Nasushiobara, Tochigi, 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
Nasushiobara, Tochigi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (18th October ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 53 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 19th Oct - 20th Oct 2025
Nasushiobara, Tochigi, Japan
5 AM19th Oct 2025
5 PM
4 AM20th Oct 2025
AQI
AQI
60AQI
23AQI
In the last 24 hours,
Nasushiobara's AQI reached its highest point of 60 at 7 AM during the Night, while the lowest point, 23, was recorded at 4 AM during the Night between 19th Oct and 20th Oct 2025.
Day & Night AQI Trend : Sep - Oct 2025
Nasushiobara, Tochigi, Japan
17°C15/19°C
18°C13/22°C
16°C11/22°C
15°C11/20°C
16°C12/21°C
18°C13/24°C
21°C17/26°C
19°C15/25°C
18°C15/23°C
20°C14/25°C
17°C14/23°C
16°C13/16°C
16°C11/23°C
16°C11/22°C
16°C13/21°C
19°C16/24°C
19°C14/24°C
14°C12/16°C
18°C14/24°C
14°C10/17°C
14°C9/19°C
13°C11/13°C
17°C11/23°C
17°C12/20°C
12°C10/13°C
15°C10/20°C
14°C13/15°C
16°C12/21°C
16°C12/20°C
--°C/°C
--°C/°C
40AQI
39AQI
41AQI
41AQI
2025 Days Vs Air Quality
Nasushiobara, Tochigi, Japan
89%
260
11%
31
Total number of days with different AQI categories in last 292 days in 2025 (73 days remaining)
Under WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2025, 89% of 292 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
Nasushiobara, Tochigi, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI
28AQI
28AQI
28AQI
28AQI
40AQI
29AQI
32AQI
28AQI
28AQI
27AQI
31AQI
30AQI
31AQI
29AQI
28AQI
28AQI
29AQI
37AQI
39AQI
41AQI
39AQI
39AQI
36AQI
34AQI
32AQI
29AQI
30AQI
30AQI
31AQI
31AQI
30AQI
31AQI
30AQI
32AQI
32AQI
31AQI
29AQI
31AQI
30AQI
31AQI
32AQI
31AQI
33AQI
31AQI
31AQI
35AQI
36AQI
32AQI
32AQI
32AQI
32AQI
32AQI
33AQI
34AQI
35AQI
37AQI
41AQI
43AQI
47AQI
49AQI
40AQI
38AQI
31AQI
34AQI
34AQI
36AQI
36AQI
39AQI
42AQI
39AQI
47AQI
32AQI
34AQI
21AQI
21AQI
23AQI
20AQI
25AQI
38AQI
45AQI
54AQI
51AQI
66AQI
65AQI
67AQI
48AQI
35AQI
33AQI
30AQI
25AQI
22AQI
20AQI
20AQI
28AQI
23AQI
28AQI
36AQI
26AQI
40AQI
34AQI
39AQI
24AQI
25AQI
23AQI
23AQI
39AQI
48AQI
59AQI
61AQI
44AQI
49AQI
30AQI
29AQI
35AQI
45AQI
43AQI
45AQI
31AQI
32AQI
39AQI
25AQI
31AQI
28AQI
33AQI
29AQI
26AQI
30AQI
34AQI
22AQI
23AQI
25AQI
32AQI
38AQI
44AQI
49AQI
32AQI
37AQI
38AQI
52AQI
61AQI
50AQI
46AQI
40AQI
27AQI
30AQI
29AQI
28AQI
33AQI
26AQI
20AQI
19AQI
33AQI
30AQI
30AQI
33AQI
44AQI
49AQI
58AQI
55AQI
42AQI
35AQI
36AQI
41AQI
37AQI
26AQI
32AQI
35AQI
40AQI
44AQI
46AQI
46AQI
50AQI
43AQI
41AQI
36AQI
34AQI
41AQI
39AQI
42AQI
47AQI
50AQI
54AQI
54AQI
52AQI
56AQI
54AQI
60AQI
67AQI
66AQI
56AQI
45AQI
45AQI
49AQI
39AQI
37AQI
41AQI
36AQI
38AQI
37AQI
40AQI
39AQI
43AQI
43AQI
47AQI
49AQI
49AQI
48AQI
43AQI
47AQI
40AQI
41AQI
40AQI
40AQI
44AQI
53AQI
49AQI
42AQI
35AQI
31AQI
34AQI
34AQI
30AQI
32AQI
34AQI
41AQI
45AQI
44AQI
43AQI
43AQI
45AQI
50AQI
47AQI
47AQI
49AQI
51AQI
52AQI
55AQI
46AQI
42AQI
45AQI
48AQI
47AQI
43AQI
40AQI
34AQI
31AQI
26AQI
30AQI
32AQI
37AQI
41AQI
40AQI
37AQI
33AQI
39AQI
41AQI
35AQI
41AQI
42AQI
30AQI
28AQI
25AQI
23AQI
24AQI
24AQI
25AQI
33AQI
26AQI
28AQI
32AQI
24AQI
23AQI
31AQI
42AQI
48AQI
55AQI
48AQI
58AQI
49AQI
52AQI
53AQI
51AQI
54AQI
39AQI
48AQI
48AQI
48AQI
48AQI
46AQI
53AQI
32AQI
33AQI
39AQI
34AQI
34AQI
39AQI
47AQI
43AQI
32AQI
48AQI
No. of days
202538AQI
Highest AQI recorded in
October48AQI
Lowest AQI recorded in
January32AQI
202431AQI
Highest AQI recorded in
April44AQI
Lowest AQI recorded in
October25AQI
202332AQI
Highest AQI recorded in
April42AQI
Lowest AQI recorded in
August25AQI
202232AQI
Highest AQI recorded in
April42AQI
Lowest AQI recorded in
December24AQI
202128AQI
Highest AQI recorded in
June37AQI
Lowest AQI recorded in
January23AQI
202024AQI
Highest AQI recorded in
August40AQI
Lowest AQI recorded in
September15AQI
Most & Least Polluted Years Over the Last 6 Years
Nasushiobara's annual 2025 AQI (38) shows an average percentage change of 30.6% (worsened AQI) compared to previous years: 2020 (24), 2021 (28), 2022 (32), 2023 (32), 2024 (31).