Air Quality in Shiojiri, Japan
Rain
15.2°C · 99.7% humidity
15.2°
Feels 15.2°
19
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
Shiojiri's air quality — share it
AQI Forecast
24
4pm
24
24
19
7pm
20
22
22
10pm
23
23
23
1am
24
24
24
4am
24
24
24
7am
24
24
24
10am
24
24
24
1pm
24
24
Air Quality Index Trend
42h · 3 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.
99.7%
Humidity
13.3 km/h
Wind ENE
1012.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
4.59 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Shiojiri?
Temperature & Precipitation
PM2.5 Trend
42h · 3 stationsPM2.54.59 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (3 stations within 25 km)
4.59
Median
5.03
Average
4.1
Low
6.0
High
PM2.5 µg/m³ · Model: 5.9 · Bias: +1.3
What is the 7-day forecast for Shiojiri?
09-05
21.6° 15.2°
5.94 mm
09-06
22.1° 13.6°
3.25 mm
09-07
24.3° 15.2°
3.44 mm
09-08
20.9° 13.6°
3.56 mm
09-09
19.4° 14.4°
1.63 mm
09-10
21.9° 15.0°
4.5 mm
09-11
20.8° 14.9°
4.06 mm
Both models agree
Avg diff: 4.0°C
Where are air quality stations near Shiojiri?
17
Shinmeicho, Okaya, Nagano, Japan (岡谷インターチェンジ岡谷市)
21
Kamigawa, Suwa, Nagano, Japan (諏訪諏訪市)
25
Nagisa, Matsumoto, Nagano, Japan (松本渚交差点松本市)
What cities are 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 2026-09-05T10:27 UTC.