Hasuda, 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
Hasuda, Saitama, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (4th October):
On this day, AQI across the 4 years varied significantly: 2026 ranks 4th highest AQI at 25 of Good air quality, showing improvement over 2025, 2023 and 2022 on the same day.
Day & Night AQI Trend: 3rd Oct - 4th Oct 2026
Hasuda, Saitama, Japan
5 AM3rd Oct 2026
5 PM
4 AM4th Oct 2026
25AQI
21AQI
29AQI
21AQI
In the last 24 hours,
Hasuda's AQI reached its highest point of 29 at 12 AM during the Night, while the lowest point, 21, was recorded at 7 PM during the Night between 3rd Oct and 4th Oct 2026.
Day & Night AQI Trend : Sep - Oct 2026
Hasuda, Saitama, Japan
23°C21/26°C
23°C21/25°C
22°C21/24°C
25°C23/28°C
26°C21/33°C
21°C19/21°C
20°C19/21°C
23°C20/26°C
25°C22/28°C
28°C23/34°C
24°C22/26°C
21°C20/22°C
21°C20/24°C
22°C19/25°C
24°C21/27°C
22°C21/24°C
22°C21/25°C
27°C25/29°C
22°C20/24°C
25°C20/30°C
24°C22/27°C
19°C17/22°C
21°C18/24°C
22°C21/24°C
19°C18/22°C
19°C18/20°C
24°C19/29°C
19°C18/24°C
20°C18/24°C
21°C19/22°C
23AQI
21AQI
26AQI
23AQI
2026 Days Vs Air Quality
Hasuda, Saitama, Japan
90%
248
10%
29
Total number of days with different AQI categories in last 277 days in 2026 (88 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2026, 90% of 277 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
Hasuda, Saitama, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
21AQI (US)
18AQI (US)
22AQI (US)
25AQI (US)
44AQI (US)
29AQI (US)
35AQI (US)
39AQI (US)
18AQI (US)
37AQI (US)
30AQI (US)
17AQI (US)
36AQI (US)
15AQI (US)
30AQI (US)
53AQI (US)
44AQI (US)
26AQI (US)
48AQI (US)
48AQI (US)
13AQI (US)
19AQI (US)
23AQI (US)
31AQI (US)
47AQI (US)
15AQI (US)
19AQI (US)
20AQI (US)
20AQI (US)
39AQI (US)
20AQI (US)
22AQI (US)
25AQI (US)
28AQI (US)
42AQI (US)
63AQI (US)
53AQI (US)
15AQI (US)
14AQI (US)
34AQI (US)
42AQI (US)
53AQI (US)
26AQI (US)
45AQI (US)
58AQI (US)
74AQI (US)
49AQI (US)
22AQI (US)
40AQI (US)
34AQI (US)
26AQI (US)
37AQI (US)
44AQI (US)
43AQI (US)
45AQI (US)
37AQI (US)
12AQI (US)
31AQI (US)
40AQI (US)
37AQI (US)
62AQI (US)
43AQI (US)
50AQI (US)
56AQI (US)
51AQI (US)
45AQI (US)
36AQI (US)
47AQI (US)
57AQI (US)
58AQI (US)
64AQI (US)
37AQI (US)
29AQI (US)
13AQI (US)
30AQI (US)
50AQI (US)
53AQI (US)
44AQI (US)
35AQI (US)
57AQI (US)
54AQI (US)
50AQI (US)
46AQI (US)
66AQI (US)
31AQI (US)
25AQI (US)
49AQI (US)
55AQI (US)
55AQI (US)
24AQI (US)
20AQI (US)
25AQI (US)
47AQI (US)
47AQI (US)
38AQI (US)
25AQI (US)
41AQI (US)
26AQI (US)
32AQI (US)
48AQI (US)
39AQI (US)
31AQI (US)
35AQI (US)
40AQI (US)
39AQI (US)
34AQI (US)
36AQI (US)
32AQI (US)
33AQI (US)
34AQI (US)
41AQI (US)
33AQI (US)
13AQI (US)
32AQI (US)
46AQI (US)
52AQI (US)
49AQI (US)
42AQI (US)
40AQI (US)
