Air Quality in Katsuyama, Japan
Drizzle
15.5°C · 99.2% humidity
15.5°
Feels 15.5°
28
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Katsuyama's air quality — share it
AQI Forecast
54
8pm
54
34
28
11pm
30
51
52
2am
52
53
53
5am
33
27
34
8am
27
27
27
11am
27
27
27
2pm
27
27
27
5pm
34
34
Air Quality Index Trend
47h · 1 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. Current PM2.5 concentration in Katsuyama is 1.4× the WHO annual guideline of 5 µg/m³.
99.2%
Humidity
13.7 km/h
Wind SW
1008.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.75 µg/m³
PM10
27.4 µg/m³
050100150200300500
What is the weather forecast for Katsuyama?
Temperature & Precipitation
PM2.5 Trend
47h · 1 stationPM2.56.75 µg/m³
✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
Station readings (2 stations within 25 km)
6.75
Median
6.75
Average
4.1
Low
9.4
High
PM2.5 µg/m³ · Model: 8.2 · Bias: +1.5
What is the 7-day forecast for Katsuyama?
05-29
21.9° 15.2°
57.13 mm
05-30
23.5° 14.3°
7.13 mm
05-31
23.0° 16.8°
06-01
23.9° 16.3°
06-02
23.5° 15.1°
0.38 mm
06-03
23.6° 16.5°
3.25 mm
06-04
23.7° 12.0°
0.62 mm
Both models agree
Avg diff: 2.6°C
Where are air quality stations near Katsuyama?
43
Mizuotoshicho, Ono, Fukui, Japan (大野大野市)
17
Toyoshima, Fukui, Fukui, Japan (福井福井市)
40
Sadatomocho, Echizen, Fukui, Japan (今立越前市)
What cities are near Katsuyama?
Get AQI alerts for Katsuyama
Notify me when air quality reaches:
Free · No account · Unsubscribe any time
Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T14:38 UTC.