Air Quality in Kōshū, Japan

Overcast
16.7°C · 96.1% humidity
16.7°
Feels 16.7°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast

Nearby Monitoring Stations

AQI Forecast
25 8am
25
25
25 11am
27
27
27 2pm
27
27
27 5pm
27
34
54 8pm
54
25
25 11pm
25
24
24 2am
25
25
25 5am
25
25
AD 728×90

Air Quality Index Trend

44h · 19 stn

Kōshū'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.

96.1%
Humidity
29.8 km/h
Wind NNE
1011.7 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
25
5.9 µg/m³
PM10
13
13.7 µg/m³
050100150200300500

What is the weather forecast for Kōshū?

Temperature & Precipitation

PM2.5 Trend

44h · 19 stations
PM2.55.9 µg/m³ ✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250

What is the 7-day forecast for Kōshū?

08-03
22.9° 16.7°
13.56 mm
08-04
26.9° 18.6°
1.31 mm
08-05
24.3° 19.4°
23.88 mm
08-06
23.6° 19.1°
60.25 mm
08-07
26.1° 18.9°
21.19 mm
08-08
29.1° 18.6°
52.56 mm
08-09
25.4° 16.5°
2.75 mm
Both models agree Avg diff: 2.7°C

Where are air quality stations near Kōshū?

21
Enzankamishiogo, Koshu, Yamanashi, Japan (東山梨甲州市)
5.7 km PM2.5: 5.0 µg/m³
42
Enzankamishiogo, Koshu, Yamanashi, Japan (東山梨甲州市)
5.7 km PM2.5: 10.1 µg/m³
17
Otsukimachi Hanasaki, Otsuki, Yamanashi, Japan (大月大月市)
19.6 km PM2.5: 4.1 µg/m³
17
Otsukimachi Hanasaki, Otsuki, Yamanashi, Japan (大月大月市)
19.6 km PM2.5: 4.1 µg/m³
30
Kokubo, Kofu, Yamanashi, Japan (国母自排甲府市)
21.6 km PM2.5: 7.2 µg/m³

What cities are near Kōshū?

25 Enzan 25 Yamanashi 25 Isawa 25 Fuefuki 25 Kofu 25 Ōtsuki 25 Tsuru 25 Shōwa 25 Kai 25 Ryūō
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T02:00 UTC.