Air Quality in Katsuyama, Japan
Drizzle
23.5°C · 58.6% humidity
23.5°
Feels 23.5°
25
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Katsuyama's air quality — share it
AQI Forecast
27
9am
25
27
25
12pm
27
27
27
3pm
27
27
27
6pm
27
34
34
9pm
27
34
34
12am
54
54
54
3am
54
34
34
6am
27
25
Air Quality Index Trend
44h · 4 stnKatsuyama'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.
58.6%
Humidity
25.0 km/h
Wind NNW
1013.9 hPa
Pressure
19.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.0 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Katsuyama?
Temperature & Precipitation
PM2.5 Trend
44h · 4 stationsPM2.56.0 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX19.9
Extreme
Station readings (1 station within 25 km)
6.0
Median
6.0
Average
6.0
Low
6.0
High
PM2.5 µg/m³ · Model: 6.25 · Bias: +0.2
What is the 7-day forecast for Katsuyama?
06-09
23.5° 17.3°
0.25 mm
06-10
18.5° 14.0°
3.25 mm
06-11
24.6° 15.9°
06-12
21.5° 16.6°
1.56 mm
06-13
24.9° 17.4°
0.38 mm
06-14
23.5° 16.5°
0.13 mm
06-15
27.6° 16.6°
4.0 mm
Both models agree
Avg diff: 2.1°C
Where are air quality stations near Katsuyama?
25
Mizuotoshicho, Ono, Fukui, Japan (大野大野市)
25
Toyoshima, Fukui, Fukui, Japan (福井福井市)
23
Sadatomocho, Echizen, Fukui, Japan (今立越前市)
What cities are near Katsuyama?
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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 2026-06-09T03:51 UTC.