Suehiro, Ichikawa, Chiba, 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
Suehiro, Ichikawa, Chiba, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (4th August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 51 of Moderate air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 5th Aug - 6th Aug 2025
Suehiro, Ichikawa, Chiba, Japan
4 AM5th Aug 2025
6 PM
3 AM6th Aug 2025
AQI
AQI
58AQI
45AQI
In the last 24 hours,
Suehiro's AQI reached its highest point of 58 at 11 AM during the Night, while the lowest point, undefined, was recorded at 3 AM during the Night between 5th Aug and 6th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Suehiro, Ichikawa, Chiba, Japan
29°C27/33°C
29°C27/32°C
29°C26/32°C
28°C23/32°C
24°C22/26°C
24°C21/28°C
26°C24/29°C
26°C24/29°C
27°C26/28°C
27°C26/28°C
27°C26/30°C
27°C25/30°C
28°C25/30°C
28°C26/31°C
29°C27/32°C
29°C27/31°C
29°C26/31°C
29°C26/33°C
29°C27/32°C
29°C28/32°C
29°C27/32°C
29°C27/33°C
30°C26/35°C
29°C26/34°C
28°C25/32°C
28°C25/31°C
29°C26/33°C
30°C27/35°C
30°C28/33°C
--°C/°C
--°C/°C
46AQI
37AQI
44AQI
38AQI
2025 Days Vs Air Quality
Suehiro, Ichikawa, Chiba, Japan
88%
191
12%
25
Total number of days with different AQI categories in last 217 days in 2025 (148 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2025, 88% of 217 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
Suehiro, Ichikawa, Chiba, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
32AQI
32AQI
25AQI
29AQI
36AQI
49AQI
32AQI
33AQI
28AQI
28AQI
29AQI
37AQI
30AQI
43AQI
38AQI
33AQI
32AQI
31AQI
50AQI
42AQI
42AQI
40AQI
53AQI
48AQI
42AQI
36AQI
39AQI
41AQI
32AQI
34AQI
28AQI
39AQI
32AQI
40AQI
32AQI
32AQI
27AQI
30AQI
29AQI
29AQI
27AQI
30AQI
33AQI
32AQI
29AQI
30AQI
38AQI
35AQI
31AQI
29AQI
28AQI
29AQI
30AQI
31AQI
33AQI
33AQI
37AQI
39AQI
55AQI
51AQI
61AQI
41AQI
39AQI
25AQI
33AQI
31AQI
34AQI
34AQI
34AQI
44AQI
49AQI
42AQI
39AQI
36AQI
25AQI
21AQI
25AQI
17AQI
24AQI
41AQI
50AQI
56AQI
53AQI
66AQI
78AQI
70AQI
51AQI
38AQI
41AQI
31AQI
29AQI
21AQI
20AQI
20AQI
26AQI
25AQI
30AQI
39AQI
28AQI
46AQI
41AQI
38AQI
27AQI
39AQI
32AQI
32AQI
47AQI
52AQI
62AQI
51AQI
45AQI
45AQI
30AQI
43AQI
37AQI
47AQI
49AQI
44AQI
36AQI
46AQI
40AQI
31AQI
32AQI
38AQI
35AQI
28AQI
25AQI
29AQI
29AQI
23AQI
28AQI
26AQI
36AQI
34AQI
38AQI
41AQI
30AQI
45AQI
43AQI
61AQI
44AQI
39AQI
40AQI
38AQI
31AQI
27AQI
23AQI
23AQI
27AQI
25AQI
17AQI
22AQI
30AQI
35AQI
33AQI
40AQI
47AQI
48AQI
56AQI
40AQI
31AQI
27AQI
35AQI
35AQI
31AQI
34AQI
40AQI
51AQI
48AQI
47AQI
42AQI
34AQI
24AQI
24AQI
23AQI
21AQI
21AQI
28AQI
28AQI
31AQI
34AQI
34AQI
39AQI
39AQI
40AQI
47AQI
60AQI
74AQI
76AQI
75AQI
60AQI
54AQI
55AQI
53AQI
46AQI
43AQI
42AQI
43AQI
39AQI
36AQI
34AQI
34AQI
32AQI
32AQI
33AQI
29AQI
28AQI
27AQI
31AQI
29AQI
27AQI
26AQI
32AQI
40AQI
42AQI
51AQI
36AQI
33AQI
41AQI
38AQI
33AQI
35AQI
42AQI
41AQI
No. of days
202537AQI
Highest AQI recorded in
July42AQI
Lowest AQI recorded in
February33AQI
202436AQI
Highest AQI recorded in
July47AQI
Lowest AQI recorded in
September27AQI
202336AQI
Highest AQI recorded in
April43AQI
Lowest AQI recorded in
August24AQI
202236AQI
Highest AQI recorded in
March40AQI
Lowest AQI recorded in
August19AQI
202133AQI
Highest AQI recorded in
December42AQI
Lowest AQI recorded in
April27AQI
202030AQI
Highest AQI recorded in
December37AQI
Lowest AQI recorded in
September21AQI
Most & Least Polluted Years Over the Last 6 Years
Suehiro's annual 2025 AQI (37) shows an average percentage change of 8.7% (worsened AQI) compared to previous years: 2020 (30), 2021 (33), 2022 (36), 2023 (36), 2024 (36).