Air Quality in Shiojiri, Japan
Drizzle
15.9°C · 61.0% humidity
15.9°
Feels 15.9°
28
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Shiojiri's air quality — share it
AQI Forecast
34
6am
27
25
28
9am
25
25
25
12pm
25
25
25
3pm
25
25
25
6pm
25
27
27
9pm
27
34
34
12am
34
54
54
3am
54
54
Air Quality Index Trend
31h · 5 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.
61.0%
Humidity
21.8 km/h
Wind SE
1015.3 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
6.67 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Shiojiri?
Temperature & Precipitation
PM2.5 Trend
31h · 5 stationsPM2.56.67 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX17.4
Extreme
Station readings (2 stations within 25 km)
6.67
Median
7.55
Average
6.0
Low
9.1
High
PM2.5 µg/m³ · Model: 6.25 · Bias: -0.4
What is the 7-day forecast for Shiojiri?
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
06-05
21.1° 9.8°
0.25 mm
Both models agree
Avg diff: 4.0°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 2026-05-30T00:39 UTC.