Air Quality in Kumamoto, Japan

Heavy Rain
20.4°C · 94.7% humidity
20.4°
Feels 20.4°
26
Good
Air quality is satisfactory. Enjoy outdoor activities.
9 stations

Nearby Monitoring Stations

AQI Forecast
54 3am
54
54
26 6am
46
52
56 9am
76
78
79 12pm
80
64
65 3pm
65
65
65 6pm
66
66
66 9pm
66
66
66 12am
83
83
AD 728×90

Air Quality Index Trend

48h · 1 stn

Kumamoto's air quality is influenced by industrial emissions, vehicle traffic, and regional pollution transport. Winter heating season and spring dust events typically create the most challenging air quality conditions. Current PM2.5 concentration in Kumamoto is 1.2× the WHO annual guideline of 5 µg/m³.

94.7%
Humidity
30.3 km/h
Wind SSE
1004.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
26
6.24 µg/m³
PM10▲
60
73.05 µg/m³
050100150200300500

What is the weather forecast for Kumamoto?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.56.24 µg/m³ ✓ WHO
Good
PM1073.05 µg/m³
Moderate
UV INDEX0.7
Low
AD 300×250
Station readings (9 stations within 25 km)
6.24
Median
6.44
Average
3.8
Low
9.4
High
PM2.5 µg/m³ · Model: 20.3 · Bias: +14.1

What is the 7-day forecast for Kumamoto?

05-28
21.9° 15.4°
35.87 mm
05-29
23.4° 19.7°
18.38 mm
05-30
24.5° 19.1°
0.5 mm
05-31
26.9° 19.3°
06-01
28.4° 19.1°
1.56 mm
06-02
26.6° 21.3°
0.56 mm
06-03
25.4° 17.6°
12.13 mm
Both models agree Avg diff: 2.4°C

Where are air quality stations near Kumamoto?

33
Suidōchō, Kumamoto-ken, Japan (水道町自排局熊本市中央区)
2.1 km PM2.5: 7.9 µg/m³
38
Suidōchō, Kumamoto-ken, Japan (水道町自排局熊本市中央区)
2.1 km PM2.5: 9.1 µg/m³
9
Kuwamizuhonmachi, Kumamoto Prefecture, Japan (神水本町自排局熊本市中央区)
5.3 km PM2.5: 2.2 µg/m³
34
Kuwamizuhonmachi, Kumamoto Prefecture, Japan (神水本町自排局熊本市中央区)
5.3 km PM2.5: 8.2 µg/m³
9
Nakashimamachi, Kumamoto Prefecture, Japan (中島熊本市西区)
7.0 km PM2.5: 2.2 µg/m³
39
Nakashimamachi, Kumamoto Prefecture, Japan (中島熊本市西区)
7.0 km PM2.5: 9.4 µg/m³
18
Nirenoki, Kumamoto, Japan (楡木熊本市北区)
7.4 km PM2.5: 4.3 µg/m³
33
Nirenoki, Kumamoto, Japan (楡木熊本市北区)
7.4 km PM2.5: 7.9 µg/m³
21
Akitsu, Kumamoto-ken, Japan (秋津熊本市東区)
8.3 km PM2.5: 5.0 µg/m³
5
Akitsu, Kumamoto-ken, Japan (秋津熊本市東区)
8.3 km PM2.5: 1.2 µg/m³

What cities are near Kumamoto?

26 Kotō 39 Uekimachi-mōno 26 Shimada 26 Okino 28 Kōshi 20 Uto 29 Mifune 20 Matsubase 16 Ōzu 35 Tamana
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-28T21:36 UTC.