Nishiwaki, Hyogo, 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
Nishiwaki, Hyogo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (5th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 51 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 6th Aug - 7th Aug 2025
Nishiwaki, Hyogo, Japan
5 AM6th Aug 2025
7 PM
4 AM7th Aug 2025
AQI
AQI
57AQI
39AQI
In the last 24 hours,
Nishiwaki's AQI reached its highest point of 57 at 7 PM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 6th Aug and 7th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Nishiwaki, Hyogo, Japan
27°C23/36°C
28°C23/34°C
27°C23/36°C
26°C22/33°C
27°C21/34°C
27°C23/33°C
25°C23/31°C
26°C23/31°C
27°C24/31°C
23°C21/25°C
26°C23/30°C
26°C22/31°C
27°C22/32°C
27°C23/33°C
28°C23/34°C
28°C23/34°C
28°C23/35°C
28°C24/34°C
28°C23/34°C
28°C23/34°C
28°C23/36°C
29°C23/38°C
30°C23/37°C
29°C24/38°C
28°C23/36°C
27°C22/35°C
29°C23/36°C
28°C26/33°C
28°C25/33°C
--°C/°C
--°C/°C
49AQI
39AQI
48AQI
48AQI
2025 Days Vs Air Quality
Nishiwaki, Hyogo, Japan
75%
163
25%
54
Total number of days with different AQI categories in last 218 days in 2025 (147 days remaining)
Under WHO’s Safe Air Quality Limits: 75%
Health Risk Level:
Low
In 2025, 75% of 218 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
Nishiwaki, Hyogo, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI
34AQI
29AQI
29AQI
30AQI
36AQI
29AQI
28AQI
28AQI
24AQI
22AQI
31AQI
30AQI
45AQI
36AQI
35AQI
31AQI
31AQI
39AQI
42AQI
37AQI
52AQI
66AQI
54AQI
44AQI
38AQI
31AQI
32AQI
31AQI
36AQI
62AQI
61AQI
44AQI
41AQI
38AQI
38AQI
31AQI
32AQI
29AQI
27AQI
29AQI
27AQI
33AQI
29AQI
31AQI
27AQI
37AQI
32AQI
32AQI
28AQI
27AQI
28AQI
29AQI
30AQI
31AQI
31AQI
39AQI
53AQI
56AQI
63AQI
66AQI
45AQI
40AQI
32AQI
36AQI
33AQI
32AQI
36AQI
36AQI
31AQI
34AQI
42AQI
34AQI
29AQI
21AQI
26AQI
22AQI
23AQI
39AQI
51AQI
56AQI
64AQI
67AQI
68AQI
84AQI
61AQI
41AQI
39AQI
32AQI
33AQI
30AQI
24AQI
20AQI
23AQI
34AQI
41AQI
44AQI
44AQI
49AQI
55AQI
54AQI
50AQI
33AQI
46AQI
24AQI
41AQI
45AQI
55AQI
56AQI
45AQI
39AQI
43AQI
24AQI
26AQI
63AQI
53AQI
59AQI
44AQI
53AQI
59AQI
55AQI
37AQI
46AQI
33AQI
40AQI
23AQI
27AQI
25AQI
34AQI
29AQI
32AQI
48AQI
52AQI
58AQI
55AQI
48AQI
37AQI
49AQI
50AQI
66AQI
41AQI
34AQI
48AQI
36AQI
26AQI
27AQI
31AQI
31AQI
41AQI
33AQI
35AQI
41AQI
50AQI
28AQI
41AQI
43AQI
45AQI
52AQI
66AQI
52AQI
29AQI
37AQI
47AQI
51AQI
37AQI
33AQI
38AQI
36AQI
47AQI
51AQI
55AQI
49AQI
46AQI
41AQI
41AQI
39AQI
40AQI
50AQI
50AQI
50AQI
55AQI
60AQI
79AQI
83AQI
94AQI
92AQI
81AQI
71AQI
71AQI
79AQI
72AQI
66AQI
63AQI
57AQI
48AQI
53AQI
56AQI
45AQI
45AQI
41AQI
34AQI
31AQI
36AQI
41AQI
37AQI
28AQI
26AQI
24AQI
27AQI
39AQI
42AQI
42AQI
46AQI
45AQI
48AQI
61AQI
51AQI
36AQI
35AQI
42AQI
43AQI
40AQI
45AQI
54AQI
50AQI
No. of days
202542AQI
Highest AQI recorded in
July54AQI
Lowest AQI recorded in
February35AQI
202433AQI
Highest AQI recorded in
April44AQI
Lowest AQI recorded in
August28AQI
202335AQI
Highest AQI recorded in
April44AQI
Lowest AQI recorded in
August23AQI
202236AQI
Highest AQI recorded in
May43AQI
Lowest AQI recorded in
January31AQI
202134AQI
Highest AQI recorded in
June40AQI
Lowest AQI recorded in
January30AQI
202035AQI
Highest AQI recorded in
August55AQI
Lowest AQI recorded in
December28AQI
Most & Least Polluted Years Over the Last 6 Years
Nishiwaki's annual 2025 AQI (42) shows an average percentage change of 22.2% (worsened AQI) compared to previous years: 2020 (35), 2021 (34), 2022 (36), 2023 (35), 2024 (33).