Tanashicho, Honcho, Tokyo, Japan Historical Air Quality Analysis
Dive into detailed Air Quality Insights with historical data, monthly patterns, and yearly trends at your fingertips!
September Air Quality Analysis
Tanashicho, Honcho, Tokyo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (17th September ):
On this day, AQI across the 2 years varied significantly: 2025 ranks 2nd highest AQI at 47 of Good air quality, showing improvement over 2024 on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 18th Sep - 19th Sep 2025
Tanashicho, Honcho, Tokyo, Japan
5 AM18th Sep 2025
6 PM
4 AM19th Sep 2025
AQI
AQI
72AQI
22AQI
In the last 24 hours,
Tanashicho's AQI reached its highest point of 72 at 12 PM during the Night, while the lowest point, undefined, was recorded at 4 AM during the Night between 18th Sep and 19th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Tanashicho, Honcho, Tokyo, Japan
32°C29/36°C
32°C29/37°C
31°C28/36°C
33°C29/37°C
33°C30/38°C
32°C29/37°C
31°C29/34°C
32°C29/36°C
29°C28/32°C
30°C27/34°C
33°C29/37°C
33°C30/37°C
32°C29/36°C
33°C29/37°C
32°C29/36°C
27°C27/28°C
25°C23/26°C
27°C24/32°C
29°C26/33°C
31°C27/36°C
30°C28/33°C
30°C28/32°C
27°C24/30°C
25°C24/27°C
27°C24/31°C
29°C26/33°C
29°C26/32°C
29°C28/33°C
31°C27/35°C
--°C/°C
--°C/°C
46AQI
42AQI
42AQI
39AQI
2025 Days Vs Air Quality
Tanashicho, Honcho, Tokyo, Japan
92%
240
8%
20
Total number of days with different AQI categories in last 261 days in 2025 (104 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2025, 92% of 261 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
Tanashicho, Honcho, Tokyo, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
30AQI
33AQI
26AQI
25AQI
24AQI
31AQI
24AQI
27AQI
23AQI
24AQI
22AQI
26AQI
27AQI
25AQI
27AQI
23AQI
26AQI
26AQI
29AQI
28AQI
32AQI
30AQI
31AQI
36AQI
31AQI
32AQI
23AQI
30AQI
24AQI
26AQI
27AQI
29AQI
30AQI
27AQI
30AQI
28AQI
27AQI
27AQI
28AQI
27AQI
26AQI
29AQI
27AQI
37AQI
27AQI
37AQI
32AQI
33AQI
29AQI
29AQI
28AQI
29AQI
28AQI
30AQI
28AQI
33AQI
33AQI
36AQI
40AQI
46AQI
45AQI
32AQI
30AQI
26AQI
30AQI
31AQI
31AQI
35AQI
32AQI
33AQI
32AQI
37AQI
24AQI
22AQI
18AQI
16AQI
16AQI
14AQI
16AQI
23AQI
27AQI
29AQI
31AQI
51AQI
60AQI
57AQI
38AQI
30AQI
35AQI
28AQI
23AQI
20AQI
17AQI
18AQI
17AQI
14AQI
16AQI
18AQI
16AQI
21AQI
21AQI
21AQI
18AQI
22AQI
20AQI
18AQI
23AQI
27AQI
31AQI
25AQI
24AQI
21AQI
15AQI
16AQI
19AQI
19AQI
20AQI
20AQI
15AQI
19AQI
18AQI
16AQI
16AQI
24AQI
19AQI
17AQI
15AQI
17AQI
17AQI
14AQI
16AQI
16AQI
18AQI
18AQI
21AQI
23AQI
17AQI
26AQI
27AQI
45AQI
38AQI
28AQI
28AQI
26AQI
20AQI
19AQI
18AQI
17AQI
20AQI
16AQI
14AQI
16AQI
19AQI
19AQI
18AQI
24AQI
26AQI
29AQI
35AQI
28AQI
21AQI
20AQI
25AQI
24AQI
19AQI
19AQI
22AQI
30AQI
24AQI
25AQI
25AQI
21AQI
13AQI
13AQI
14AQI
14AQI
14AQI
19AQI
18AQI
21AQI
35AQI
40AQI
46AQI
46AQI
45AQI
49AQI
59AQI
74AQI
79AQI
82AQI
61AQI
51AQI
55AQI
54AQI
45AQI
42AQI
41AQI
41AQI
39AQI
34AQI
36AQI
37AQI
39AQI
44AQI
44AQI
41AQI
40AQI
35AQI
41AQI
40AQI
33AQI
34AQI
35AQI
42AQI
45AQI
62AQI
52AQI
51AQI
47AQI
46AQI
49AQI
37AQI
38AQI
35AQI
33AQI
35AQI
34AQI
37AQI
39AQI
42AQI
45AQI
47AQI
49AQI
49AQI
49AQI
56AQI
56AQI
55AQI
50AQI
47AQI
52AQI
55AQI
54AQI
44AQI
38AQI
37AQI
37AQI
30AQI
29AQI
31AQI
38AQI
41AQI
37AQI
31AQI
31AQI
28AQI
37AQI
39AQI
39AQI
47AQI
27AQI
30AQI
31AQI
20AQI
21AQI
22AQI
47AQI
46AQI
36AQI
No. of days
202531AQI
Highest AQI recorded in
July47AQI
Lowest AQI recorded in
April20AQI
202434AQI
Highest AQI recorded in
September45AQI
Lowest AQI recorded in
April10AQI
202326AQI
Highest AQI recorded in
December27AQI
Lowest AQI recorded in
November19AQI
202036AQI
Highest AQI recorded in
August50AQI
Lowest AQI recorded in
March10AQI
Most & Least Polluted Years Over the Last 4 Years
Tanashicho's annual 2025 AQI (31) shows an average percentage change of -2.2% (improved AQI) compared to previous years: 2020 (36), 2023 (26), 2024 (34).