Air Quality in Shimosuwa, Japan

Heavy Rain
16.4°C · 81.2% humidity
16.4°
Feels 16.4°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast
24 6am
24
24
30 9am
28
30
56 12pm
56
55
55 3pm
55
54
34 6pm
34
34
34 9pm
27
27
27 12am
27
27
27 3am
27
34
AD 728×90

Air Quality Index Trend

41h · 2 stn

Shimosuwa'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 1.4× the WHO annual guideline of 5 µg/m³.

81.2%
Humidity
32.3 km/h
Wind SSE
998.9 hPa
Pressure
14.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
30
7.2 µg/m³
PM10▲
31
34.3 µg/m³
050100150200300500

What is the weather forecast for Shimosuwa?

Temperature & Precipitation

PM2.5 Trend

41h · 2 stations
PM2.57.2 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX14.9
Extreme
AD 300×250
Station readings (1 station within 25 km)
7.2
Median
7.2
Average
7.2
Low
7.2
High
PM2.5 µg/m³ · Model: 9.65 · Bias: +2.5

What is the 7-day forecast for Shimosuwa?

05-29
19.4° 13.2°
45.12 mm
05-30
21.7° 12.9°
2.69 mm
05-31
23.7° 13.8°
0.06 mm
06-01
21.6° 13.8°
06-02
24.3° 12.1°
0.56 mm
06-03
24.8° 14.1°
2.31 mm
06-04
21.0° 8.3°
1.44 mm
Both models agree Avg diff: 2.6°C

Where are air quality stations near Shimosuwa?

25
Kamigawa, Suwa, Nagano, Japan (諏訪諏訪市)
4.7 km PM2.5: 6.0 µg/m³
12
倉敷市/庄, Japan (庄倉敷市)
21.4 km PM2.5: 2.9 µg/m³

What cities are near Shimosuwa?

30 Okaya 30 Suwa 30 Chino 23 Shiojiri 24 Tatsuno 25 Matsumoto 26 Kinoshita 26 Minamiminowa 27 Ina 25 Azumino
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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 2026-05-29T00:24 UTC.