Sonota, Sakaidecho, Kagawa, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
October Air Quality Analysis
Sonota, Sakaidecho, Kagawa, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (4th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 54 of Moderate air quality, showing improvement over 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Oct - 5th Oct 2025
Sonota, Sakaidecho, Kagawa, Japan
5 AM4th Oct 2025
6 PM
4 AM5th Oct 2025
AQI
AQI
60AQI
41AQI
In the last 24 hours,
Sonota's AQI reached its highest point of 60 at 9 PM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 4th Oct and 5th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Sonota, Sakaidecho, Kagawa, Japan
27°C25/30°C
27°C25/30°C
29°C26/31°C
28°C26/30°C
29°C27/31°C
28°C26/31°C
26°C24/29°C
27°C24/30°C
27°C25/30°C
28°C26/30°C
29°C26/31°C
28°C26/31°C
28°C26/31°C
27°C24/29°C
25°C23/28°C
26°C24/28°C
25°C22/28°C
23°C21/26°C
23°C22/24°C
25°C23/29°C
25°C24/27°C
26°C24/28°C
24°C22/26°C
23°C21/25°C
24°C21/26°C
23°C20/25°C
24°C21/26°C
23°C20/25°C
21°C20/23°C
--°C/°C
--°C/°C
34AQI
31AQI
35AQI
35AQI
2025 Days Vs Air Quality
Sonota, Sakaidecho, Kagawa, Japan
70%
195
29%
81
0.3%
1
Total number of days with different AQI categories in last 277 days in 2025 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 70%
Health Risk Level:
Low
In 2025, 70% of 277 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
Sonota, Sakaidecho, Kagawa, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
34AQI
45AQI
36AQI
32AQI
32AQI
44AQI
33AQI
32AQI
28AQI
27AQI
28AQI
30AQI
34AQI
44AQI
38AQI
34AQI
31AQI
29AQI
41AQI
37AQI
44AQI
56AQI
67AQI
68AQI
44AQI
43AQI
33AQI
37AQI
31AQI
42AQI
55AQI
66AQI
47AQI
50AQI
39AQI
39AQI
31AQI
33AQI
31AQI
31AQI
31AQI
36AQI
40AQI
32AQI
39AQI
30AQI
45AQI
41AQI
39AQI
36AQI
34AQI
33AQI
35AQI
35AQI
35AQI
38AQI
39AQI
65AQI
78AQI
99AQI
89AQI
56AQI
45AQI
34AQI
39AQI
35AQI
38AQI
41AQI
42AQI
40AQI
52AQI
54AQI
47AQI
36AQI
26AQI
39AQI
29AQI
36AQI
43AQI
57AQI
64AQI
69AQI
73AQI
72AQI
79AQI
81AQI
55AQI
49AQI
38AQI
39AQI
39AQI
43AQI
27AQI
37AQI
38AQI
48AQI
44AQI
44AQI
61AQI
63AQI
62AQI
57AQI
42AQI
52AQI
29AQI
47AQI
50AQI
62AQI
63AQI
60AQI
43AQI
51AQI
44AQI
33AQI
62AQI
59AQI
58AQI
56AQI
45AQI
59AQI
57AQI
41AQI
51AQI
39AQI
44AQI
29AQI
35AQI
27AQI
35AQI
34AQI
37AQI
51AQI
55AQI
63AQI
60AQI
59AQI
46AQI
50AQI
57AQI
66AQI
57AQI
40AQI
52AQI
37AQI
27AQI
31AQI
36AQI
44AQI
43AQI
42AQI
40AQI
45AQI
57AQI
31AQI
47AQI
45AQI
57AQI
60AQI
69AQI
49AQI
37AQI
43AQI
64AQI
59AQI
41AQI
34AQI
46AQI
36AQI
49AQI
50AQI
57AQI
57AQI
55AQI
44AQI
43AQI
43AQI
46AQI
54AQI
57AQI
58AQI
61AQI
60AQI
96AQI
96AQI
108AQI
91AQI
70AQI
66AQI
71AQI
78AQI
75AQI
58AQI
52AQI
48AQI
40AQI
54AQI
58AQI
40AQI
38AQI
36AQI
34AQI
35AQI
44AQI
41AQI
39AQI
29AQI
25AQI
24AQI
27AQI
38AQI
43AQI
41AQI
45AQI
41AQI
42AQI
57AQI
45AQI
46AQI
47AQI
50AQI
48AQI
46AQI
34AQI
33AQI
40AQI
47AQI
44AQI
42AQI
37AQI
44AQI
43AQI
44AQI
38AQI
38AQI
45AQI
49AQI
50AQI
53AQI
52AQI
50AQI
53AQI
53AQI
51AQI
37AQI
31AQI
40AQI
27AQI
21AQI
25AQI
31AQI
33AQI
31AQI
33AQI
29AQI
28AQI
32AQI
30AQI
37AQI
40AQI
45AQI
30AQI
28AQI
41AQI
26AQI
27AQI
29AQI
26AQI
24AQI
31AQI
26AQI
29AQI
33AQI
45AQI
51AQI
54AQI
57AQI
54AQI
39AQI
40AQI
51AQI
49AQI
45AQI
50AQI
53AQI
45AQI
32AQI
54AQI
No. of days
202545AQI
Highest AQI recorded in
October54AQI
Lowest AQI recorded in
September32AQI
202441AQI
Highest AQI recorded in
April54AQI
Lowest AQI recorded in
December32AQI
202344AQI
Highest AQI recorded in
April52AQI
Lowest AQI recorded in
August32AQI
202244AQI
Highest AQI recorded in
May52AQI
Lowest AQI recorded in
December36AQI
202140AQI
Highest AQI recorded in
June48AQI
Lowest AQI recorded in
January35AQI
202040AQI
Highest AQI recorded in
August57AQI
Lowest AQI recorded in
September31AQI
Most & Least Polluted Years Over the Last 6 Years
Sonota's annual 2025 AQI (45) shows an average percentage change of 8.4% (worsened AQI) compared to previous years: 2020 (40), 2021 (40), 2022 (44), 2023 (44), 2024 (41).