Air Quality in Kōshi, Japan

Windy
30.7°C · 70.8% humidity
30.7°
Feels 37.1°
54
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
9 stations

Nearby Monitoring Stations

AQI Forecast
27 7am
27
34
54 10am
46
41
44 1pm
41
39
58 4pm
57
56
55 7pm
55
55
54 10pm
54
54
54 1am
54
54
54 4am
54
54
AD 728×90

Air Quality Index Trend

45h · 23 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.

70.8%
Humidity
45.9 km/h
Wind ESE
990.4 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
54
13.6 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Kōshi?

Temperature & Precipitation

PM2.5 Trend

45h · 23 stations
PM2.513.6 µg/m³ ✓ WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX17.4
Extreme
AD 300×250
Station readings (9 stations within 25 km)
13.6
Median
8.38
Average
2.4
Low
24.0
High
PM2.5 µg/m³ · Model: 10.0 · Bias: -3.6

What is the 7-day forecast for Kōshi?

07-22
31.6° 26.2°
0.75 mm
07-23
30.4° 20.9°
4.0 mm
07-24
31.0° 25.1°
5.13 mm
07-25
34.1° 24.6°
07-26
36.5° 24.6°
5.56 mm
07-27
32.2° 25.1°
07-28
32.3° 26.1°
6.37 mm
Both models agree Avg diff: 2.1°C

Where are air quality stations near Kōshi?

55
Nirenoki, Kumamoto, Japan (楡木熊本市北区)
5.4 km PM2.5: 14.0 µg/m³
61
Nirenoki, Kumamoto, Japan (楡木熊本市北区)
5.4 km PM2.5: 16.9 µg/m³
24
Uekimachi Iwano, Kumamoto-ken, Japan (北区役所熊本市北区)
7.6 km PM2.5: 5.8 µg/m³
30
Uekimachi Iwano, Kumamoto-ken, Japan (北区役所熊本市北区)
7.6 km PM2.5: 7.2 µg/m³
24
Waifu, Kikuchi, Kumamoto, Japan (菊池市役所菊池市)
10.1 km PM2.5: 5.8 µg/m³
65
Waifu, Kikuchi, Kumamoto, Japan (菊池市役所菊池市)
10.1 km PM2.5: 18.8 µg/m³
23
Hikimizu, Kumamoto, Japan (大津町引水菊池郡大津町)
10.1 km PM2.5: 5.5 µg/m³
47
Suidōchō, Kumamoto-ken, Japan (水道町自排局熊本市中央区)
11.4 km PM2.5: 11.3 µg/m³
10
Suidōchō, Kumamoto-ken, Japan (水道町自排局熊本市中央区)
11.4 km PM2.5: 2.4 µg/m³
25
Kuwamizuhonmachi, Kumamoto Prefecture, Japan (神水本町自排局熊本市中央区)
12.6 km PM2.5: 6.0 µg/m³

What cities are near Kōshi?

57 Okino 35 Uekimachi-mōno 42 Ōzu 36 Kikuchi 35 Kumamoto 22 Kotō 30 Shimada 11 Yamaga 31 Tamana 41 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 2026-07-22T01:12 UTC.