Nasukarasuyama, Tochigi, 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
Nasukarasuyama, Tochigi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (2nd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 4th highest AQI at 38 of Good air quality, showing improvement over 2023, 2022 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 2nd Aug - 3rd Aug 2025
Nasukarasuyama, Tochigi, Japan
4 AM2nd Aug 2025
6 PM
3 AM3rd Aug 2025
49AQI
24AQI
51AQI
31AQI
In the last 24 hours,
Nasukarasuyama's AQI reached its highest point of 51 at 7 PM during the Night, while the lowest point, 24, was recorded at 12 PM during the Day between 2nd Aug and 3rd Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Nasukarasuyama, Tochigi, Japan
25°C20/31°C
24°C21/30°C
27°C22/33°C
26°C22/32°C
27°C22/34°C
27°C22/34°C
24°C20/29°C
19°C18/21°C
20°C17/24°C
23°C17/28°C
23°C20/27°C
24°C23/26°C
24°C22/28°C
25°C22/30°C
25°C21/31°C
25°C21/32°C
27°C22/33°C
28°C22/35°C
28°C22/35°C
28°C23/35°C
28°C22/35°C
27°C22/35°C
28°C22/35°C
29°C23/35°C
29°C24/36°C
28°C23/37°C
27°C22/35°C
26°C21/34°C
25°C20/30°C
29°C24/36°C
--°C/°C
49AQI
48AQI
47AQI
46AQI
2025 Days Vs Air Quality
Nasukarasuyama, Tochigi, Japan
90%
192
10%
22
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Under WHO’s Safe Air Quality Limits: 90%
Health Risk Level:
Very Low
In 2025, 90% of 215 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
Nasukarasuyama, Tochigi, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI
28AQI
25AQI
26AQI
26AQI
44AQI
25AQI
30AQI
25AQI
26AQI
23AQI
26AQI
30AQI
28AQI
30AQI
26AQI
26AQI
25AQI
48AQI
37AQI
39AQI
34AQI
36AQI
35AQI
31AQI
29AQI
27AQI
33AQI
28AQI
27AQI
29AQI
28AQI
30AQI
29AQI
30AQI
30AQI
29AQI
28AQI
30AQI
28AQI
30AQI
30AQI
33AQI
33AQI
30AQI
30AQI
35AQI
36AQI
31AQI
31AQI
31AQI
31AQI
32AQI
32AQI
33AQI
34AQI
37AQI
36AQI
46AQI
46AQI
52AQI
35AQI
36AQI
28AQI
32AQI
33AQI
35AQI
34AQI
37AQI
40AQI
40AQI
43AQI
33AQI
34AQI
22AQI
20AQI
23AQI
18AQI
23AQI
35AQI
46AQI
49AQI
48AQI
66AQI
62AQI
67AQI
49AQI
37AQI
34AQI
30AQI
25AQI
21AQI
19AQI
19AQI
25AQI
24AQI
28AQI
37AQI
25AQI
43AQI
39AQI
36AQI
25AQI
25AQI
26AQI
21AQI
40AQI
50AQI
62AQI
58AQI
42AQI
50AQI
29AQI
34AQI
32AQI
46AQI
45AQI
51AQI
32AQI
40AQI
39AQI
27AQI
33AQI
31AQI
33AQI
28AQI
24AQI
28AQI
32AQI
20AQI
21AQI
20AQI
34AQI
37AQI
43AQI
48AQI
31AQI
40AQI
40AQI
55AQI
62AQI
51AQI
47AQI
40AQI
29AQI
28AQI
27AQI
26AQI
31AQI
26AQI
19AQI
22AQI
34AQI
35AQI
30AQI
36AQI
47AQI
53AQI
62AQI
54AQI
47AQI
38AQI
42AQI
40AQI
37AQI
29AQI
33AQI
38AQI
38AQI
40AQI
39AQI
39AQI
39AQI
38AQI
39AQI
33AQI
31AQI
37AQI
36AQI
41AQI
47AQI
49AQI
49AQI
54AQI
52AQI
55AQI
58AQI
68AQI
72AQI
74AQI
56AQI
45AQI
47AQI
50AQI
38AQI
37AQI
41AQI
38AQI
37AQI
36AQI
40AQI
43AQI
44AQI
44AQI
50AQI
51AQI
50AQI
48AQI
46AQI
44AQI
39AQI
40AQI
37AQI
38AQI
30AQI
32AQI
38AQI
35AQI
34AQI
39AQI
48AQI
38AQI
No. of days
202537AQI
Highest AQI recorded in
July48AQI
Lowest AQI recorded in
January30AQI
202433AQI
Highest AQI recorded in
July46AQI
Lowest AQI recorded in
January24AQI
202333AQI
Highest AQI recorded in
April42AQI
Lowest AQI recorded in
December26AQI
202237AQI
Highest AQI recorded in
August50AQI
Lowest AQI recorded in
February30AQI
202134AQI
Highest AQI recorded in
June43AQI
Lowest AQI recorded in
November31AQI
202035AQI
Highest AQI recorded in
August55AQI
Lowest AQI recorded in
April25AQI
Most & Least Polluted Years Over the Last 6 Years
Nasukarasuyama's annual 2025 AQI (37) shows an average percentage change of 6.9% (worsened AQI) compared to previous years: 2020 (35), 2021 (34), 2022 (37), 2023 (33), 2024 (33).