Shakujiimachi, Niiza, Saitama, 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
Shakujiimachi, Niiza, Saitama, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (13th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 33 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 14th Aug - 15th Aug 2025
Shakujiimachi, Niiza, Saitama, Japan
4 AM14th Aug 2025
6 PM
3 AM15th Aug 2025
AQI
AQI
48AQI
29AQI
In the last 24 hours,
Shakujiimachi's AQI reached its highest point of 48 at 3 PM during the Night, while the lowest point, undefined, was recorded at 3 AM during the Night between 14th Aug and 15th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Shakujiimachi, Niiza, Saitama, Japan
29°C26/31°C
29°C26/32°C
29°C26/33°C
29°C26/33°C
30°C27/35°C
31°C28/36°C
32°C29/36°C
32°C29/36°C
32°C29/37°C
32°C29/37°C
32°C29/37°C
32°C29/36°C
32°C29/37°C
32°C28/38°C
31°C28/36°C
29°C26/35°C
29°C27/32°C
31°C27/37°C
32°C28/37°C
33°C30/38°C
35°C30/39°C
33°C30/38°C
32°C29/34°C
30°C25/36°C
29°C25/34°C
27°C26/27°C
28°C27/30°C
28°C27/30°C
28°C26/32°C
--°C/°C
--°C/°C
43AQI
38AQI
42AQI
37AQI
2025 Days Vs Air Quality
Shakujiimachi, Niiza, Saitama, Japan
93%
209
7%
16
Total number of days with different AQI categories in last 226 days in 2025 (139 days remaining)
Under WHO’s Safe Air Quality Limits: 93%
Health Risk Level:
Very Low
In 2025, 93% of 226 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
Shakujiimachi, Niiza, Saitama, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
28AQI
24AQI
26AQI
31AQI
44AQI
29AQI
31AQI
26AQI
27AQI
25AQI
36AQI
30AQI
31AQI
32AQI
28AQI
29AQI
29AQI
40AQI
42AQI
37AQI
37AQI
42AQI
40AQI
35AQI
34AQI
28AQI
37AQI
27AQI
29AQI
28AQI
36AQI
36AQI
35AQI
32AQI
30AQI
28AQI
27AQI
30AQI
28AQI
27AQI
29AQI
34AQI
36AQI
28AQI
29AQI
35AQI
34AQI
31AQI
30AQI
29AQI
30AQI
30AQI
32AQI
32AQI
33AQI
35AQI
37AQI
50AQI
52AQI
54AQI
38AQI
36AQI
29AQI
32AQI
32AQI
35AQI
35AQI
34AQI
36AQI
49AQI
41AQI
35AQI
31AQI
22AQI
19AQI
21AQI
15AQI
20AQI
34AQI
41AQI
46AQI
47AQI
64AQI
69AQI
65AQI
42AQI
32AQI
37AQI
28AQI
27AQI
20AQI
20AQI
24AQI
22AQI
19AQI
22AQI
26AQI
23AQI
34AQI
34AQI
32AQI
25AQI
30AQI
25AQI
24AQI
39AQI
45AQI
53AQI
37AQI
38AQI
34AQI
21AQI
30AQI
35AQI
33AQI
38AQI
32AQI
24AQI
32AQI
28AQI
22AQI
21AQI
31AQI
26AQI
23AQI
21AQI
23AQI
24AQI
17AQI
19AQI
20AQI
27AQI
27AQI
29AQI
33AQI
21AQI
34AQI
32AQI
55AQI
46AQI
35AQI
38AQI
35AQI
23AQI
24AQI
21AQI
22AQI
25AQI
20AQI
15AQI
19AQI
24AQI
24AQI
20AQI
32AQI
36AQI
40AQI
48AQI
37AQI
29AQI
29AQI
33AQI
35AQI
27AQI
22AQI
31AQI
41AQI
32AQI
33AQI
33AQI
27AQI
20AQI
20AQI
17AQI
16AQI
17AQI
29AQI
27AQI
29AQI
35AQI
42AQI
47AQI
48AQI
48AQI
49AQI
63AQI
79AQI
79AQI
84AQI
59AQI
47AQI
52AQI
52AQI
40AQI
39AQI
38AQI
40AQI
35AQI
31AQI
32AQI
37AQI
40AQI
44AQI
45AQI
42AQI
41AQI
37AQI
42AQI
38AQI
33AQI
33AQI
34AQI
43AQI
46AQI
61AQI
52AQI
50AQI
46AQI
45AQI
49AQI
35AQI
37AQI
35AQI
33AQI
32AQI
32AQI
38AQI
30AQI
27AQI
29AQI
46AQI
44AQI
No. of days
202534AQI
Highest AQI recorded in
July46AQI
Lowest AQI recorded in
May27AQI
202432AQI
Highest AQI recorded in
July41AQI
Lowest AQI recorded in
January27AQI
202331AQI
Highest AQI recorded in
April42AQI
Lowest AQI recorded in
August19AQI
202231AQI
Highest AQI recorded in
June44AQI
Lowest AQI recorded in
August18AQI
202125AQI
Highest AQI recorded in
June35AQI
Lowest AQI recorded in
February12AQI
202016AQI
Highest AQI recorded in
August29AQI
Lowest AQI recorded in
April11AQI
Most & Least Polluted Years Over the Last 6 Years
Shakujiimachi's annual 2025 AQI (34) shows an average percentage change of 36.4% (worsened AQI) compared to previous years: 2020 (16), 2021 (25), 2022 (31), 2023 (31), 2024 (32).