Chuo, Soja, Okayama, 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
Chuo, Soja, Okayama, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (4th 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: 3rd Jun - 4th Jun 2026
Chuo, Soja, Okayama, Japan
4 AM3rd Jun 2026
7 PM
3 AM4th Jun 2026
21AQI
8AQI
33AQI
26AQI
In the last 24 hours,
Chuo's AQI reached its highest point of 33 at 11 PM during the Night, while the lowest point, 8, was recorded at 4 PM during the Day between 3rd Jun and 4th Jun 2026.
Day & Night AQI Trend : May - Jun 2026
Chuo, Soja, Okayama, Japan
14°C9/20°C
17°C11/24°C
17°C13/20°C
14°C8/21°C
14°C7/22°C
16°C9/23°C
17°C11/23°C
18°C12/25°C
18°C12/25°C
18°C11/26°C
19°C12/26°C
20°C13/29°C
20°C14/28°C
20°C13/28°C
19°C14/25°C
20°C19/21°C
18°C14/23°C
17°C13/19°C
20°C17/25°C
21°C16/28°C
21°C16/27°C
19°C18/20°C
20°C19/22°C
22°C13/28°C
20°C12/28°C
22°C17/29°C
21°C16/28°C
19°C18/20°C
21°C15/25°C
20°C14/27°C
43AQI
39AQI
43AQI
39AQI
2026 Days Vs Air Quality
Chuo, Soja, Okayama, Japan
71%
110
29%
45
Total number of days with different AQI categories in last 155 days in 2026 (210 days remaining)
Under WHO’s Safe Air Quality Limits: 71%
Health Risk Level:
Low
In 2026, 71% of 155 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
Chuo, Soja, Okayama, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI (US)
25AQI (US)
22AQI (US)
41AQI (US)
46AQI (US)
33AQI (US)
51AQI (US)
35AQI (US)
34AQI (US)
49AQI (US)
36AQI (US)
30AQI (US)
37AQI (US)
27AQI (US)
46AQI (US)
73AQI (US)
77AQI (US)
59AQI (US)
56AQI (US)
24AQI (US)
13AQI (US)
25AQI (US)
37AQI (US)
43AQI (US)
42AQI (US)
29AQI (US)
41AQI (US)
29AQI (US)
19AQI (US)
37AQI (US)
33AQI (US)
41AQI (US)
44AQI (US)
25AQI (US)
40AQI (US)
51AQI (US)
49AQI (US)
18AQI (US)
14AQI (US)
34AQI (US)
41AQI (US)
48AQI (US)
51AQI (US)
54AQI (US)
72AQI (US)
76AQI (US)
54AQI (US)
20AQI (US)
29AQI (US)
38AQI (US)
42AQI (US)
66AQI (US)
57AQI (US)
50AQI (US)
45AQI (US)
13AQI (US)
11AQI (US)
49AQI (US)
20AQI (US)
36AQI (US)
62AQI (US)
38AQI (US)
51AQI (US)
51AQI (US)
56AQI (US)
37AQI (US)
18AQI (US)
46AQI (US)
58AQI (US)
57AQI (US)
60AQI (US)
36AQI (US)
44AQI (US)
58AQI (US)
45AQI (US)
48AQI (US)
50AQI (US)
54AQI (US)
59AQI (US)
49AQI (US)
60AQI (US)
58AQI (US)
51AQI (US)
47AQI (US)
17AQI (US)
41AQI (US)
72AQI (US)
77AQI (US)
78AQI (US)
18AQI (US)
13AQI (US)
53AQI (US)
56AQI (US)
35AQI (US)
21AQI (US)
51AQI (US)
36AQI (US)
41AQI (US)
33AQI (US)
46AQI (US)
42AQI (US)
37AQI (US)
38AQI (US)
41AQI (US)
34AQI (US)
34AQI (US)
36AQI (US)
31AQI (US)
32AQI (US)
30AQI (US)
40AQI (US)
42AQI (US)
30AQI (US)
26AQI (US)
46AQI (US)
49AQI (US)
51AQI (US)
52AQI (US)
38AQI (US)
25AQI (US)
48AQI (US)
55AQI (US)
55AQI (US)
22AQI (US)
20AQI (US)
28AQI (US)
37AQI (US)
38AQI (US)
22AQI (US)
30AQI (US)
33AQI (US)
40AQI (US)
36AQI (US)
32AQI (US)
33AQI (US)
78AQI (US)
64AQI (US)
53AQI (US)
46AQI (US)
62AQI (US)
64AQI (US)
68AQI (US)
61AQI (US)
64AQI (US)
54AQI (US)
40AQI (US)
16AQI (US)
30AQI (US)
29AQI (US)
25AQI (US)
44AQI (US)
47AQI (US)
15AQI (US)
13AQI (US)
25AQI (US)
38AQI (US)
41AQI (US)
49AQI (US)
38AQI (US)
43AQI (US)
25AQI (US)
No. of days
202641AQI (US)
Highest AQI (US) recorded in
March49AQI (US)
Lowest AQI (US) recorded in
June25AQI (US)
202548AQI (US)
Highest AQI (US) recorded in
November56AQI (US)
Lowest AQI (US) recorded in
September32AQI (US)
202444AQI (US)
Highest AQI (US) recorded in
April55AQI (US)
Lowest AQI (US) recorded in
December34AQI (US)
202348AQI (US)
Highest AQI (US) recorded in
April55AQI (US)
Lowest AQI (US) recorded in
August39AQI (US)
202248AQI (US)
Highest AQI (US) recorded in
April56AQI (US)
Lowest AQI (US) recorded in
December37AQI (US)
202145AQI (US)
Highest AQI (US) recorded in
June52AQI (US)
Lowest AQI (US) recorded in
August40AQI (US)
202043AQI (US)
Highest AQI (US) recorded in
August61AQI (US)
Lowest AQI (US) recorded in
September30AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Chuo's annual 2026 AQI (US) (41) shows an average percentage change of -10.6% (improved AQI (US)) compared to previous years: 2020 (43), 2021 (45), 2022 (48), 2023 (48), 2024 (44), 2025 (48).