Nishiarai, Kawaguchi, 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
Nishiarai, Kawaguchi, Saitama, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (15th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 32 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 14th Aug - 15th Aug 2026
Nishiarai, Kawaguchi, Saitama, Japan
4 AM14th Aug 2026
6 PM
3 AM15th Aug 2026
29AQI
12AQI
44AQI
19AQI
In the last 24 hours,
Nishiarai's AQI reached its highest point of 44 at 7 PM during the Night, while the lowest point, 12, was recorded at 6 AM during the Day between 14th Aug and 15th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Nishiarai, Kawaguchi, Saitama, Japan
29°C27/32°C
28°C26/31°C
28°C25/32°C
31°C27/36°C
32°C28/36°C
32°C28/36°C
32°C29/38°C
30°C27/34°C
29°C25/35°C
28°C25/32°C
27°C24/30°C
27°C24/31°C
30°C25/36°C
32°C28/36°C
31°C29/36°C
32°C27/37°C
30°C25/35°C
25°C24/27°C
26°C22/30°C
27°C23/31°C
29°C26/34°C
30°C27/34°C
30°C26/34°C
29°C26/34°C
27°C24/31°C
24°C21/28°C
23°C22/26°C
27°C23/31°C
26°C24/29°C
27°C24/32°C
46AQI
28AQI
41AQI
31AQI
2026 Days Vs Air Quality
Nishiarai, Kawaguchi, Saitama, Japan
85%
192
15%
35
Total number of days with different AQI categories in last 227 days in 2026 (138 days remaining)
Under WHO’s Safe Air Quality Limits: 85%
Health Risk Level:
Low
In 2026, 85% 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
Nishiarai, Kawaguchi, Saitama, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
18AQI (US)
21AQI (US)
14AQI (US)
22AQI (US)
53AQI (US)
17AQI (US)
35AQI (US)
41AQI (US)
14AQI (US)
36AQI (US)
31AQI (US)
17AQI (US)
40AQI (US)
18AQI (US)
38AQI (US)
56AQI (US)
54AQI (US)
28AQI (US)
48AQI (US)
49AQI (US)
12AQI (US)
24AQI (US)
40AQI (US)
43AQI (US)
43AQI (US)
22AQI (US)
41AQI (US)
18AQI (US)
22AQI (US)
38AQI (US)
38AQI (US)
42AQI (US)
47AQI (US)
28AQI (US)
41AQI (US)
66AQI (US)
59AQI (US)
13AQI (US)
16AQI (US)
34AQI (US)
42AQI (US)
57AQI (US)
29AQI (US)
49AQI (US)
64AQI (US)
72AQI (US)
49AQI (US)
20AQI (US)
41AQI (US)
13AQI (US)
26AQI (US)
48AQI (US)
43AQI (US)
44AQI (US)
44AQI (US)
36AQI (US)
17AQI (US)
42AQI (US)
41AQI (US)
36AQI (US)
61AQI (US)
45AQI (US)
48AQI (US)
42AQI (US)
25AQI (US)
41AQI (US)
34AQI (US)
43AQI (US)
57AQI (US)
57AQI (US)
63AQI (US)
37AQI (US)
45AQI (US)
56AQI (US)
48AQI (US)
47AQI (US)
50AQI (US)
36AQI (US)
29AQI (US)
57AQI (US)
59AQI (US)
51AQI (US)
51AQI (US)
60AQI (US)
33AQI (US)
26AQI (US)
42AQI (US)
50AQI (US)
55AQI (US)
22AQI (US)
25AQI (US)
33AQI (US)
45AQI (US)
46AQI (US)
38AQI (US)
29AQI (US)
27AQI (US)
28AQI (US)
33AQI (US)
42AQI (US)
51AQI (US)
33AQI (US)
42AQI (US)
40AQI (US)
39AQI (US)
33AQI (US)
34AQI (US)
30AQI (US)
32AQI (US)
32AQI (US)
36AQI (US)
47AQI (US)
38AQI (US)
32AQI (US)
45AQI (US)
51AQI (US)
49AQI (US)
43AQI (US)
39AQI (US)
36AQI (US)
47AQI (US)
49AQI (US)
53AQI (US)
30AQI (US)
22AQI (US)
29AQI (US)
30AQI (US)
25AQI (US)
25AQI (US)
30AQI (US)
28AQI (US)
33AQI (US)
40AQI (US)
33AQI (US)
35AQI (US)
85AQI (US)
68AQI (US)
54AQI (US)
49AQI (US)
60AQI (US)
58AQI (US)
61AQI (US)
52AQI (US)
58AQI (US)
48AQI (US)
39AQI (US)
24AQI (US)
25AQI (US)
24AQI (US)
23AQI (US)
27AQI (US)
30AQI (US)
20AQI (US)
13AQI (US)
22AQI (US)
21AQI (US)
20AQI (US)
22AQI (US)
20AQI (US)
23AQI (US)
21AQI (US)
24AQI (US)
23AQI (US)
38AQI (US)
46AQI (US)
13AQI (US)
23AQI (US)
24AQI (US)
24AQI (US)
25AQI (US)
23AQI (US)
20AQI (US)
18AQI (US)
20AQI (US)
22AQI (US)
26AQI (US)
30AQI (US)
25AQI (US)
27AQI (US)
24AQI (US)
23AQI (US)
26AQI (US)
16AQI (US)
16AQI (US)
38AQI (US)
20AQI (US)
25AQI (US)
26AQI (US)
23AQI (US)
22AQI (US)
24AQI (US)
25AQI (US)
27AQI (US)
33AQI (US)
30AQI (US)
36AQI (US)
64AQI (US)
49AQI (US)
23AQI (US)
17AQI (US)
37AQI (US)
51AQI (US)
70AQI (US)
63AQI (US)
42AQI (US)
28AQI (US)
22AQI (US)
24AQI (US)
33AQI (US)
34AQI (US)
36AQI (US)
48AQI (US)
57AQI (US)
49AQI (US)
17AQI (US)
34AQI (US)
28AQI (US)
25AQI (US)
32AQI (US)
46AQI (US)
35AQI (US)
31AQI (US)
35AQI (US)
27AQI (US)
25AQI (US)
22AQI (US)
32AQI (US)
32AQI (US)
40AQI (US)
45AQI (US)
38AQI (US)
41AQI (US)
24AQI (US)
33AQI (US)
33AQI (US)
No. of days
202636AQI (US)
Highest AQI (US) recorded in
March45AQI (US)
Lowest AQI (US) recorded in
June24AQI (US)
202537AQI (US)
Highest AQI (US) recorded in
December51AQI (US)
Lowest AQI (US) recorded in
May22AQI (US)
202433AQI (US)
Highest AQI (US) recorded in
July47AQI (US)
Lowest AQI (US) recorded in
August26AQI (US)
202330AQI (US)
Highest AQI (US) recorded in
April40AQI (US)
Lowest AQI (US) recorded in
August18AQI (US)
202230AQI (US)
Highest AQI (US) recorded in
May42AQI (US)
Lowest AQI (US) recorded in
August17AQI (US)
202123AQI (US)
Highest AQI (US) recorded in
June33AQI (US)
Lowest AQI (US) recorded in
April14AQI (US)
202017AQI (US)
Highest AQI (US) recorded in
August23AQI (US)
Lowest AQI (US) recorded in
April11AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Nishiarai's annual 2026 AQI (US) (36) shows an average percentage change of 35.7% (worsened AQI (US)) compared to previous years: 2020 (17), 2021 (23), 2022 (30), 2023 (30), 2024 (33), 2025 (37).