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
Ichikawa, Chiba, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (12th August):
On this day, AQI across the 5 years varied significantly: 2026 ranks 3rd highest AQI at 25 of Good air quality, showing improvement over 2025 and 2024 on the same day.
Day & Night AQI Trend: 11th Aug - 12th Aug 2026
Ichikawa, Chiba, Japan
4 AM11th Aug 2026
6 PM
3 AM12th Aug 2026
39AQI
28AQI
29AQI
23AQI
In the last 24 hours,
Ichikawa's AQI reached its highest point of 39 at 8 AM during the Day, while the lowest point, 23, was recorded at 3 AM during the Night between 11th Aug and 12th Aug 2026.
Day & Night AQI Trend : Jul - Aug 2026
Ichikawa, Chiba, Japan
27°C24/31°C
29°C26/32°C
29°C26/35°C
28°C26/30°C
27°C25/30°C
27°C24/30°C
30°C26/34°C
30°C27/35°C
30°C27/34°C
31°C28/37°C
29°C26/33°C
29°C24/34°C
28°C25/31°C
26°C23/29°C
26°C23/30°C
29°C25/35°C
31°C27/35°C
30°C27/35°C
30°C26/35°C
29°C24/34°C
25°C23/27°C
25°C22/29°C
26°C23/30°C
29°C25/33°C
29°C26/33°C
29°C25/33°C
28°C25/33°C
26°C24/30°C
23°C20/27°C
23°C22/25°C
41AQI
33AQI
39AQI
33AQI
2026 Days Vs Air Quality
Ichikawa, Chiba, Japan
88%
196
13%
28
Total number of days with different AQI categories in last 224 days in 2026 (141 days remaining)
Under WHO’s Safe Air Quality Limits: 88%
Health Risk Level:
Low
In 2026, 88% of 224 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
Ichikawa, Chiba, Japan
AQI levels in 2026
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
15AQI (US)
18AQI (US)
14AQI (US)
22AQI (US)
45AQI (US)
20AQI (US)
29AQI (US)
40AQI (US)
14AQI (US)
36AQI (US)
30AQI (US)
17AQI (US)
36AQI (US)
16AQI (US)
26AQI (US)
47AQI (US)
52AQI (US)
23AQI (US)
43AQI (US)
42AQI (US)
11AQI (US)
21AQI (US)
38AQI (US)
40AQI (US)
43AQI (US)
23AQI (US)
41AQI (US)
25AQI (US)
18AQI (US)
27AQI (US)
37AQI (US)
38AQI (US)
47AQI (US)
26AQI (US)
40AQI (US)
63AQI (US)
63AQI (US)
12AQI (US)
11AQI (US)
33AQI (US)
39AQI (US)
52AQI (US)
28AQI (US)
46AQI (US)
61AQI (US)
61AQI (US)
47AQI (US)
15AQI (US)
38AQI (US)
17AQI (US)
24AQI (US)
46AQI (US)
49AQI (US)
35AQI (US)
42AQI (US)
34AQI (US)
22AQI (US)
36AQI (US)
30AQI (US)
24AQI (US)
60AQI (US)
42AQI (US)
44AQI (US)
28AQI (US)
36AQI (US)
42AQI (US)
33AQI (US)
42AQI (US)
56AQI (US)
55AQI (US)
63AQI (US)
37AQI (US)
45AQI (US)
56AQI (US)
48AQI (US)
46AQI (US)
49AQI (US)
37AQI (US)
30AQI (US)
50AQI (US)
47AQI (US)
46AQI (US)
46AQI (US)
61AQI (US)
28AQI (US)
28AQI (US)
50AQI (US)
52AQI (US)
55AQI (US)
27AQI (US)
24AQI (US)
32AQI (US)
45AQI (US)
46AQI (US)
