Machida, 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
Machida, Tokyo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (17th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 44 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
Machida, Tokyo, Japan
5 AM17th Sep 2025
6 PM
4 AM18th Sep 2025
61AQI
40AQI
56AQI
36AQI
In the last 24 hours,
Machida's AQI reached its highest point of 61 at 2 PM during the Day, while the lowest point, 36, was recorded at 3 AM during the Night between 17th Sep and 18th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Machida, Tokyo, Japan
30°C27/35°C
31°C28/35°C
31°C28/35°C
31°C28/34°C
32°C29/36°C
32°C29/36°C
31°C28/36°C
30°C28/33°C
31°C27/35°C
29°C27/32°C
29°C26/32°C
32°C28/36°C
32°C29/36°C
31°C28/35°C
31°C28/36°C
31°C28/35°C
26°C25/27°C
25°C22/26°C
26°C24/30°C
28°C25/31°C
30°C27/34°C
30°C28/32°C
29°C27/32°C
27°C24/31°C
25°C23/27°C
27°C24/31°C
29°C26/33°C
28°C26/31°C
29°C27/32°C
30°C26/34°C
--°C/°C
48AQI
43AQI
42AQI
41AQI
2025 Days Vs Air Quality
Machida, Tokyo, Japan
92%
239
8%
21
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
Machida, Tokyo, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
28AQI
31AQI
24AQI
26AQI
22AQI
39AQI
29AQI
32AQI
28AQI
26AQI
24AQI
25AQI
29AQI
25AQI
29AQI
22AQI
26AQI
26AQI
27AQI
27AQI
29AQI
33AQI
35AQI
36AQI
33AQI
32AQI
26AQI
28AQI
27AQI
25AQI
26AQI
24AQI
25AQI
26AQI
28AQI
28AQI
27AQI
27AQI
28AQI
28AQI
26AQI
29AQI
28AQI
30AQI
28AQI
29AQI
30AQI
33AQI
29AQI
29AQI
28AQI
29AQI
29AQI
30AQI
31AQI
32AQI
33AQI
35AQI
37AQI
49AQI
40AQI
37AQI
29AQI
27AQI
29AQI
31AQI
30AQI
33AQI
32AQI
31AQI
29AQI
34AQI
23AQI
20AQI
16AQI
16AQI
15AQI
14AQI
16AQI
23AQI
26AQI
28AQI
30AQI
47AQI
56AQI
54AQI
35AQI
29AQI
30AQI
26AQI
21AQI
20AQI
17AQI
18AQI
18AQI
14AQI
16AQI
18AQI
18AQI
22AQI
22AQI
21AQI
18AQI
22AQI
20AQI
19AQI
25AQI
29AQI
32AQI
26AQI
24AQI
22AQI
15AQI
17AQI
18AQI
21AQI
22AQI
20AQI
16AQI
20AQI
19AQI
16AQI
16AQI
21AQI
17AQI
17AQI
14AQI
17AQI
16AQI
14AQI
16AQI
16AQI
18AQI
18AQI
19AQI
20AQI
18AQI
22AQI
24AQI
53AQI
44AQI
34AQI
27AQI
24AQI
19AQI
19AQI
20AQI
15AQI
18AQI
15AQI
14AQI
14AQI
16AQI
19AQI
17AQI
21AQI
21AQI
31AQI
28AQI
24AQI
22AQI
21AQI
23AQI
21AQI
19AQI
21AQI
23AQI
29AQI
25AQI
26AQI
23AQI
19AQI
12AQI
13AQI
14AQI
17AQI
15AQI
21AQI
19AQI
22AQI
36AQI
39AQI
45AQI
43AQI
44AQI
51AQI
61AQI
77AQI
76AQI
75AQI
54AQI
48AQI
54AQI
50AQI
41AQI
40AQI
40AQI
41AQI
36AQI
31AQI
31AQI
34AQI
36AQI
40AQI
42AQI
37AQI
35AQI
32AQI
34AQI
40AQI
33AQI
34AQI
34AQI
42AQI
46AQI
62AQI
53AQI
51AQI
47AQI
44AQI
46AQI
35AQI
38AQI
36AQI
34AQI
38AQI
38AQI
39AQI
41AQI
44AQI
47AQI
48AQI
50AQI
51AQI
49AQI
57AQI
57AQI
56AQI
52AQI
47AQI
52AQI
56AQI
54AQI
44AQI
39AQI
39AQI
37AQI
32AQI
31AQI
31AQI
40AQI
43AQI
39AQI
33AQI
32AQI
30AQI
38AQI
35AQI
37AQI
44AQI
28AQI
29AQI
30AQI
20AQI
21AQI
21AQI
44AQI
47AQI
37AQI
No. of days
202531AQI
Highest AQI recorded in
August47AQI
Lowest AQI recorded in
April20AQI
202434AQI
Highest AQI recorded in
July45AQI
Lowest AQI recorded in
December25AQI
202334AQI
Highest AQI recorded in
April42AQI
Lowest AQI recorded in
August26AQI
202234AQI
Highest AQI recorded in
May42AQI
Lowest AQI recorded in
December28AQI
202128AQI
Highest AQI recorded in
June37AQI
Lowest AQI recorded in
February18AQI
202027AQI
Highest AQI recorded in
August44AQI
Lowest AQI recorded in
September15AQI
Most & Least Polluted Years Over the Last 6 Years
Machida's annual 2025 AQI (31) shows an average percentage change of -1.4% (improved AQI) compared to previous years: 2020 (27), 2021 (28), 2022 (34), 2023 (34), 2024 (34).