Chuocho, Oyama, Tochigi, 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
Chuocho, Oyama, Tochigi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (13th August):
On this day, AQI across the 3 years varied significantly: 2026 ranks 2nd highest AQI at 39 of Good air quality, showing improvement over 2024 on the same day.
Day & Night AQI Trend: 12th Aug - 13th Aug 2026
Chuocho, Oyama, Tochigi, Japan
4 AM12th Aug 2026
6 PM
3 AM13th Aug 2026
34AQI
21AQI
57AQI
31AQI
In the last 24 hours,
Chuocho's AQI reached its highest point of 57 at 10 PM during the Night, while the lowest point, 21, was recorded at 5 PM during the Day between 12th Aug and 13th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Chuocho, Oyama, Tochigi, Japan
31°C26/37°C
30°C26/36°C
27°C25/30°C
27°C24/29°C
28°C24/33°C
32°C26/37°C
32°C27/38°C
32°C27/39°C
31°C26/38°C
27°C25/33°C
28°C24/34°C
27°C25/32°C
25°C22/31°C
25°C23/30°C
28°C23/34°C
30°C25/36°C
29°C26/33°C
30°C25/36°C
29°C23/35°C
23°C22/25°C
24°C20/29°C
26°C21/32°C
28°C25/33°C
30°C25/35°C
30°C26/36°C
28°C24/33°C
26°C23/31°C
22°C20/26°C
22°C21/23°C
25°C22/30°C
42AQI
38AQI
43AQI
36AQI
2026 Days Vs Air Quality
Chuocho, Oyama, Tochigi, Japan
86%
194
14%
31
Total number of days with different AQI categories in last 225 days in 2026 (140 days remaining)
Under WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2026, 86% of 225 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
Chuocho, Oyama, Tochigi, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI (US)
24AQI (US)
23AQI (US)
23AQI (US)
36AQI (US)
26AQI (US)
37AQI (US)
37AQI (US)
29AQI (US)
44AQI (US)
41AQI (US)
18AQI (US)
30AQI (US)
15AQI (US)
35AQI (US)
48AQI (US)
46AQI (US)
35AQI (US)
40AQI (US)
34AQI (US)
15AQI (US)
21AQI (US)
29AQI (US)
37AQI (US)
37AQI (US)
13AQI (US)
24AQI (US)
23AQI (US)
17AQI (US)
34AQI (US)
37AQI (US)
37AQI (US)
18AQI (US)
28AQI (US)
36AQI (US)
51AQI (US)
52AQI (US)
16AQI (US)
12AQI (US)
32AQI (US)
37AQI (US)
62AQI (US)
30AQI (US)
34AQI (US)
65AQI (US)
66AQI (US)
46AQI (US)
17AQI (US)
29AQI (US)
31AQI (US)
31AQI (US)
43AQI (US)
42AQI (US)
48AQI (US)
36AQI (US)
32AQI (US)
14AQI (US)
39AQI (US)
46AQI (US)
37AQI (US)
88AQI (US)
45AQI (US)
60AQI (US)
63AQI (US)
51AQI (US)
46AQI (US)
46AQI (US)
47AQI (US)
57AQI (US)
59AQI (US)
68AQI (US)
41AQI (US)
48AQI (US)
60AQI (US)
59AQI (US)
56AQI (US)
56AQI (US)
37AQI (US)
32AQI (US)
48AQI (US)
49AQI (US)
53AQI (US)
44AQI (US)
54AQI (US)
21AQI (US)
17AQI (US)
48AQI (US)
56AQI (US)
58AQI (US)
32AQI (US)
14AQI (US)
26AQI (US)
46AQI (US)
45AQI (US)
35AQI (US)
24AQI (US)
39AQI (US)
20AQI (US)
31AQI (US)
48AQI (US)
36AQI (US)
30AQI (US)
33AQI (US)
38AQI (US)
39AQI (US)
32AQI (US)
38AQI (US)
35AQI (US)
38AQI (US)
35AQI (US)
40AQI (US)
44AQI (US)
34AQI (US)
30AQI (US)
44AQI (US)
49AQI (US)
47AQI (US)
41AQI (US)
38AQI (US)
38AQI (US)
47AQI (US)
50AQI (US)
43AQI (US)
28AQI (US)
18AQI (US)
30AQI (US)
32AQI (US)
26AQI (US)
24AQI (US)
25AQI (US)
27AQI (US)
34AQI (US)
41AQI (US)
34AQI (US)
33AQI (US)
85AQI (US)
68AQI (US)
53AQI (US)
49AQI (US)
62AQI (US)
59AQI (US)
60AQI (US)
54AQI (US)
58AQI (US)
48AQI (US)
40AQI (US)
24AQI (US)
15AQI (US)
25AQI (US)
24AQI (US)
26AQI (US)
33AQI (US)
33AQI (US)
11AQI (US)
23AQI (US)
22AQI (US)
20AQI (US)
21AQI (US)
20AQI (US)
23AQI (US)
22AQI (US)
25AQI (US)
24AQI (US)
25AQI (US)
28AQI (US)
17AQI (US)
18AQI (US)
25AQI (US)
25AQI (US)
29AQI (US)
22AQI (US)
19AQI (US)
19AQI (US)
21AQI (US)
22AQI (US)
26AQI (US)
29AQI (US)
26AQI (US)
28AQI (US)
28AQI (US)
24AQI (US)
25AQI (US)
22AQI (US)
20AQI (US)
25AQI (US)
24AQI (US)
22AQI (US)
24AQI (US)
23AQI (US)
23AQI (US)
27AQI (US)
28AQI (US)
25AQI (US)
41AQI (US)
47AQI (US)
42AQI (US)
53AQI (US)
43AQI (US)
25AQI (US)
33AQI (US)
41AQI (US)
49AQI (US)
62AQI (US)
46AQI (US)
32AQI (US)
33AQI (US)
32AQI (US)
27AQI (US)
42AQI (US)
36AQI (US)
36AQI (US)
49AQI (US)
47AQI (US)
52AQI (US)
23AQI (US)
37AQI (US)
40AQI (US)
38AQI (US)
43AQI (US)
38AQI (US)
36AQI (US)
30AQI (US)
34AQI (US)
31AQI (US)
39AQI (US)
30AQI (US)
37AQI (US)
50AQI (US)
36AQI (US)
40AQI (US)
24AQI (US)
34AQI (US)
38AQI (US)
No. of days
202636AQI (US)
Highest AQI (US) recorded in
March50AQI (US)
Lowest AQI (US) recorded in
June24AQI (US)
202538AQI (US)
Highest AQI (US) recorded in
October49AQI (US)
Lowest AQI (US) recorded in
May21AQI (US)
202436AQI (US)
Highest AQI (US) recorded in
September51AQI (US)
Lowest AQI (US) recorded in
January20AQI (US)
202326AQI (US)
Highest AQI (US) recorded in
December27AQI (US)
Lowest AQI (US) recorded in
November18AQI (US)
202144AQI (US)
Highest AQI (US) recorded in
January45AQI (US)
Lowest AQI (US) recorded in
February43AQI (US)
202047AQI (US)
Highest AQI (US) recorded in
December69AQI (US)
Lowest AQI (US) recorded in
April37AQI (US)
Most & Least Polluted Years Over the Last 6 Years
Chuocho's annual 2026 AQI (US) (36) shows an average percentage change of -1.6% (improved AQI (US)) compared to previous years: 2020 (47), 2021 (44), 2023 (26), 2024 (36), 2025 (38).