Air Quality in Saku, Japan

Drizzle
19.2°C · 96.8% humidity
19.2°
Feels 19.2°
63
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
1 station

Nearby Monitoring Stations

AQI Forecast
34 6am
27
27
63 9am
51
43
38 12pm
34
32
30 3pm
28
28
29 6pm
28
35
55 9pm
54
54
54 12am
54
54
54 3am
54
54
AD 728×90

Air Quality Index Trend

46h · 3 stn

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. Current PM2.5 concentration in Saku is 1.2× the WHO 24-hour guideline of 15 µg/m³.

96.8%
Humidity
22.9 km/h
Wind ESE
1004.0 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
63
17.8 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Saku?

Temperature & Precipitation

PM2.5 Trend

46h · 3 stations
PM2.517.8 µg/m³ ×1.2 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX9.4
Very High
AD 300×250
Station readings (1 station within 25 km)
17.8
Median
17.8
Average
17.8
Low
17.8
High
PM2.5 µg/m³ · Model: 10.0 · Bias: -7.8

What is the 7-day forecast for Saku?

07-22
24.7° 17.9°
6.5 mm
07-23
21.4° 15.2°
2.5 mm
07-24
21.8° 18.2°
3.44 mm
07-25
26.1° 17.3°
8.19 mm
07-26
28.0° 16.9°
0.31 mm
07-27
26.2° 18.8°
2.0 mm
07-28
24.8° 19.2°
2.0 mm
Both models agree Avg diff: 3.7°C

Where are air quality stations near Saku?

61
Atobe, Saku, Nagano, Japan (佐久佐久市)
2.4 km PM2.5: 16.9 µg/m³
30
倉敷市/庄, Japan (庄倉敷市)
20.7 km PM2.5: 7.2 µg/m³

What cities are near Saku?

61 Komoro 59 Miyota 61 Tōmi 59 Karuizawa 63 Kamimaruko 66 Ueda 57 Tomioka 63 Chino 75 Sakaki 63 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 2026-07-22T00:21 UTC.