Oiwake, Hokuto, 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
Oiwake, Hokuto, Hokkaido, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (14th August):
On this day, AQI across the 4 years varied significantly: 2026 ranks 2nd highest AQI at 36 of Good air quality, showing improvement over 2025 on the same day.
Day & Night AQI Trend: 13th Aug - 14th Aug 2026
Oiwake, Hokuto, Hokkaido, Japan
4 AM13th Aug 2026
6 PM
3 AM14th Aug 2026
56AQI
25AQI
42AQI
25AQI
In the last 24 hours,
Oiwake's AQI reached its highest point of 56 at 10 AM during the Day, while the lowest point, 25, was recorded at 12 AM during the Night between 13th Aug and 14th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Oiwake, Hokuto, Hokkaido, Japan
22°C20/24°C
22°C19/25°C
20°C20/21°C
21°C20/22°C
21°C20/24°C
22°C20/24°C
20°C20/21°C
21°C19/23°C
20°C18/22°C
18°C18/19°C
18°C17/18°C
19°C18/20°C
20°C18/22°C
20°C20/21°C
20°C19/20°C
21°C19/24°C
19°C18/20°C
19°C17/21°C
19°C17/22°C
20°C18/22°C
21°C19/24°C
21°C18/23°C
23°C20/27°C
24°C21/27°C
21°C20/22°C
20°C18/23°C
22°C17/26°C
22°C22/23°C
22°C22/23°C
23°C22/24°C
35AQI
28AQI
40AQI
30AQI
2026 Days Vs Air Quality
Oiwake, Hokuto, Hokkaido, Japan
84%
189
16%
37
Total number of days with different AQI categories in last 226 days in 2026 (139 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2026, 84% of 226 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
Oiwake, Hokuto, Hokkaido, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI (US)
23AQI (US)
20AQI (US)
24AQI (US)
28AQI (US)
24AQI (US)
29AQI (US)
28AQI (US)
25AQI (US)
21AQI (US)
27AQI (US)
22AQI (US)
26AQI (US)
26AQI (US)
29AQI (US)
34AQI (US)
33AQI (US)
26AQI (US)
28AQI (US)
33AQI (US)
20AQI (US)
22AQI (US)
35AQI (US)
32AQI (US)
40AQI (US)
36AQI (US)
30AQI (US)
28AQI (US)
28AQI (US)
41AQI (US)
45AQI (US)
33AQI (US)
35AQI (US)
28AQI (US)
30AQI (US)
37AQI (US)
37AQI (US)
15AQI (US)
20AQI (US)
44AQI (US)
50AQI (US)
67AQI (US)
26AQI (US)
20AQI (US)
72AQI (US)
56AQI (US)
30AQI (US)
19AQI (US)
19AQI (US)
32AQI (US)
33AQI (US)
43AQI (US)
41AQI (US)
33AQI (US)
24AQI (US)
32AQI (US)
38AQI (US)
45AQI (US)
40AQI (US)
38AQI (US)
67AQI (US)
52AQI (US)
60AQI (US)
61AQI (US)
53AQI (US)
46AQI (US)
46AQI (US)
43AQI (US)
54AQI (US)
54AQI (US)
64AQI (US)
41AQI (US)
46AQI (US)
61AQI (US)
44AQI (US)
51AQI (US)
56AQI (US)
49AQI (US)
37AQI (US)
41AQI (US)
51AQI (US)
56AQI (US)
67AQI (US)
48AQI (US)
31AQI (US)
20AQI (US)
37AQI (US)
76AQI (US)
81AQI (US)
78AQI (US)
38AQI (US)
32AQI (US)
51AQI (US)
56AQI (US)
25AQI (US)
19AQI (US)
25AQI (US)
23AQI (US)
34AQI (US)
52AQI (US)
33AQI (US)
27AQI (US)
32AQI (US)
37AQI (US)
39AQI (US)
38AQI (US)
38AQI (US)
37AQI (US)
36AQI (US)
32AQI (US)
44AQI (US)
49AQI (US)
16AQI (US)
15AQI (US)
48AQI (US)
49AQI (US)
35AQI (US)
14AQI (US)
18AQI (US)
36AQI (US)
39AQI (US)
43AQI (US)
38AQI (US)
35AQI (US)
20AQI (US)
21AQI (US)
25AQI (US)
29AQI (US)
21AQI (US)
32AQI (US)
28AQI (US)
35AQI (US)
42AQI (US)
30AQI (US)
34AQI (US)
79AQI (US)
67AQI (US)
56AQI (US)
53AQI (US)
63AQI (US)
64AQI (US)
73AQI (US)
69AQI (US)
69AQI (US)
65AQI (US)
46AQI (US)
35AQI (US)
10AQI (US)
15AQI (US)
21AQI (US)
26AQI (US)
33AQI (US)
55AQI (US)
47AQI (US)
21AQI (US)
17AQI (US)
20AQI (US)
19AQI (US)
20AQI (US)
22AQI (US)
21AQI (US)
23AQI (US)
20AQI (US)
23AQI (US)
22AQI (US)
19AQI (US)
33AQI (US)
25AQI (US)
20AQI (US)
10AQI (US)
17AQI (US)
19AQI (US)
18AQI (US)
21AQI (US)
22AQI (US)
26AQI (US)
25AQI (US)
16AQI (US)
18AQI (US)
22AQI (US)
21AQI (US)
27AQI (US)
18AQI (US)
21AQI (US)
23AQI (US)
22AQI (US)
22AQI (US)
20AQI (US)
19AQI (US)
14AQI (US)
16AQI (US)
17AQI (US)
9AQI (US)
13AQI (US)
12AQI (US)
13AQI (US)
8AQI (US)
25AQI (US)
47AQI (US)
30AQI (US)
28AQI (US)
29AQI (US)
37AQI (US)
26AQI (US)
34AQI (US)
20AQI (US)
34AQI (US)
29AQI (US)
31AQI (US)
28AQI (US)
34AQI (US)
22AQI (US)
24AQI (US)
49AQI (US)
52AQI (US)
52AQI (US)
53AQI (US)
48AQI (US)
50AQI (US)
28AQI (US)
22AQI (US)
24AQI (US)
39AQI (US)
40AQI (US)
42AQI (US)
36AQI (US)
29AQI (US)
36AQI (US)
52AQI (US)
34AQI (US)
41AQI (US)
23AQI (US)
23AQI (US)
40AQI (US)
No. of days
202634AQI (US)
Highest AQI (US) recorded in
March52AQI (US)
Lowest AQI (US) recorded in
July23AQI (US)
202537AQI (US)
Highest AQI (US) recorded in
October49AQI (US)
Lowest AQI (US) recorded in
April30AQI (US)
202434AQI (US)
Highest AQI (US) recorded in
March46AQI (US)
Lowest AQI (US) recorded in
December25AQI (US)
202336AQI (US)
Highest AQI (US) recorded in
December36AQI (US)
Lowest AQI (US) recorded in
November35AQI (US)
202232AQI (US)
Highest AQI (US) recorded in
April37AQI (US)
Lowest AQI (US) recorded in
January27AQI (US)
202130AQI (US)
Highest AQI (US) recorded in
March34AQI (US)
Lowest AQI (US) recorded in
October26AQI (US)
202026AQI (US)
Highest AQI (US) recorded in
August33AQI (US)
Lowest AQI (US) recorded in
November22AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Oiwake's annual 2026 AQI (US) (34) shows an average percentage change of 6.1% (worsened AQI (US)) compared to previous years: 2020 (26), 2021 (30), 2022 (32), 2023 (36), 2024 (34), 2025 (37).