Ashino, Hokkaido, 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
Ashino, Hokkaido, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (6th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 2nd highest AQI at 23 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 5th Aug - 6th Aug 2026
Ashino, Hokkaido, Japan
4 AM5th Aug 2026
6 PM
3 AM6th Aug 2026
25AQI
21AQI
25AQI
21AQI
In the last 24 hours,
Ashino's AQI reached its highest point of 25 at 7 AM during the Day, while the lowest point, 21, was recorded at 3 AM during the Night between 5th Aug and 6th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Ashino, Hokkaido, Japan
16°C13/18°C
16°C14/18°C
16°C15/17°C
17°C16/19°C
16°C15/18°C
18°C16/21°C
17°C15/20°C
17°C16/18°C
17°C16/18°C
18°C16/19°C
18°C17/20°C
17°C17/17°C
18°C16/20°C
19°C17/21°C
18°C17/20°C
17°C15/19°C
15°C13/16°C
13°C12/14°C
15°C12/17°C
16°C14/18°C
17°C15/19°C
18°C15/20°C
15°C14/16°C
14°C13/15°C
15°C13/16°C
16°C12/19°C
17°C14/19°C
18°C15/20°C
18°C16/20°C
19°C17/21°C
25AQI
23AQI
26AQI
24AQI
2026 Days Vs Air Quality
Ashino, Hokkaido, Japan
86%
188
14%
30
Total number of days with different AQI categories in last 218 days in 2026 (147 days remaining)
Under WHO’s Safe Air Quality Limits: 86%
Health Risk Level:
Low
In 2026, 86% 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
Ashino, Hokkaido, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
24AQI (US)
25AQI (US)
18AQI (US)
22AQI (US)
22AQI (US)
25AQI (US)
29AQI (US)
31AQI (US)
22AQI (US)
31AQI (US)
35AQI (US)
15AQI (US)
20AQI (US)
29AQI (US)
24AQI (US)
35AQI (US)
25AQI (US)
22AQI (US)
28AQI (US)
20AQI (US)
17AQI (US)
20AQI (US)
34AQI (US)
36AQI (US)
27AQI (US)
42AQI (US)
43AQI (US)
18AQI (US)
18AQI (US)
49AQI (US)
15AQI (US)
14AQI (US)
29AQI (US)
29AQI (US)
30AQI (US)
30AQI (US)
42AQI (US)
22AQI (US)
25AQI (US)
44AQI (US)
48AQI (US)
61AQI (US)
22AQI (US)
20AQI (US)
55AQI (US)
42AQI (US)
18AQI (US)
20AQI (US)
23AQI (US)
39AQI (US)
36AQI (US)
48AQI (US)
47AQI (US)
23AQI (US)
22AQI (US)
46AQI (US)
51AQI (US)
44AQI (US)
40AQI (US)
37AQI (US)
52AQI (US)
47AQI (US)
58AQI (US)
61AQI (US)
53AQI (US)
45AQI (US)
46AQI (US)
44AQI (US)
54AQI (US)
52AQI (US)
62AQI (US)
40AQI (US)
47AQI (US)
59AQI (US)
37AQI (US)
42AQI (US)
43AQI (US)
52AQI (US)
38AQI (US)
33AQI (US)
52AQI (US)
63AQI (US)
40AQI (US)
40AQI (US)
29AQI (US)
33AQI (US)
46AQI (US)
58AQI (US)
65AQI (US)
42AQI (US)
27AQI (US)
31AQI (US)
53AQI (US)
53AQI (US)
24AQI (US)
22AQI (US)
26AQI (US)
22AQI (US)
38AQI (US)
54AQI (US)
34AQI (US)
27AQI (US)
30AQI (US)
35AQI (US)
37AQI (US)
34AQI (US)
37AQI (US)
36AQI (US)
32AQI (US)
30AQI (US)
42AQI (US)
43AQI (US)
16AQI (US)
21AQI (US)
51AQI (US)
47AQI (US)
33AQI (US)
23AQI (US)
27AQI (US)
36AQI (US)
40AQI (US)
40AQI (US)
37AQI (US)
34AQI (US)
24AQI (US)
31AQI (US)
29AQI (US)
25AQI (US)
24AQI (US)
26AQI (US)
27AQI (US)
36AQI (US)
34AQI (US)
27AQI (US)
30AQI (US)
84AQI (US)
71AQI (US)
56AQI (US)
55AQI (US)
64AQI (US)
60AQI (US)
71AQI (US)
65AQI (US)
67AQI (US)
61AQI (US)
43AQI (US)
20AQI (US)
25AQI (US)
23AQI (US)
23AQI (US)
24AQI (US)
24AQI (US)
45AQI (US)
46AQI (US)
26AQI (US)
17AQI (US)
19AQI (US)
19AQI (US)
20AQI (US)
18AQI (US)
22AQI (US)
24AQI (US)
22AQI (US)
23AQI (US)
22AQI (US)
20AQI (US)
25AQI (US)
22AQI (US)
24AQI (US)
26AQI (US)
22AQI (US)
19AQI (US)
19AQI (US)
21AQI (US)
21AQI (US)
25AQI (US)
27AQI (US)
26AQI (US)
25AQI (US)
22AQI (US)
20AQI (US)
21AQI (US)
22AQI (US)
22AQI (US)
23AQI (US)
19AQI (US)
24AQI (US)
22AQI (US)
19AQI (US)
17AQI (US)
23AQI (US)
28AQI (US)
26AQI (US)
18AQI (US)
25AQI (US)
24AQI (US)
22AQI (US)
24AQI (US)
25AQI (US)
25AQI (US)
21AQI (US)
27AQI (US)
27AQI (US)
25AQI (US)
25AQI (US)
27AQI (US)
24AQI (US)
23AQI (US)
26AQI (US)
28AQI (US)
27AQI (US)
25AQI (US)
26AQI (US)
25AQI (US)
25AQI (US)
30AQI (US)
23AQI (US)
23AQI (US)
26AQI (US)
35AQI (US)
47AQI (US)
34AQI (US)
41AQI (US)
24AQI (US)
24AQI (US)
25AQI (US)
No. of days
202633AQI (US)
Highest AQI (US) recorded in
March47AQI (US)
Lowest AQI (US) recorded in
July24AQI (US)
202534AQI (US)
Highest AQI (US) recorded in
July43AQI (US)
Lowest AQI (US) recorded in
April26AQI (US)
202424AQI (US)
Highest AQI (US) recorded in
July36AQI (US)
Lowest AQI (US) recorded in
September17AQI (US)
202327AQI (US)
Highest AQI (US) recorded in
March39AQI (US)
Lowest AQI (US) recorded in
December18AQI (US)
202222AQI (US)
Highest AQI (US) recorded in
April29AQI (US)
Lowest AQI (US) recorded in
August8AQI (US)
202124AQI (US)
Highest AQI (US) recorded in
March31AQI (US)
Lowest AQI (US) recorded in
September16AQI (US)
202023AQI (US)
Highest AQI (US) recorded in
March29AQI (US)
Lowest AQI (US) recorded in
November20AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Ashino's annual 2026 AQI (US) (33) shows an average percentage change of 31.2% (worsened AQI (US)) compared to previous years: 2020 (23), 2021 (24), 2022 (22), 2023 (27), 2024 (24), 2025 (34).