Chofugaoka, 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
Chofugaoka, Tokyo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (16th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 40 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 17th Sep - 18th Sep 2025
Chofugaoka, Tokyo, Japan
5 AM17th Sep 2025
6 PM
4 AM18th Sep 2025
AQI
AQI
61AQI
36AQI
In the last 24 hours,
Chofugaoka's AQI reached its highest point of 61 at 2 PM during the Night, while the lowest point, 36, was recorded at 4 AM during the Night between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Chofugaoka, Tokyo, Japan
31°C27/35°C
32°C29/35°C
32°C29/36°C
31°C28/35°C
32°C29/36°C
33°C30/37°C
32°C29/36°C
31°C29/34°C
32°C29/35°C
29°C27/32°C
30°C27/33°C
32°C29/37°C
32°C30/36°C
31°C29/35°C
32°C29/36°C
31°C29/36°C
27°C27/28°C
25°C23/26°C
27°C24/32°C
29°C26/32°C
31°C27/35°C
30°C28/33°C
30°C28/32°C
28°C25/30°C
25°C24/27°C
27°C24/31°C
29°C27/33°C
29°C27/32°C
29°C28/33°C
--°C/°C
--°C/°C
45AQI
42AQI
41AQI
41AQI
2025 Days Vs Air Quality
Chofugaoka, Tokyo, Japan
92%
238
8%
21
Total number of days with different AQI categories in last 260 days in 2025 (105 days remaining)
Under WHO’s Safe Air Quality Limits: 92%
Health Risk Level:
Very Low
In 2025, 92% of 260 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
Chofugaoka, Tokyo, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
29AQI
32AQI
28AQI
31AQI
26AQI
44AQI
33AQI
34AQI
30AQI
27AQI
25AQI
27AQI
31AQI
27AQI
32AQI
24AQI
28AQI
27AQI
30AQI
31AQI
32AQI
37AQI
37AQI
36AQI
34AQI
33AQI
32AQI
30AQI
30AQI
27AQI
28AQI
26AQI
26AQI
28AQI
30AQI
30AQI
28AQI
28AQI
29AQI
29AQI
27AQI
29AQI
29AQI
32AQI
30AQI
30AQI
32AQI
33AQI
30AQI
30AQI
29AQI
30AQI
30AQI
31AQI
32AQI
33AQI
34AQI
36AQI
40AQI
50AQI
45AQI
39AQI
30AQI
27AQI
31AQI
32AQI
31AQI
34AQI
33AQI
32AQI
34AQI
37AQI
29AQI
26AQI
21AQI
20AQI
19AQI
17AQI
19AQI
25AQI
28AQI
29AQI
30AQI
47AQI
57AQI
55AQI
37AQI
31AQI
32AQI
28AQI
23AQI
21AQI
18AQI
20AQI
19AQI
15AQI
16AQI
18AQI
18AQI
22AQI
22AQI
21AQI
18AQI
22AQI
20AQI
19AQI
25AQI
31AQI
34AQI
26AQI
24AQI
22AQI
16AQI
18AQI
19AQI
20AQI
21AQI
20AQI
15AQI
20AQI
20AQI
18AQI
17AQI
23AQI
18AQI
18AQI
16AQI
17AQI
17AQI
14AQI
16AQI
16AQI
19AQI
19AQI
20AQI
21AQI
17AQI
22AQI
25AQI
52AQI
39AQI
32AQI
27AQI
24AQI
19AQI
19AQI
20AQI
16AQI
18AQI
15AQI
13AQI
15AQI
17AQI
20AQI
17AQI
22AQI
22AQI
33AQI
29AQI
25AQI
21AQI
21AQI
23AQI
22AQI
19AQI
19AQI
20AQI
28AQI
24AQI
26AQI
24AQI
20AQI
13AQI
13AQI
14AQI
16AQI
15AQI
19AQI
18AQI
20AQI
34AQI
37AQI
44AQI
44AQI
44AQI
50AQI
59AQI
74AQI
76AQI
79AQI
58AQI
52AQI
55AQI
53AQI
44AQI
43AQI
41AQI
43AQI
38AQI
33AQI
33AQI
35AQI
35AQI
38AQI
41AQI
36AQI
35AQI
31AQI
35AQI
38AQI
32AQI
33AQI
33AQI
41AQI
45AQI
62AQI
51AQI
51AQI
47AQI
45AQI
47AQI
37AQI
38AQI
36AQI
33AQI
36AQI
36AQI
37AQI
39AQI
43AQI
45AQI
48AQI
50AQI
50AQI
48AQI
56AQI
56AQI
54AQI
51AQI
47AQI
51AQI
55AQI
53AQI
43AQI
38AQI
37AQI
38AQI
34AQI
29AQI
30AQI
38AQI
42AQI
36AQI
31AQI
31AQI
28AQI
36AQI
35AQI
40AQI
31AQI
30AQI
32AQI
21AQI
21AQI
21AQI
45AQI
46AQI
35AQI
No. of days
202531AQI
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
April21AQI
202433AQI
Highest AQI recorded in
July43AQI
Lowest AQI recorded in
December28AQI
202335AQI
Highest AQI recorded in
April43AQI
Lowest AQI recorded in
August24AQI
202234AQI
Highest AQI recorded in
March41AQI
Lowest AQI recorded in
August21AQI
202127AQI
Highest AQI recorded in
June37AQI
Lowest AQI recorded in
January16AQI
202025AQI
Highest AQI recorded in
August40AQI
Lowest AQI recorded in
September14AQI
Most & Least Polluted Years Over the Last 6 Years
Chofugaoka's annual 2025 AQI (31) shows an average percentage change of 2.3% (worsened AQI) compared to previous years: 2020 (25), 2021 (27), 2022 (34), 2023 (35), 2024 (33).