Nishihama, Aki, Kochi, 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
Nishihama, Aki, Kochi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (2nd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 39 of Good air quality, showing improvement over 2024 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Nishihama, Aki, Kochi, Japan
5 AM2nd Aug 2025
7 PM
4 AM3rd Aug 2025
58AQI
37AQI
51AQI
37AQI
In the last 24 hours,
Nishihama's AQI reached its highest point of 58 at 2 PM during the Day, while the lowest point, 37, was recorded at 2 AM during the Night between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Nishihama, Aki, Kochi, Japan
27°C24/31°C
28°C24/32°C
28°C23/32°C
28°C24/32°C
27°C25/31°C
27°C24/30°C
27°C23/31°C
26°C24/29°C
26°C24/29°C
26°C24/28°C
25°C23/26°C
25°C22/28°C
25°C22/28°C
24°C22/26°C
25°C22/27°C
25°C23/28°C
26°C23/29°C
26°C23/30°C
27°C23/31°C
26°C22/31°C
26°C22/30°C
26°C23/30°C
25°C22/29°C
26°C22/30°C
26°C23/30°C
27°C23/31°C
27°C23/31°C
27°C23/31°C
27°C24/32°C
28°C22/33°C
--°C/°C
50AQI
42AQI
51AQI
47AQI
2025 Days Vs Air Quality
Nishihama, Aki, Kochi, Japan
77%
164
23%
50
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Under WHO’s Safe Air Quality Limits: 77%
Health Risk Level:
Low
In 2025, 77% of 215 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
Nishihama, Aki, Kochi, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
33AQI
34AQI
30AQI
27AQI
29AQI
29AQI
28AQI
28AQI
26AQI
29AQI
28AQI
32AQI
40AQI
37AQI
33AQI
31AQI
29AQI
30AQI
31AQI
36AQI
45AQI
51AQI
57AQI
41AQI
38AQI
31AQI
32AQI
30AQI
38AQI
55AQI
53AQI
36AQI
45AQI
34AQI
38AQI
32AQI
33AQI
31AQI
30AQI
31AQI
32AQI
31AQI
30AQI
32AQI
30AQI
34AQI
43AQI
35AQI
37AQI
31AQI
32AQI
35AQI
34AQI
34AQI
34AQI
37AQI
50AQI
49AQI
60AQI
64AQI
43AQI
38AQI
29AQI
34AQI
32AQI
32AQI
36AQI
35AQI
30AQI
32AQI
45AQI
43AQI
33AQI
25AQI
39AQI
25AQI
35AQI
36AQI
51AQI
55AQI
59AQI
60AQI
62AQI
71AQI
61AQI
57AQI
44AQI
38AQI
36AQI
33AQI
29AQI
25AQI
25AQI
35AQI
45AQI
40AQI
39AQI
56AQI
55AQI
54AQI
55AQI
41AQI
47AQI
27AQI
40AQI
45AQI
54AQI
58AQI
45AQI
45AQI
38AQI
34AQI
35AQI
45AQI
54AQI
51AQI
46AQI
44AQI
53AQI
48AQI
39AQI
45AQI
36AQI
37AQI
27AQI
31AQI
29AQI
38AQI
30AQI
34AQI
44AQI
52AQI
57AQI
53AQI
50AQI
43AQI
53AQI
57AQI
60AQI
43AQI
38AQI
48AQI
30AQI
30AQI
29AQI
33AQI
35AQI
33AQI
34AQI
37AQI
43AQI
49AQI
28AQI
45AQI
43AQI
50AQI
51AQI
56AQI
37AQI
31AQI
35AQI
46AQI
39AQI
31AQI
34AQI
44AQI
41AQI
48AQI
52AQI
56AQI
52AQI
44AQI
40AQI
34AQI
35AQI
47AQI
50AQI
56AQI
58AQI
58AQI
56AQI
66AQI
69AQI
80AQI
99AQI
84AQI
75AQI
76AQI
82AQI
66AQI
52AQI
49AQI
42AQI
42AQI
51AQI
56AQI
40AQI
38AQI
34AQI
32AQI
30AQI
30AQI
28AQI
27AQI
26AQI
25AQI
23AQI
22AQI
25AQI
29AQI
31AQI
43AQI
39AQI
34AQI
36AQI
43AQI
43AQI
40AQI
44AQI
48AQI
41AQI
No. of days
202541AQI
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
January34AQI
202434AQI
Highest AQI recorded in
August40AQI
Lowest AQI recorded in
October28AQI
202335AQI
Highest AQI recorded in
April46AQI
Lowest AQI recorded in
August25AQI
202236AQI
Highest AQI recorded in
May45AQI
Lowest AQI recorded in
September31AQI
202133AQI
Highest AQI recorded in
May38AQI
Lowest AQI recorded in
January28AQI
202034AQI
Highest AQI recorded in
August52AQI
Lowest AQI recorded in
October26AQI
Most & Least Polluted Years Over the Last 6 Years
Nishihama's annual 2025 AQI (41) shows an average percentage change of 20.3% (worsened AQI) compared to previous years: 2020 (34), 2021 (33), 2022 (36), 2023 (35), 2024 (34).