What is the air quality in Saku today?

The current Air Quality Index (AQI) in Saku is 25 (Good). PM2.5 concentration is 6.03 µg/m³.

What is the temperature in Saku right now?

The current temperature in Saku is 17.0°C (feels like 17.0°C). Humidity is 99.1% and wind speed is 21.1 km/h.

Is it safe to go outside in Saku?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.7 (Low).

Air Quality in Saku, Japan

Drizzle

17.0°C · 99.1% humidity

17.0°

Feels 17.0°

Good

Air quality is satisfactory. Enjoy outdoor activities.

2 stations

Nearby Monitoring Stations

AQI Forecast

24 4pm

25 7pm

24 10pm

24 1am

24 4am

24 7am

25 10am

25 1pm

Air Quality Index Trend

42h · 3 stn

View full history →

Saku'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.

99.1%

Humidity

21.1 km/h

Wind E

1011.6 hPa

Pressure

0.7

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

6.03 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Saku?

Temperature & Precipitation

PM2.5 Trend

42h · 3 stations

PM2.56.03 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.7

Low

Station readings (2 stations within 25 km)

6.03

Median

7.1

Average

6.0

Low

8.2

High

PM2.5 µg/m³ · Model: 5.9 · Bias: -0.1

What is the 7-day forecast for Saku?

09-05

20.2° 17.0°

7.0 mm

09-06

24.8° 15.7°

2.38 mm

09-07

22.7° 18.0°

2.25 mm

09-08

23.3° 16.2°

13.13 mm

09-09

21.4° 17.0°

1.19 mm

09-10

20.0° 18.2°

6.06 mm

09-11

25.9° 16.9°

1.06 mm

Both models agree Avg diff: 2.4°C

Where are air quality stations near Saku?

Atobe, Saku, Nagano, Japan (佐久佐久市)

2.4 km PM2.5: 6.0 µg/m³

倉敷市/庄, Japan (庄倉敷市)

20.7 km PM2.5: 8.2 µg/m³

What cities are near Saku?

27 Komoro 25 Miyota 29 Tōmi 25 Karuizawa 31 Kamimaruko 29 Ueda 8 Tomioka 21 Chino 25 Sakaki 21 Suwa

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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 2026-09-05T10:26 UTC.