Chuo, Utsunomiya, Tochigi, 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
Chuo, Utsunomiya, Tochigi, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (7th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 44 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 7th Aug - 8th Aug 2025
Chuo, Utsunomiya, Tochigi, Japan
4 AM7th Aug 2025
6 PM
3 AM8th Aug 2025
AQI
AQI
51AQI
21AQI
In the last 24 hours,
Chuo's AQI reached its highest point of 51 at 4 AM during the Night, while the lowest point, 21, was recorded at 3 PM during the Night between 7th Aug and 8th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Chuo, Utsunomiya, Tochigi, Japan
30°C25/36°C
26°C22/31°C
21°C20/22°C
22°C20/25°C
25°C20/30°C
24°C22/28°C
25°C24/28°C
26°C23/29°C
27°C25/31°C
27°C23/32°C
28°C23/33°C
29°C24/35°C
30°C25/36°C
30°C25/36°C
30°C25/36°C
30°C25/36°C
30°C24/37°C
30°C24/37°C
30°C25/36°C
31°C25/37°C
30°C26/37°C
28°C24/35°C
27°C23/34°C
27°C23/31°C
30°C26/37°C
30°C26/36°C
30°C25/37°C
32°C27/39°C
29°C26/36°C
--°C/°C
--°C/°C
48AQI
41AQI
45AQI
43AQI
2025 Days Vs Air Quality
Chuo, Utsunomiya, Tochigi, Japan
83%
182
17%
37
Total number of days with different AQI categories in last 219 days in 2025 (146 days remaining)
Under WHO’s Safe Air Quality Limits: 83%
Health Risk Level:
Low
In 2025, 83% of 219 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
Chuo, Utsunomiya, Tochigi, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
30AQI
24AQI
25AQI
31AQI
48AQI
33AQI
35AQI
33AQI
28AQI
30AQI
32AQI
36AQI
42AQI
39AQI
37AQI
37AQI
34AQI
56AQI
43AQI
46AQI
40AQI
43AQI
48AQI
37AQI
37AQI
33AQI
38AQI
31AQI
34AQI
31AQI
31AQI
37AQI
34AQI
33AQI
33AQI
30AQI
29AQI
31AQI
28AQI
29AQI
29AQI
35AQI
35AQI
34AQI
28AQI
41AQI
38AQI
33AQI
29AQI
30AQI
32AQI
31AQI
31AQI
33AQI
43AQI
41AQI
46AQI
51AQI
55AQI
59AQI
38AQI
39AQI
29AQI
36AQI
31AQI
41AQI
37AQI
39AQI
47AQI
52AQI
49AQI
48AQI
46AQI
28AQI
27AQI
27AQI
20AQI
30AQI
40AQI
53AQI
56AQI
55AQI
71AQI
65AQI
70AQI
58AQI
37AQI
37AQI
32AQI
27AQI
22AQI
24AQI
25AQI
31AQI
28AQI
31AQI
43AQI
30AQI
48AQI
40AQI
40AQI
27AQI
25AQI
29AQI
26AQI
46AQI
55AQI
67AQI
62AQI
46AQI
53AQI
31AQI
40AQI
33AQI
49AQI
46AQI
55AQI
33AQI
47AQI
43AQI
32AQI
33AQI
34AQI
37AQI
32AQI
27AQI
32AQI
38AQI
21AQI
24AQI
22AQI
37AQI
42AQI
45AQI
50AQI
33AQI
39AQI
43AQI
56AQI
63AQI
52AQI
50AQI
40AQI
32AQI
31AQI
27AQI
27AQI
32AQI
28AQI
19AQI
23AQI
35AQI
39AQI
32AQI
39AQI
48AQI
54AQI
63AQI
59AQI
45AQI
35AQI
42AQI
41AQI
39AQI
29AQI
37AQI
39AQI
36AQI
40AQI
40AQI
36AQI
33AQI
33AQI
34AQI
26AQI
27AQI
33AQI
35AQI
43AQI
48AQI
51AQI
50AQI
50AQI
51AQI
54AQI
58AQI
71AQI
75AQI
83AQI
58AQI
44AQI
45AQI
49AQI
34AQI
36AQI
39AQI
36AQI
35AQI
33AQI
37AQI
42AQI
43AQI
44AQI
49AQI
51AQI
54AQI
53AQI
51AQI
51AQI
46AQI
47AQI
36AQI
41AQI
44AQI
55AQI
50AQI
47AQI
44AQI
36AQI
34AQI
44AQI
39AQI
36AQI
39AQI
49AQI
45AQI
No. of days
202540AQI
Highest AQI recorded in
July49AQI
Lowest AQI recorded in
February34AQI
202438AQI
Highest AQI recorded in
April49AQI
Lowest AQI recorded in
August29AQI
202339AQI
Highest AQI recorded in
April49AQI
Lowest AQI recorded in
August31AQI
202239AQI
Highest AQI recorded in
April45AQI
Lowest AQI recorded in
September31AQI
202140AQI
Highest AQI recorded in
June46AQI
Lowest AQI recorded in
January36AQI
202039AQI
Highest AQI recorded in
August50AQI
Lowest AQI recorded in
September29AQI
Most & Least Polluted Years Over the Last 6 Years
Chuo's annual 2025 AQI (40) shows an average percentage change of 2.4% (worsened AQI) compared to previous years: 2020 (39), 2021 (40), 2022 (39), 2023 (39), 2024 (38).