Chaa, Natori Shi, 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
Chaa, Natori Shi, Miyagi, 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 42 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
Chaa, Natori Shi, Miyagi, Japan
4 AM5th Aug 2025
6 PM
3 AM6th Aug 2025
50AQI
36AQI
43AQI
35AQI
In the last 24 hours,
Chaa's AQI reached its highest point of 50 at 10 AM during the Day, while the lowest point, 35, was recorded at 7 PM during the Night between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Chaa, Natori Shi, Miyagi, Japan
26°C23/30°C
26°C23/29°C
25°C22/29°C
21°C19/22°C
19°C18/20°C
19°C18/21°C
22°C18/25°C
22°C20/24°C
24°C23/26°C
25°C22/29°C
25°C23/29°C
25°C22/28°C
24°C22/28°C
26°C23/29°C
26°C23/31°C
27°C23/32°C
27°C24/32°C
27°C24/32°C
27°C23/32°C
26°C23/31°C
27°C24/32°C
27°C24/32°C
27°C23/31°C
25°C22/28°C
25°C22/28°C
24°C21/27°C
26°C24/30°C
27°C24/31°C
26°C24/30°C
29°C25/33°C
--°C/°C
50AQI
50AQI
49AQI
49AQI
2025 Days Vs Air Quality
Chaa, Natori Shi, Miyagi, Japan
83%
180
17%
37
Total number of days with different AQI categories in last 218 days in 2025 (147 days remaining)
Under WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% 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
Chaa, Natori Shi, Miyagi, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI
26AQI
25AQI
24AQI
25AQI
33AQI
24AQI
26AQI
23AQI
21AQI
23AQI
25AQI
25AQI
31AQI
24AQI
26AQI
23AQI
26AQI
33AQI
41AQI
48AQI
40AQI
40AQI
40AQI
33AQI
29AQI
30AQI
29AQI
25AQI
26AQI
26AQI
31AQI
31AQI
33AQI
29AQI
24AQI
24AQI
29AQI
24AQI
25AQI
25AQI
25AQI
33AQI
26AQI
29AQI
23AQI
33AQI
39AQI
26AQI
28AQI
22AQI
23AQI
22AQI
22AQI
24AQI
31AQI
39AQI
38AQI
52AQI
50AQI
59AQI
36AQI
37AQI
25AQI
27AQI
26AQI
33AQI
30AQI
43AQI
42AQI
47AQI
52AQI
43AQI
46AQI
31AQI
24AQI
31AQI
25AQI
32AQI
50AQI
55AQI
46AQI
41AQI
64AQI
64AQI
63AQI
53AQI
39AQI
38AQI
39AQI
31AQI
28AQI
23AQI
22AQI
26AQI
33AQI
31AQI
40AQI
33AQI
45AQI
49AQI
38AQI
28AQI
24AQI
23AQI
24AQI
44AQI
50AQI
66AQI
57AQI
48AQI
49AQI
46AQI
43AQI
39AQI
53AQI
53AQI
53AQI
32AQI
28AQI
26AQI
27AQI
32AQI
32AQI
36AQI
31AQI
28AQI
37AQI
37AQI
30AQI
26AQI
27AQI
42AQI
45AQI
44AQI
51AQI
42AQI
47AQI
43AQI
54AQI
55AQI
48AQI
47AQI
41AQI
29AQI
29AQI
32AQI
31AQI
34AQI
29AQI
21AQI
22AQI
37AQI
41AQI
34AQI
37AQI
45AQI
55AQI
58AQI
60AQI
50AQI
44AQI
42AQI
35AQI
40AQI
29AQI
25AQI
29AQI
34AQI
40AQI
35AQI
35AQI
37AQI
44AQI
38AQI
40AQI
34AQI
34AQI
33AQI
36AQI
42AQI
44AQI
47AQI
54AQI
54AQI
54AQI
57AQI
57AQI
58AQI
67AQI
55AQI
50AQI
48AQI
50AQI
46AQI
52AQI
53AQI
49AQI
51AQI
45AQI
49AQI
49AQI
49AQI
52AQI
53AQI
55AQI
56AQI
57AQI
51AQI
52AQI
45AQI
40AQI
36AQI
38AQI
40AQI
47AQI
42AQI
29AQI
29AQI
42AQI
39AQI
37AQI
39AQI
52AQI
41AQI
No. of days
202538AQI
Highest AQI recorded in
July52AQI
Lowest AQI recorded in
February29AQI
202436AQI
Highest AQI recorded in
April53AQI
Lowest AQI recorded in
December23AQI
202338AQI
Highest AQI recorded in
April52AQI
Lowest AQI recorded in
January30AQI
202235AQI
Highest AQI recorded in
August49AQI
Lowest AQI recorded in
December21AQI
202133AQI
Highest AQI recorded in
March44AQI
Lowest AQI recorded in
December27AQI
202033AQI
Highest AQI recorded in
August45AQI
Lowest AQI recorded in
December22AQI
Most & Least Polluted Years Over the Last 6 Years
Chaa's annual 2025 AQI (38) shows an average percentage change of 9.2% (worsened AQI) compared to previous years: 2020 (33), 2021 (33), 2022 (35), 2023 (38), 2024 (36).