Air Quality in Shimosuwa, Japan
Drizzle
23.5°C · 81.6% humidity
23.5°
Feels 23.5°
63
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations
Nearby Monitoring Stations
Shimosuwa's air quality — share it
AQI Forecast
34
6am
34
27
63
9am
51
43
38
12pm
34
32
30
3pm
28
28
27
6pm
28
28
35
9pm
54
54
54
12am
54
54
54
3am
54
54
Air Quality Index Trend
41h · 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 1.2× the WHO 24-hour guideline of 15 µg/m³.
81.6%
Humidity
19.2 km/h
Wind SSE
1002.6 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
17.8 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Shimosuwa?
Temperature & Precipitation
PM2.5 Trend
41h · 2 stationsPM2.517.8 µg/m³
×1.2 WHO
Moderate
PM1013.7 µg/m³
Good
UV INDEX9.4
Very High
Station readings (2 stations within 25 km)
17.8
Median
17.8
Average
17.8
Low
17.8
High
PM2.5 µg/m³ · Model: 7.35 · Bias: -10.4
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: 2.5°C
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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 2026-07-22T00:24 UTC.