37AQI (US)
29AQI (US)
26AQI (US)
21AQI (US)
29AQI (US)
47AQI (US)
47AQI (US)
32AQI (US)
41AQI (US)
38AQI (US)
35AQI (US)
34AQI (US)
33AQI (US)
30AQI (US)
32AQI (US)
32AQI (US)
36AQI (US)
45AQI (US)
38AQI (US)
32AQI (US)
45AQI (US)
51AQI (US)
48AQI (US)
42AQI (US)
39AQI (US)
36AQI (US)
47AQI (US)
48AQI (US)
48AQI (US)
33AQI (US)
21AQI (US)
29AQI (US)
29AQI (US)
25AQI (US)
25AQI (US)
29AQI (US)
28AQI (US)
32AQI (US)
38AQI (US)
33AQI (US)
34AQI (US)
86AQI (US)
69AQI (US)
53AQI (US)
49AQI (US)
62AQI (US)
59AQI (US)
61AQI (US)
53AQI (US)
58AQI (US)
47AQI (US)
39AQI (US)
24AQI (US)
25AQI (US)
24AQI (US)
23AQI (US)
27AQI (US)
32AQI (US)
22AQI (US)
14AQI (US)
22AQI (US)
22AQI (US)
21AQI (US)
22AQI (US)
20AQI (US)
23AQI (US)
22AQI (US)
24AQI (US)
22AQI (US)
37AQI (US)
43AQI (US)
12AQI (US)
23AQI (US)
24AQI (US)
24AQI (US)
25AQI (US)
23AQI (US)
20AQI (US)
19AQI (US)
20AQI (US)
22AQI (US)
26AQI (US)
29AQI (US)
24AQI (US)
26AQI (US)
24AQI (US)
24AQI (US)
36AQI (US)
25AQI (US)
18AQI (US)
40AQI (US)
20AQI (US)
26AQI (US)
26AQI (US)
23AQI (US)
22AQI (US)
23AQI (US)
23AQI (US)
26AQI (US)
41AQI (US)
44AQI (US)
41AQI (US)
69AQI (US)
52AQI (US)
19AQI (US)
18AQI (US)
31AQI (US)
46AQI (US)
67AQI (US)
62AQI (US)
40AQI (US)
34AQI (US)
27AQI (US)
24AQI (US)
29AQI (US)
34AQI (US)
37AQI (US)
47AQI (US)
61AQI (US)
49AQI (US)
18AQI (US)
27AQI (US)
26AQI (US)
25AQI (US)
28AQI (US)
34AQI (US)
29AQI (US)
27AQI (US)
31AQI (US)
25AQI (US)
29AQI (US)
38AQI (US)
44AQI (US)
37AQI (US)
41AQI (US)
24AQI (US)
35AQI (US)
32AQI (US)
No. of days
202635AQI (US)
Highest AQI (US) recorded in
March44AQI (US)
Lowest AQI (US) recorded in
June24AQI (US)
202537AQI (US)
Highest AQI (US) recorded in
November47AQI (US)
Lowest AQI (US) recorded in
May26AQI (US)
202435AQI (US)
Highest AQI (US) recorded in
July44AQI (US)
Lowest AQI (US) recorded in
August28AQI (US)
202336AQI (US)
Highest AQI (US) recorded in
April44AQI (US)
Lowest AQI (US) recorded in
August24AQI (US)
202235AQI (US)
Highest AQI (US) recorded in
August45AQI (US)
Lowest AQI (US) recorded in
September29AQI (US)
202130AQI (US)
Highest AQI (US) recorded in
June37AQI (US)
Lowest AQI (US) recorded in
February24AQI (US)
202025AQI (US)
Highest AQI (US) recorded in
August31AQI (US)
Lowest AQI (US) recorded in
September20AQI (US)
Most & Least Polluted Years Over the Last 7 Years
Ichikawa's annual 2026 AQI (US) (35) shows an average percentage change of 8.08% (worsened AQI (US)) compared to previous years: 2020 (25), 2021 (30), 2022 (35), 2023 (36), 2024 (35), 2025 (37).