Arai, Sendai, Miyagi, 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
Arai, Sendai, Miyagi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (6th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 41 of Good air quality, showing improvement over 2023 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 6th Aug - 7th Aug 2025
Arai, Sendai, Miyagi, Japan
4 AM6th Aug 2025
6 PM
3 AM7th Aug 2025
AQI
AQI
47AQI
32AQI
In the last 24 hours,
Arai's AQI reached its highest point of 47 at 5 PM during the Night, while the lowest point, 32, was recorded at 2 PM during the Night between 6th Aug and 7th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Arai, Sendai, Miyagi, Japan
26°C23/30°C
25°C22/30°C
21°C19/23°C
19°C18/20°C
19°C17/21°C
22°C18/26°C
23°C20/24°C
24°C22/26°C
26°C23/30°C
25°C23/30°C
25°C22/29°C
25°C21/29°C
26°C22/31°C
27°C23/33°C
27°C23/34°C
28°C24/34°C
28°C24/34°C
27°C23/33°C
27°C23/33°C
28°C24/33°C
28°C24/34°C
27°C23/33°C
25°C22/29°C
25°C22/29°C
24°C22/27°C
27°C24/31°C
27°C24/32°C
27°C24/31°C
29°C24/34°C
--°C/°C
--°C/°C
51AQI
49AQI
49AQI
49AQI
2025 Days Vs Air Quality
Arai, Sendai, Miyagi, Japan
84%
184
16%
34
Total number of days with different AQI categories in last 218 days in 2025 (147 days remaining)
Under WHO’s Safe Air Quality Limits: 84%
Health Risk Level:
Low
In 2025, 84% 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
Arai, Sendai, Miyagi, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
31AQI
31AQI
25AQI
24AQI
26AQI
33AQI
24AQI
24AQI
22AQI
20AQI
22AQI
24AQI
25AQI
33AQI
25AQI
26AQI
23AQI
27AQI
33AQI
40AQI
48AQI
38AQI
43AQI
38AQI
33AQI
28AQI
30AQI
29AQI
23AQI
26AQI
25AQI
26AQI
28AQI
28AQI
27AQI
23AQI
23AQI
27AQI
21AQI
23AQI
25AQI
24AQI
29AQI
27AQI
26AQI
28AQI
29AQI
38AQI
27AQI
27AQI
23AQI
22AQI
22AQI
22AQI
23AQI
28AQI
40AQI
35AQI
50AQI
46AQI
58AQI
34AQI
35AQI
23AQI
24AQI
24AQI
31AQI
27AQI
36AQI
37AQI
45AQI
49AQI
42AQI
40AQI
28AQI
23AQI
27AQI
23AQI
28AQI
47AQI
53AQI
38AQI
38AQI
59AQI
62AQI
59AQI
49AQI
37AQI
37AQI
36AQI
31AQI
24AQI
22AQI
20AQI
24AQI
33AQI
26AQI
38AQI
32AQI
43AQI
45AQI
35AQI
27AQI
24AQI
25AQI
23AQI
44AQI
50AQI
64AQI
53AQI
45AQI
45AQI
46AQI
42AQI
35AQI
52AQI
52AQI
50AQI
30AQI
27AQI
25AQI
25AQI
32AQI
31AQI
34AQI
28AQI
29AQI
34AQI
37AQI
28AQI
25AQI
25AQI
39AQI
45AQI
43AQI
46AQI
38AQI
45AQI
41AQI
52AQI
54AQI
44AQI
43AQI
37AQI
25AQI
27AQI
30AQI
30AQI
33AQI
28AQI
19AQI
20AQI
34AQI
38AQI
32AQI
37AQI
43AQI
55AQI
56AQI
56AQI
45AQI
45AQI
38AQI
32AQI
33AQI
28AQI
24AQI
29AQI
34AQI
38AQI
33AQI
34AQI
32AQI
39AQI
36AQI
36AQI
31AQI
32AQI
32AQI
35AQI
41AQI
44AQI
46AQI
53AQI
54AQI
53AQI
57AQI
57AQI
59AQI
69AQI
57AQI
51AQI
48AQI
50AQI
45AQI
47AQI
49AQI
51AQI
51AQI
47AQI
50AQI
51AQI
51AQI
53AQI
55AQI
56AQI
57AQI
57AQI
54AQI
54AQI
49AQI
45AQI
34AQI
36AQI
38AQI
43AQI
41AQI
41AQI
29AQI
28AQI
39AQI
37AQI
35AQI
37AQI
52AQI
39AQI
No. of days
202537AQI
Highest AQI recorded in
July52AQI
Lowest AQI recorded in
February28AQI
202431AQI
Highest AQI recorded in
April44AQI
Lowest AQI recorded in
January21AQI
202335AQI
Highest AQI recorded in
April49AQI
Lowest AQI recorded in
October24AQI
202232AQI
Highest AQI recorded in
August51AQI
Lowest AQI recorded in
December21AQI
202130AQI
Highest AQI recorded in
March44AQI
Lowest AQI recorded in
October23AQI
202028AQI
Highest AQI recorded in
August36AQI
Lowest AQI recorded in
July21AQI
Most & Least Polluted Years Over the Last 6 Years
Arai's annual 2025 AQI (37) shows an average percentage change of 18.5% (worsened AQI) compared to previous years: 2020 (28), 2021 (30), 2022 (32), 2023 (35), 2024 (31).