Air Quality in Shimosuwa, Japan
Drizzle
23.5°C · 81.6% humidity
23.5°
Feels 23.5°
65
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station
Nearby Monitoring Stations
Shimosuwa's air quality — share it
AQI Forecast
34
7am
27
27
65
10am
54
46
40
1pm
36
33
30
4pm
29
28
29
7pm
28
35
55
10pm
55
54
54
1am
54
54
54
4am
54
54
Air Quality Index Trend
45h · 2 stnShimosuwa'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 Shimosuwa is 1.3× the WHO 24-hour guideline of 15 µg/m³.
81.6%
Humidity
19.2 km/h
Wind SSE
1002.6 hPa
Pressure
24.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
18.8 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Shimosuwa?
Temperature & Precipitation
PM2.5 Trend
45h · 2 stationsPM2.518.8 µg/m³
×1.3 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX24.9
Extreme
Station readings (1 station within 25 km)
18.8
Median
18.8
Average
18.8
Low
18.8
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -12.9
What is the 7-day forecast for Shimosuwa?
07-22
27.0° 18.8°
6.5 mm
07-23
22.8° 14.8°
5.69 mm
07-24
23.9° 20.0°
5.69 mm
07-25
24.7° 17.2°
8.69 mm
07-26
29.4° 19.0°
0.44 mm
07-27
29.2° 17.8°
6.25 mm
07-28
26.1° 18.7°
5.87 mm
Both models agree
Avg diff: 2.6°C
Where are air quality stations near Shimosuwa?
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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 2026-07-22T01:21 UTC.