Honcho, Tokyo, 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
Honcho, Tokyo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (2nd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 39 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 3rd Aug - 4th Aug 2025
Honcho, Tokyo, Japan
4 AM3rd Aug 2025
6 PM
3 AM4th Aug 2025
AQI
AQI
60AQI
37AQI
In the last 24 hours,
Honcho's AQI reached its highest point of 60 at 12 PM during the Night, while the lowest point, 37, was recorded at 1 AM during the Night between 3rd Aug and 4th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Honcho, Tokyo, Japan
30°C27/34°C
31°C28/36°C
31°C28/35°C
30°C27/35°C
30°C27/34°C
30°C24/35°C
24°C23/26°C
25°C22/29°C
27°C24/31°C
27°C25/30°C
28°C26/31°C
28°C26/31°C
29°C26/32°C
28°C25/32°C
29°C25/33°C
30°C27/34°C
31°C28/36°C
31°C28/36°C
31°C29/36°C
32°C29/36°C
32°C29/36°C
32°C29/37°C
32°C29/36°C
32°C29/37°C
32°C28/38°C
31°C28/36°C
29°C26/34°C
28°C27/32°C
31°C27/37°C
--°C/°C
--°C/°C
47AQI
47AQI
45AQI
43AQI
2025 Days Vs Air Quality
Honcho, Tokyo, Japan
95%
203
5%
11
Total number of days with different AQI categories in last 215 days in 2025 (150 days remaining)
Under WHO’s Safe Air Quality Limits: 95%
Health Risk Level:
Very Low
In 2025, 95% of 215 days were within WHO’s safe air quality limits. The risk of health issues is Very Low, but health impacts are still unclear.
Annual Air Quality Insights
Honcho, Tokyo, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
28AQI
29AQI
24AQI
25AQI
24AQI
31AQI
24AQI
27AQI
24AQI
24AQI
22AQI
27AQI
27AQI
25AQI
27AQI
24AQI
26AQI
26AQI
29AQI
28AQI
31AQI
30AQI
31AQI
35AQI
31AQI
31AQI
24AQI
30AQI
24AQI
27AQI
26AQI
29AQI
29AQI
27AQI
30AQI
28AQI
27AQI
26AQI
27AQI
26AQI
26AQI
28AQI
27AQI
39AQI
27AQI
38AQI
31AQI
35AQI
29AQI
29AQI
28AQI
29AQI
28AQI
29AQI
27AQI
32AQI
32AQI
36AQI
40AQI
45AQI
45AQI
33AQI
31AQI
27AQI
30AQI
31AQI
31AQI
35AQI
32AQI
34AQI
33AQI
38AQI
25AQI
23AQI
18AQI
17AQI
16AQI
14AQI
17AQI
24AQI
28AQI
31AQI
33AQI
53AQI
62AQI
59AQI
40AQI
31AQI
36AQI
29AQI
24AQI
20AQI
18AQI
18AQI
18AQI
15AQI
17AQI
20AQI
18AQI
24AQI
24AQI
23AQI
20AQI
23AQI
20AQI
19AQI
26AQI
31AQI
36AQI
29AQI
26AQI
25AQI
17AQI
19AQI
22AQI
23AQI
24AQI
24AQI
17AQI
22AQI
20AQI
18AQI
17AQI
24AQI
19AQI
18AQI
15AQI
18AQI
18AQI
15AQI
16AQI
16AQI
19AQI
20AQI
22AQI
24AQI
18AQI
26AQI
27AQI
42AQI
39AQI
30AQI
29AQI
26AQI
20AQI
20AQI
19AQI
19AQI
20AQI
17AQI
14AQI
16AQI
18AQI
19AQI
17AQI
24AQI
25AQI
28AQI
33AQI
28AQI
23AQI
20AQI
24AQI
25AQI
21AQI
19AQI
22AQI
31AQI
25AQI
26AQI
25AQI
21AQI
13AQI
14AQI
14AQI
15AQI
15AQI
19AQI
18AQI
21AQI
34AQI
38AQI
44AQI
46AQI
46AQI
50AQI
58AQI
75AQI
78AQI
81AQI
62AQI
51AQI
54AQI
53AQI
44AQI
42AQI
40AQI
41AQI
37AQI
33AQI
34AQI
37AQI
39AQI
43AQI
44AQI
41AQI
40AQI
36AQI
41AQI
40AQI
33AQI
34AQI
34AQI
39AQI
27AQI
30AQI
32AQI
22AQI
21AQI
22AQI
46AQI
37AQI
No. of days
202529AQI
Highest AQI recorded in
July46AQI
Lowest AQI recorded in
May21AQI
202432AQI
Highest AQI recorded in
July42AQI
Lowest AQI recorded in
December25AQI
202333AQI
Highest AQI recorded in
April41AQI
Lowest AQI recorded in
August24AQI
202230AQI
Highest AQI recorded in
April36AQI
Lowest AQI recorded in
August22AQI
202122AQI
Highest AQI recorded in
June29AQI
Lowest AQI recorded in
February13AQI
202018AQI
Highest AQI recorded in
August30AQI
Lowest AQI recorded in
September12AQI
Most & Least Polluted Years Over the Last 6 Years
Honcho's annual 2025 AQI (29) shows an average percentage change of 12.9% (worsened AQI) compared to previous years: 2020 (18), 2021 (22), 2022 (30), 2023 (33), 2024 (32).