38AQI (US)
48AQI (US)
50AQI (US)
45AQI (US)
29AQI (US)
22AQI (US)
30AQI (US)
30AQI (US)
26AQI (US)
30AQI (US)
24AQI (US)
24AQI (US)
36AQI (US)
37AQI (US)
33AQI (US)
35AQI (US)
85AQI (US)
68AQI (US)
53AQI (US)
48AQI (US)
61AQI (US)
59AQI (US)
60AQI (US)
54AQI (US)
58AQI (US)
48AQI (US)
40AQI (US)
25AQI (US)
26AQI (US)
25AQI (US)
28AQI (US)
32AQI (US)
29AQI (US)
29AQI (US)
26AQI (US)
23AQI (US)
21AQI (US)
20AQI (US)
21AQI (US)
21AQI (US)
22AQI (US)
23AQI (US)
24AQI (US)
24AQI (US)
28AQI (US)
50AQI (US)
17AQI (US)
19AQI (US)
23AQI (US)
25AQI (US)
27AQI (US)
23AQI (US)
20AQI (US)
19AQI (US)
22AQI (US)
22AQI (US)
27AQI (US)
30AQI (US)
27AQI (US)
28AQI (US)
27AQI (US)
24AQI (US)
26AQI (US)
17AQI (US)
16AQI (US)
41AQI (US)
25AQI (US)
32AQI (US)
26AQI (US)
25AQI (US)
23AQI (US)
26AQI (US)
27AQI (US)
28AQI (US)
30AQI (US)
29AQI (US)
29AQI (US)
42AQI (US)
44AQI (US)
27AQI (US)
20AQI (US)
30AQI (US)
43AQI (US)
60AQI (US)
51AQI (US)
36AQI (US)
28AQI (US)
27AQI (US)
24AQI (US)
31AQI (US)
34AQI (US)
32AQI (US)
43AQI (US)
43AQI (US)
41AQI (US)
25AQI (US)
25AQI (US)
28AQI (US)
22AQI (US)
24AQI (US)
23AQI (US)
25AQI (US)
22AQI (US)
30AQI (US)
24AQI (US)
24AQI (US)
16AQI (US)
23AQI (US)
26AQI (US)
23AQI (US)
24AQI (US)
23AQI (US)
24AQI (US)
26AQI (US)
30AQI (US)
36AQI (US)
35AQI (US)
40AQI (US)
37AQI (US)
25AQI (US)
28AQI (US)
44AQI (US)
38AQI (US)
33AQI (US)
28AQI (US)
45AQI (US)
36AQI (US)
24AQI (US)
25AQI (US)
24AQI (US)
16AQI (US)
23AQI (US)
26AQI (US)
26AQI (US)
23AQI (US)
24AQI (US)
26AQI (US)
25AQI (US)
24AQI (US)
19AQI (US)
21AQI (US)
24AQI (US)
22AQI (US)
24AQI (US)
9AQI (US)
23AQI (US)
27AQI (US)
24AQI (US)
32AQI (US)
24AQI (US)
22AQI (US)
25AQI (US)
25AQI (US)
22AQI (US)
22AQI (US)
24AQI (US)
23AQI (US)
25AQI (US)
29AQI (US)
38AQI (US)
45AQI (US)
36AQI (US)
41AQI (US)
25AQI (US)
31AQI (US)
29AQI (US)
25AQI (US)
24AQI (US)
No. of days
202633AQI (US)
Highest AQI (US) recorded in
March45AQI (US)
Lowest AQI (US) recorded in
October24AQI (US)
202543AQI (US)
Highest AQI (US) recorded in
October51AQI (US)
Lowest AQI (US) recorded in
September36AQI (US)
202347AQI (US)
Highest AQI (US) recorded in
March53AQI (US)
Lowest AQI (US) recorded in
August34AQI (US)
202244AQI (US)
Highest AQI (US) recorded in
November50AQI (US)
Lowest AQI (US) recorded in
August27AQI (US)
202142AQI (US)
Highest AQI (US) recorded in
January46AQI (US)
Lowest AQI (US) recorded in
August36AQI (US)
202040AQI (US)
Highest AQI (US) recorded in
November51AQI (US)
Lowest AQI (US) recorded in
September30AQI (US)
Most & Least Polluted Years Over the Last 6 Years
Hasuda's annual 2026 AQI (US) (33) shows an average percentage change of -23.3% (improved AQI (US)) compared to previous years: 2020 (40), 2021 (42), 2022 (44), 2023 (47), 2025 (43).