Kobuchi, Machida, 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
Kobuchi, Machida, Tokyo, Japan
AQI Trends: Highest and Lowest
Same Day Analysis (3rd August ):
On this day, AQI across the 5 years varied significantly: 2025 ranks 1st highest AQI at 45 of Good air quality on the same day.
Download 2024 Annual Data
World Air Quality Report

Day & Night AQI Trend: 4th Aug - 5th Aug 2025
Kobuchi, Machida, Tokyo, Japan
4 AM4th Aug 2025
6 PM
3 AM5th Aug 2025
AQI
AQI
97AQI
42AQI
In the last 24 hours,
Kobuchi's AQI reached its highest point of 97 at 2 PM during the Night, while the lowest point, 42, was recorded at 3 AM during the Night between 4th Aug and 5th Aug 2025.
Day & Night AQI Trend : Jul - Aug 2025
Kobuchi, Machida, Tokyo, Japan
30°C27/35°C
30°C27/34°C
29°C27/33°C
29°C26/33°C
29°C24/34°C
24°C23/27°C
25°C22/29°C
26°C24/30°C
26°C25/29°C
27°C26/29°C
27°C25/30°C
28°C25/31°C
27°C24/31°C
28°C25/31°C
29°C25/32°C
30°C27/34°C
30°C27/35°C
30°C27/34°C
30°C27/35°C
31°C27/34°C
30°C27/35°C
30°C27/34°C
30°C27/35°C
30°C26/36°C
30°C27/36°C
29°C26/34°C
28°C26/32°C
31°C27/35°C
31°C27/37°C
--°C/°C
--°C/°C
49AQI
40AQI
45AQI
38AQI
2025 Days Vs Air Quality
Kobuchi, Machida, Tokyo, Japan
96%
206
4%
9
Total number of days with different AQI categories in last 216 days in 2025 (149 days remaining)
Under WHO’s Safe Air Quality Limits: 96%
Health Risk Level:
Very Low
In 2025, 96% of 216 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
Kobuchi, Machida, Tokyo, Japan
AQI levels in 2025
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sep.
Oct.
Nov.
Dec.
25AQI
29AQI
23AQI
25AQI
22AQI
34AQI
26AQI
31AQI
28AQI
30AQI
25AQI
27AQI
28AQI
26AQI
27AQI
23AQI
25AQI
25AQI
28AQI
27AQI
29AQI
32AQI
35AQI
34AQI
31AQI
30AQI
25AQI
27AQI
25AQI
24AQI
25AQI
23AQI
23AQI
26AQI
26AQI
26AQI
26AQI
25AQI
25AQI
26AQI
25AQI
27AQI
26AQI
28AQI
26AQI
26AQI
29AQI
30AQI
26AQI
27AQI
26AQI
26AQI
26AQI
27AQI
28AQI
29AQI
28AQI
30AQI
34AQI
50AQI
36AQI
36AQI
28AQI
26AQI
27AQI
28AQI
29AQI
30AQI
28AQI
29AQI
27AQI
30AQI
22AQI
20AQI
16AQI
16AQI
15AQI
14AQI
17AQI
25AQI
26AQI
28AQI
28AQI
46AQI
57AQI
54AQI
34AQI
29AQI
28AQI
25AQI
21AQI
20AQI
18AQI
18AQI
18AQI
14AQI
15AQI
17AQI
18AQI
20AQI
21AQI
21AQI
18AQI
20AQI
19AQI
18AQI
24AQI
27AQI
31AQI
24AQI
22AQI
20AQI
14AQI
15AQI
17AQI
19AQI
20AQI
19AQI
14AQI
18AQI
17AQI
16AQI
17AQI
23AQI
18AQI
18AQI
15AQI
17AQI
16AQI
13AQI
15AQI
15AQI
18AQI
18AQI
19AQI
20AQI
19AQI
23AQI
26AQI
50AQI
37AQI
31AQI
28AQI
23AQI
18AQI
18AQI
20AQI
16AQI
18AQI
14AQI
13AQI
14AQI
16AQI
17AQI
17AQI
24AQI
23AQI
32AQI
29AQI
25AQI
22AQI
21AQI
24AQI
22AQI
19AQI
21AQI
20AQI
27AQI
26AQI
25AQI
23AQI
20AQI
13AQI
13AQI
15AQI
17AQI
16AQI
20AQI
19AQI
23AQI
36AQI
40AQI
46AQI
44AQI
45AQI
52AQI
60AQI
77AQI
75AQI
73AQI
53AQI
47AQI
53AQI
48AQI
40AQI
39AQI
40AQI
40AQI
34AQI
30AQI
31AQI
33AQI
35AQI
39AQI
42AQI
37AQI
35AQI
32AQI
34AQI
39AQI
33AQI
35AQI
35AQI
42AQI
45AQI
27AQI
27AQI
29AQI
19AQI
20AQI
21AQI
44AQI
41AQI
No. of days
202527AQI
Highest AQI recorded in
July44AQI
Lowest AQI recorded in
April19AQI
202431AQI
Highest AQI recorded in
June41AQI
Lowest AQI recorded in
December24AQI
202331AQI
Highest AQI recorded in
April39AQI
Lowest AQI recorded in
September25AQI
202236AQI
Highest AQI recorded in
May44AQI
Lowest AQI recorded in
December28AQI
202125AQI
Highest AQI recorded in
June37AQI
Lowest AQI recorded in
January11AQI
202025AQI
Highest AQI recorded in
August46AQI
Lowest AQI recorded in
September10AQI
Most & Least Polluted Years Over the Last 6 Years
Kobuchi's annual 2025 AQI (27) shows an average percentage change of -7.5% (improved AQI) compared to previous years: 2020 (25), 2021 (25), 2022 (36), 2023 (31), 2024 (31).