Air Quality in Kōshi, Japan

Cloudy
19.1°C · 83.0% humidity
19.1°
Feels 19.1°
48
Good
Air quality is satisfactory. Enjoy outdoor activities.
9 stations

Nearby Monitoring Stations

AQI Forecast
66 11pm
66
83
48 2am
58
65
53 5am
57
59
49 8am
51
25
23 11am
24
24
26 2pm
27
27
27 5pm
34
54
54 8pm
54
54
AD 728×90

Air Quality Index Trend

47h · 21 stn

Kōshi'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.

83.0%
Humidity
19.6 km/h
Wind ENE
1016.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
48
11.53 µg/m³
PM10▲
76
104.9 µg/m³
050100150200300500

What is the weather forecast for Kōshi?

Temperature & Precipitation

PM2.5 Trend

47h · 21 stations
PM2.511.53 µg/m³ ✓ WHO
Good
PM10104.9 µg/m³
Moderate
UV INDEX0.7
Low
AD 300×250
Station readings (9 stations within 25 km)
11.53
Median
11.9
Average
7.2
Low
15.9
High
PM2.5 µg/m³ · Model: 27.1 · Bias: +15.6

What is the 7-day forecast for Kōshi?

05-29
22.1° 19.1°
16.88 mm
05-30
22.6° 19.2°
1.13 mm
05-31
26.3° 18.7°
06-01
30.2° 18.8°
1.69 mm
06-02
24.8° 20.8°
0.5 mm
06-03
23.4° 17.1°
14.37 mm
06-04
27.8° 18.4°
28.69 mm
Both models agree Avg diff: 2.8°C

Where are air quality stations near Kōshi?

21
Nirenoki, Kumamoto, Japan (楡木熊本市北区)
5.4 km PM2.5: 5.0 µg/m³
17
Nirenoki, Kumamoto, Japan (楡木熊本市北区)
5.4 km PM2.5: 4.1 µg/m³
47
Uekimachi Iwano, Kumamoto-ken, Japan (北区役所熊本市北区)
7.6 km PM2.5: 11.3 µg/m³
54
Uekimachi Iwano, Kumamoto-ken, Japan (北区役所熊本市北区)
7.6 km PM2.5: 13.5 µg/m³
17
Waifu, Kikuchi, Kumamoto, Japan (菊池市役所菊池市)
10.1 km PM2.5: 4.1 µg/m³
38
Waifu, Kikuchi, Kumamoto, Japan (菊池市役所菊池市)
10.1 km PM2.5: 9.1 µg/m³
42
Hikimizu, Kumamoto, Japan (大津町引水菊池郡大津町)
10.1 km PM2.5: 10.1 µg/m³
44
Suidōchō, Kumamoto-ken, Japan (水道町自排局熊本市中央区)
11.4 km PM2.5: 10.6 µg/m³
66
Suidōchō, Kumamoto-ken, Japan (水道町自排局熊本市中央区)
11.4 km PM2.5: 19.2 µg/m³
35
Kuwamizuhonmachi, Kumamoto Prefecture, Japan (神水本町自排局熊本市中央区)
12.6 km PM2.5: 8.4 µg/m³

What cities are near Kōshi?

50 Okino 46 Uekimachi-mōno 46 Ōzu 30 Kikuchi 51 Kumamoto 59 Kotō 55 Shimada 42 Yamaga 43 Tamana 54 Mifune
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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 2026-05-29T17:40 UTC.