Horigane, Sayama, 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
Horigane, Sayama, Saitama, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (15th August):
On this day, AQI across the 4 years varied significantly: 2026 ranks 3rd highest AQI at 24 of Good air quality, showing improvement over 2025 and 2023 on the same day.
Day & Night AQI Trend: 14th Aug - 15th Aug 2026
Horigane, Sayama, Saitama, Japan
4 AM14th Aug 2026
6 PM
3 AM15th Aug 2026
19AQI
8AQI
23AQI
8AQI
In the last 24 hours,
Horigane's AQI reached its highest point of 23 at 8 PM during the Night, while the lowest point, 8, was recorded at 10 AM during the Day between 14th Aug and 15th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Horigane, Sayama, Saitama, Japan
28°C26/31°C
28°C25/31°C
29°C25/33°C
32°C27/37°C
33°C29/38°C
33°C28/38°C
32°C28/38°C
30°C27/34°C
29°C25/35°C
28°C26/32°C
27°C24/32°C
26°C23/30°C
29°C23/35°C
31°C26/36°C
31°C27/36°C
32°C27/36°C
30°C25/36°C
24°C23/26°C
25°C22/30°C
26°C22/31°C
29°C26/33°C
30°C26/34°C
29°C26/35°C
29°C26/33°C
27°C24/31°C
24°C22/29°C
23°C22/24°C
25°C22/29°C
26°C23/29°C
26°C24/30°C
34AQI
28AQI
33AQI
28AQI
2026 Days Vs Air Quality
Horigane, Sayama, Saitama, Japan
87%
197
13%
30
Total number of days with different AQI categories in last 227 days in 2026 (138 days remaining)
Under WHO’s Safe Air Quality Limits: 87%
Health Risk Level:
Low
In 2026, 87% of 227 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
Horigane, Sayama, Saitama, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI (US)
18AQI (US)
19AQI (US)
24AQI (US)
36AQI (US)
20AQI (US)
34AQI (US)
32AQI (US)
19AQI (US)
42AQI (US)
30AQI (US)
18AQI (US)
32AQI (US)
17AQI (US)
30AQI (US)
48AQI (US)
50AQI (US)
20AQI (US)
42AQI (US)
42AQI (US)
16AQI (US)
29AQI (US)
37AQI (US)
40AQI (US)
44AQI (US)
28AQI (US)
38AQI (US)
27AQI (US)
23AQI (US)
34AQI (US)
35AQI (US)
38AQI (US)
41AQI (US)
30AQI (US)
38AQI (US)
47AQI (US)
48AQI (US)
14AQI (US)
15AQI (US)
32AQI (US)
37AQI (US)
53AQI (US)
26AQI (US)
50AQI (US)
65AQI (US)
60AQI (US)
44AQI (US)
20AQI (US)
33AQI (US)
31AQI (US)
32AQI (US)
45AQI (US)
45AQI (US)
43AQI (US)
43AQI (US)
37AQI (US)
10AQI (US)
29AQI (US)
47AQI (US)
39AQI (US)
82AQI (US)
45AQI (US)
59AQI (US)
58AQI (US)
53AQI (US)
47AQI (US)
44AQI (US)
51AQI (US)
57AQI (US)
59AQI (US)
69AQI (US)
41AQI (US)
32AQI (US)
20AQI (US)
31AQI (US)
56AQI (US)
57AQI (US)
34AQI (US)
30AQI (US)
53AQI (US)
48AQI (US)
52AQI (US)
47AQI (US)
68AQI (US)
30AQI (US)
19AQI (US)
48AQI (US)
57AQI (US)
53AQI (US)
31AQI (US)
17AQI (US)
24AQI (US)
46AQI (US)
45AQI (US)
37AQI (US)
23AQI (US)
41AQI (US)
25AQI (US)
33AQI (US)
49AQI (US)
39AQI (US)
33AQI (US)
37AQI (US)
42AQI (US)
41AQI (US)
33AQI (US)
31AQI (US)
33AQI (US)
40AQI (US)
38AQI (US)
40AQI (US)
47AQI (US)
37AQI (US)
32AQI (US)
45AQI (US)
51AQI (US)
48AQI (US)
42AQI (US)
40AQI (US)
39AQI (US)
48AQI (US)
49AQI (US)
40AQI (US)
29AQI (US)
24AQI (US)
31AQI (US)
34AQI (US)
26AQI (US)
25AQI (US)
29AQI (US)
31AQI (US)
36AQI (US)
44AQI (US)
38AQI (US)
36AQI (US)
85AQI (US)
68AQI (US)
53AQI (US)
48AQI (US)
60AQI (US)
60AQI (US)
62AQI (US)
53AQI (US)
58AQI (US)
47AQI (US)
40AQI (US)
25AQI (US)
25AQI (US)
25AQI (US)
25AQI (US)
28AQI (US)
32AQI (US)
32AQI (US)
13AQI (US)
23AQI (US)
22AQI (US)
21AQI (US)
22AQI (US)
20AQI (US)
23AQI (US)
22AQI (US)
25AQI (US)
25AQI (US)
28AQI (US)
24AQI (US)
17AQI (US)
26AQI (US)
24AQI (US)
25AQI (US)
30AQI (US)
22AQI (US)
19AQI (US)
19AQI (US)
21AQI (US)
22AQI (US)
26AQI (US)
29AQI (US)
26AQI (US)
28AQI (US)
28AQI (US)
24AQI (US)
26AQI (US)
23AQI (US)
16AQI (US)
39AQI (US)
18AQI (US)
27AQI (US)
26AQI (US)
26AQI (US)
25AQI (US)
24AQI (US)
22AQI (US)
27AQI (US)
29AQI (US)
30AQI (US)
28AQI (US)
41AQI (US)
44AQI (US)
29AQI (US)
21AQI (US)
29AQI (US)
42AQI (US)
59AQI (US)
53AQI (US)
41AQI (US)
30AQI (US)
21AQI (US)
24AQI (US)
30AQI (US)
32AQI (US)
31AQI (US)
47AQI (US)
51AQI (US)
42AQI (US)
21AQI (US)
25AQI (US)
27AQI (US)
22AQI (US)
23AQI (US)
22AQI (US)
24AQI (US)
23AQI (US)
31AQI (US)
23AQI (US)
22AQI (US)
14AQI (US)
24AQI (US)
31AQI (US)
38AQI (US)
47AQI (US)
38AQI (US)
41AQI (US)
24AQI (US)
31AQI (US)
26AQI (US)
No. of days
202635AQI (US)
Highest AQI (US) recorded in
March47AQI (US)
Lowest AQI (US) recorded in
June24AQI (US)
202542AQI (US)
Highest AQI (US) recorded in
October51AQI (US)
Lowest AQI (US) recorded in
September36AQI (US)
202345AQI (US)
Highest AQI (US) recorded in
April54AQI (US)
Lowest AQI (US) recorded in
August33AQI (US)
202240AQI (US)
Highest AQI (US) recorded in
March47AQI (US)
Lowest AQI (US) recorded in
August31AQI (US)
202141AQI (US)
Highest AQI (US) recorded in
March46AQI (US)
Lowest AQI (US) recorded in
August36AQI (US)
202037AQI (US)
Highest AQI (US) recorded in
August48AQI (US)
Lowest AQI (US) recorded in
September25AQI (US)
Most & Least Polluted Years Over the Last 6 Years
Horigane's annual 2026 AQI (US) (35) shows an average percentage change of -14.2% (improved AQI (US)) compared to previous years: 2020 (37), 2021 (41), 2022 (40), 2023 (45), 2025 (42).