Shiratoridai, 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
Shiratoridai, Machida, Tokyo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (18th September ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 2nd highest AQI at 49 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
Shiratoridai, Machida, Tokyo, Japan
5 AM18th Sep 2025
6 PM
4 AM19th Sep 2025
AQI
AQI
76AQI
28AQI
In the last 24 hours,
Shiratoridai's AQI reached its highest point of 76 at 11 AM during the Night, while the lowest point, 28, was recorded at 8 PM during the Night between 18th Sep and 19th Sep 2025.
Day & Night AQI Trend : Aug - Sep 2025
Shiratoridai, Machida, Tokyo, Japan
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
--°C/°C
45AQI
43AQI
42AQI
40AQI
2025 Days Vs Air Quality
Shiratoridai, Machida, Tokyo, Japan
91%
237
9%
24
Total number of days with different AQI categories in last 261 days in 2025 (104 days remaining)
Under WHO’s Safe Air Quality Limits: 91%
Health Risk Level:
Very Low
In 2025, 91% 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
Shiratoridai, Machida, Tokyo, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
27AQI
30AQI
23AQI
26AQI
23AQI
49AQI
31AQI
34AQI
28AQI
26AQI
24AQI
25AQI
31AQI
26AQI
30AQI
22AQI
26AQI
26AQI
27AQI
29AQI
32AQI
38AQI
38AQI
38AQI
35AQI
32AQI
25AQI
29AQI
28AQI
26AQI
26AQI
23AQI
24AQI
28AQI
29AQI
29AQI
27AQI
26AQI
28AQI
27AQI
26AQI
29AQI
28AQI
31AQI
28AQI
29AQI
31AQI
33AQI
29AQI
29AQI
29AQI
29AQI
29AQI
31AQI
31AQI
33AQI
33AQI
36AQI
40AQI
53AQI
44AQI
38AQI
30AQI
28AQI
29AQI
31AQI
30AQI
34AQI
32AQI
31AQI
31AQI
36AQI
24AQI
21AQI
17AQI
16AQI
15AQI
14AQI
16AQI
23AQI
26AQI
27AQI
28AQI
44AQI
55AQI
53AQI
36AQI
29AQI
29AQI
27AQI
21AQI
20AQI
17AQI
17AQI
17AQI
14AQI
17AQI
19AQI
19AQI
22AQI
23AQI
22AQI
19AQI
23AQI
20AQI
19AQI
25AQI
28AQI
34AQI
26AQI
24AQI
22AQI
17AQI
18AQI
18AQI
21AQI
22AQI
20AQI
17AQI
20AQI
19AQI
16AQI
17AQI
26AQI
19AQI
18AQI
15AQI
17AQI
17AQI
15AQI
18AQI
17AQI
20AQI
20AQI
21AQI
22AQI
20AQI
26AQI
28AQI
59AQI
37AQI
32AQI
28AQI
27AQI
20AQI
23AQI
24AQI
17AQI
20AQI
16AQI
15AQI
16AQI
19AQI
23AQI
17AQI
25AQI
24AQI
39AQI
33AQI
29AQI
25AQI
23AQI
27AQI
25AQI
21AQI
22AQI
22AQI
33AQI
27AQI
27AQI
25AQI
20AQI
12AQI
13AQI
14AQI
18AQI
16AQI
23AQI
21AQI
23AQI
37AQI
37AQI
46AQI
43AQI
44AQI
52AQI
61AQI
78AQI
76AQI
77AQI
54AQI
51AQI
56AQI
52AQI
43AQI
43AQI
42AQI
45AQI
39AQI
33AQI
33AQI
35AQI
38AQI
42AQI
41AQI
36AQI
34AQI
31AQI
33AQI
40AQI
35AQI
34AQI
33AQI
41AQI
45AQI
63AQI
52AQI
51AQI
48AQI
44AQI
46AQI
37AQI
39AQI
35AQI
33AQI
36AQI
36AQI
38AQI
40AQI
43AQI
46AQI
47AQI
51AQI
50AQI
48AQI
57AQI
56AQI
54AQI
51AQI
46AQI
52AQI
55AQI
54AQI
42AQI
38AQI
37AQI
42AQI
32AQI
29AQI
30AQI
39AQI
42AQI
36AQI
31AQI
31AQI
29AQI
36AQI
34AQI
38AQI
49AQI
49AQI
29AQI
29AQI
31AQI
21AQI
22AQI
23AQI
45AQI
46AQI
37AQI
No. of days
202531AQI
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
April21AQI
202434AQI
Highest AQI recorded in
September41AQI
Lowest AQI recorded in
December26AQI
202330AQI
Highest AQI recorded in
April37AQI
Lowest AQI recorded in
August22AQI
202236AQI
Highest AQI recorded in
June53AQI
Lowest AQI recorded in
October23AQI
202129AQI
Highest AQI recorded in
September40AQI
Lowest AQI recorded in
February11AQI
202034AQI
Highest AQI recorded in
August62AQI
Lowest AQI recorded in
September11AQI
Most & Least Polluted Years Over the Last 6 Years
Shiratoridai's annual 2025 AQI (31) shows an average percentage change of -2.3% (improved AQI) compared to previous years: 2020 (34), 2021 (29), 2022 (36), 2023 (30), 2024 (34).