Air Quality in Shiojiri, Japan
Heavy Rain
13.8°C · 86.1% humidity
13.8°
Feels 13.8°
23
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Shiojiri's air quality — share it
AQI Forecast
24
6am
24
24
23
9am
24
27
54
12pm
54
54
54
3pm
54
54
34
6pm
34
34
34
9pm
27
27
27
12am
27
27
27
3am
27
34
Air Quality Index Trend
41h · 2 stnShiojiri'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 Shiojiri is 1.1× the WHO annual guideline of 5 µg/m³.
86.1%
Humidity
23.1 km/h
Wind SE
999.6 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
5.61 µg/m³
PM10▲
34.3 µg/m³
050100150200300500
What is the weather forecast for Shiojiri?
Temperature & Precipitation
PM2.5 Trend
41h · 2 stationsPM2.55.61 µg/m³
✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX14.9
Extreme
What is the 7-day forecast for Shiojiri?
05-29
15.5° 10.5°
60.5 mm
05-30
17.1° 10.1°
7.63 mm
05-31
18.2° 9.3°
0.19 mm
06-01
17.7° 11.0°
0.5 mm
06-02
18.5° 9.1°
1.31 mm
06-03
18.3° 10.7°
2.38 mm
06-04
16.9° 4.4°
1.37 mm
Both models agree
Avg diff: 4.2°C
Where are air quality stations near Shiojiri?
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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 2026-05-29T00:17 UTC.