (US)
49AQI (US)
42AQI (US)
33AQI (US)
26AQI (US)
30AQI (US)
29AQI (US)
32AQI (US)
26AQI (US)
26AQI (US)
22AQI (US)
33AQI (US)
30AQI (US)
40AQI (US)
33AQI (US)
32AQI (US)
76AQI (US)
62AQI (US)
53AQI (US)
46AQI (US)
60AQI (US)
66AQI (US)
70AQI (US)
62AQI (US)
63AQI (US)
56AQI (US)
42AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
24AQI (US)
26AQI (US)
28AQI (US)
25AQI (US)
31AQI (US)
35AQI (US)
46AQI (US)
35AQI (US)
41AQI (US)
27AQI (US)
No. of days
202638AQI (US)
Highest AQI (US) recorded in
March46AQI (US)
Lowest AQI (US) recorded in
June27AQI (US)
202542AQI (US)
Highest AQI (US) recorded in
November49AQI (US)
Lowest AQI (US) recorded in
September29AQI (US)
202435AQI (US)
Highest AQI (US) recorded in
April46AQI (US)
Lowest AQI (US) recorded in
July27AQI (US)
202338AQI (US)
Highest AQI (US) recorded in
April48AQI (US)
Lowest AQI (US) recorded in
August29AQI (US)
202237AQI (US)
Highest AQI (US) recorded in
May49AQI (US)
Lowest AQI (US) recorded in
December30AQI (US)
202135AQI (US)
Highest AQI (US) recorded in
June44AQI (US)
Lowest AQI (US) recorded in
September30AQI (US)
202035AQI (US)
Highest AQI (US) recorded in
August52AQI (US)
Lowest AQI (US) recorded in
July27AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Masuda's annual 2026 AQI (US) (38) shows an average percentage change of 3.1% (worsened AQI (US)) compared to previous years: 2020 (35), 2021 (35), 2022 (37), 2023 (38), 2024 (35), 2025 (42).