Morioka, Iwate, 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
Morioka, Iwate, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (5th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 3rd highest AQI at 44 of Good air quality, showing improvement over 2023 and 2021 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Morioka, Iwate, Japan
4 AM5th Aug 2025
6 PM
3 AM6th Aug 2025
51AQI
39AQI
44AQI
36AQI
In the last 24 hours,
Morioka's AQI reached its highest point of 51 at 2 PM during the Day, while the lowest point, 36, was recorded at 11 PM during the Night between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Morioka, Iwate, Japan
25°C17/33°C
27°C20/34°C
26°C20/34°C
23°C18/29°C
19°C15/25°C
19°C14/24°C
21°C15/29°C
23°C18/30°C
23°C19/26°C
25°C21/29°C
22°C19/27°C
25°C19/33°C
25°C19/32°C
25°C18/32°C
25°C17/33°C
25°C18/32°C
24°C18/32°C
25°C18/33°C
25°C17/34°C
24°C18/30°C
24°C18/31°C
25°C18/33°C
26°C19/35°C
25°C19/33°C
25°C19/32°C
25°C19/32°C
26°C20/33°C
26°C20/34°C
26°C21/32°C
24°C20/29°C
--°C/°C
46AQI
42AQI
46AQI
42AQI
2025 Days Vs Air Quality
Morioka, Iwate, Japan
89%
193
11%
24
Total number of days with different AQI categories in last 218 days in 2025 (147 days remaining)
Under WHO’s Safe Air Quality Limits: 89%
Health Risk Level:
Low
In 2025, 89% 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
Morioka, Iwate, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
26AQI
27AQI
26AQI
26AQI
26AQI
34AQI
29AQI
30AQI
25AQI
26AQI
26AQI
28AQI
26AQI
33AQI
29AQI
27AQI
26AQI
28AQI
34AQI
43AQI
52AQI
45AQI
49AQI
44AQI
41AQI
34AQI
34AQI
32AQI
29AQI
30AQI
29AQI
28AQI
31AQI
33AQI
30AQI
30AQI
29AQI
34AQI
36AQI
31AQI
31AQI
31AQI
34AQI
32AQI
32AQI
30AQI
40AQI
51AQI
32AQI
35AQI
28AQI
28AQI
29AQI
28AQI
30AQI
32AQI
39AQI
36AQI
52AQI
54AQI
62AQI
40AQI
41AQI
32AQI
32AQI
31AQI
33AQI
34AQI
37AQI
42AQI
47AQI
51AQI
44AQI
36AQI
31AQI
20AQI
25AQI
26AQI
37AQI
49AQI
52AQI
33AQI
38AQI
59AQI
49AQI
61AQI
47AQI
37AQI
35AQI
32AQI
31AQI
23AQI
21AQI
19AQI
26AQI
30AQI
26AQI
33AQI
28AQI
39AQI
39AQI
33AQI
28AQI
22AQI
24AQI
25AQI
41AQI
43AQI
46AQI
44AQI
40AQI
42AQI
36AQI
28AQI
26AQI
52AQI
46AQI
53AQI
29AQI
25AQI
25AQI
23AQI
33AQI
31AQI
32AQI
33AQI
24AQI
38AQI
39AQI
26AQI
26AQI
33AQI
33AQI
42AQI
46AQI
52AQI
40AQI
43AQI
45AQI
50AQI
49AQI
40AQI
40AQI
37AQI
25AQI
27AQI
29AQI
32AQI
39AQI
39AQI
28AQI
25AQI
34AQI
40AQI
31AQI
36AQI
37AQI
51AQI
51AQI
57AQI
51AQI
46AQI
40AQI
39AQI
42AQI
29AQI
28AQI
30AQI
35AQI
39AQI
38AQI
37AQI
43AQI
38AQI
38AQI
40AQI
34AQI
34AQI
34AQI
36AQI
42AQI
43AQI
46AQI
53AQI
55AQI
52AQI
53AQI
54AQI
53AQI
57AQI
51AQI
47AQI
47AQI
49AQI
44AQI
44AQI
46AQI
45AQI
48AQI
49AQI
43AQI
41AQI
39AQI
39AQI
37AQI
41AQI
43AQI
42AQI
39AQI
41AQI
41AQI
42AQI
39AQI
40AQI
41AQI
45AQI
44AQI
32AQI
33AQI
40AQI
33AQI
35AQI
39AQI
46AQI
42AQI
No. of days
202537AQI
Highest AQI recorded in
July46AQI
Lowest AQI recorded in
January32AQI
202435AQI
Highest AQI recorded in
April48AQI
Lowest AQI recorded in
December26AQI
202338AQI
Highest AQI recorded in
April50AQI
Lowest AQI recorded in
September29AQI
202235AQI
Highest AQI recorded in
April43AQI
Lowest AQI recorded in
August25AQI
202132AQI
Highest AQI recorded in
June39AQI
Lowest AQI recorded in
September27AQI
202031AQI
Highest AQI recorded in
August42AQI
Lowest AQI recorded in
July24AQI
Most & Least Polluted Years Over the Last 6 Years
Morioka's annual 2025 AQI (37) shows an average percentage change of 9.4% (worsened AQI) compared to previous years: 2020 (31), 2021 (32), 2022 (35), 2023 (38), 2024 (35).