Chaahoncha, Soka, Saitama, 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
Chaahoncha, Soka, Saitama, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (13th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 56 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 13th Oct - 14th Oct 2025
Chaahoncha, Soka, Saitama, Japan
5 AM13th Oct 2025
5 PM
4 AM14th Oct 2025
AQI
AQI
68AQI
32AQI
In the last 24 hours,
Chaahoncha's AQI reached its highest point of 68 at 11 AM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 13th Oct and 14th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Chaahoncha, Soka, Saitama, Japan
29°C27/33°C
29°C26/32°C
29°C27/33°C
31°C28/34°C
30°C24/36°C
22°C21/23°C
25°C23/27°C
26°C22/32°C
24°C22/27°C
23°C21/27°C
24°C21/27°C
25°C22/28°C
28°C24/32°C
25°C23/28°C
26°C24/28°C
27°C24/32°C
25°C22/28°C
21°C20/21°C
23°C20/28°C
24°C22/27°C
24°C22/26°C
25°C22/29°C
24°C21/28°C
22°C21/23°C
24°C21/29°C
21°C19/22°C
21°C18/24°C
19°C18/21°C
21°C18/24°C
--°C/°C
--°C/°C
42AQI
42AQI
41AQI
39AQI
2025 Days Vs Air Quality
Chaahoncha, Soka, Saitama, Japan
90%
258
10%
28
Total number of days with different AQI categories in last 286 days in 2025 (79 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2025, 90% of 286 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Chaahoncha, Soka, Saitama, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI
27AQI
23AQI
25AQI
23AQI
32AQI
25AQI
27AQI
26AQI
26AQI
24AQI
27AQI
30AQI
28AQI
32AQI
26AQI
30AQI
26AQI
33AQI
30AQI
34AQI
32AQI
33AQI
37AQI
33AQI
32AQI
27AQI
33AQI
27AQI
28AQI
27AQI
29AQI
29AQI
26AQI
30AQI
28AQI
27AQI
26AQI
29AQI
28AQI
26AQI
30AQI
31AQI
31AQI
28AQI
29AQI
33AQI
34AQI
31AQI
29AQI
30AQI
29AQI
31AQI
31AQI
33AQI
31AQI
34AQI
38AQI
41AQI
44AQI
50AQI
35AQI
35AQI
25AQI
31AQI
29AQI
33AQI
33AQI
32AQI
32AQI
35AQI
33AQI
28AQI
22AQI
20AQI
16AQI
18AQI
14AQI
20AQI
32AQI
40AQI
46AQI
42AQI
64AQI
71AQI
65AQI
42AQI
34AQI
38AQI
31AQI
25AQI
21AQI
19AQI
18AQI
20AQI
17AQI
19AQI
24AQI
21AQI
34AQI
31AQI
29AQI
23AQI
29AQI
24AQI
22AQI
34AQI
38AQI
46AQI
34AQI
34AQI
31AQI
21AQI
28AQI
30AQI
32AQI
36AQI
29AQI
25AQI
28AQI
24AQI
22AQI
20AQI
23AQI
21AQI
20AQI
15AQI
18AQI
17AQI
15AQI
17AQI
16AQI
19AQI
18AQI
21AQI
23AQI
18AQI
25AQI
24AQI
44AQI
36AQI
28AQI
26AQI
24AQI
19AQI
18AQI
16AQI
15AQI
17AQI
16AQI
14AQI
16AQI
17AQI
20AQI
20AQI
24AQI
25AQI
25AQI
29AQI
24AQI
23AQI
23AQI
25AQI
25AQI
21AQI
23AQI
22AQI
34AQI
29AQI
27AQI
25AQI
23AQI
21AQI
18AQI
19AQI
16AQI
15AQI
18AQI
18AQI
21AQI
39AQI
42AQI
47AQI
44AQI
48AQI
53AQI
68AQI
83AQI
81AQI
84AQI
61AQI
47AQI
50AQI
49AQI
40AQI
39AQI
39AQI
43AQI
38AQI
34AQI
33AQI
37AQI
38AQI
41AQI
43AQI
40AQI
41AQI
35AQI
43AQI
36AQI
31AQI
32AQI
33AQI
41AQI
44AQI
60AQI
51AQI
51AQI
50AQI
47AQI
50AQI
38AQI
39AQI
35AQI
33AQI
38AQI
35AQI
39AQI
38AQI
44AQI
44AQI
48AQI
50AQI
51AQI
49AQI
56AQI
55AQI
53AQI
51AQI
45AQI
51AQI
55AQI
53AQI
44AQI
38AQI
37AQI
41AQI
30AQI
30AQI
30AQI
41AQI
43AQI
39AQI
33AQI
31AQI
30AQI
37AQI
39AQI
41AQI
50AQI
47AQI
36AQI
37AQI
29AQI
29AQI
28AQI
29AQI
33AQI
51AQI
31AQI
33AQI
38AQI
27AQI
40AQI
49AQI
45AQI
52AQI
51AQI
48AQI
51AQI
54AQI
52AQI
53AQI
44AQI
34AQI
56AQI
29AQI
30AQI
35AQI
27AQI
21AQI
23AQI
46AQI
46AQI
36AQI
48AQI
No. of days
202533AQI
Highest AQI recorded in
October48AQI
Lowest AQI recorded in
May21AQI
202433AQI
Highest AQI recorded in
July52AQI
Lowest AQI recorded in
December27AQI
202332AQI
Highest AQI recorded in
April43AQI
Lowest AQI recorded in
August21AQI
202233AQI
Highest AQI recorded in
June45AQI
Lowest AQI recorded in
August25AQI
202129AQI
Highest AQI recorded in
June40AQI
Lowest AQI recorded in
February14AQI
202017AQI
Highest AQI recorded in
March23AQI
Lowest AQI recorded in
April12AQI
Most & Least Polluted Years Over the Last 6 Years
Chaahoncha's annual 2025 AQI (33) shows an average percentage change of 23.5% (worsened AQI) compared to previous years: 2020 (17), 2021 (29), 2022 (33), 2023 (32), 2024 (33).