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    ECMWF, GFS, ICON, GEM
    New: Official Warnings from National Meteorological Institutes Warning

    Saku

    World / Japan / 長野県 (Nagano-ken)

    36°14'N / 138°28'E / Altitude 685 m / 01:39 2026/05/04, Asia/Tokyo (UTC+9)

    Open Radar Map

    Weather for the next 24 hours

    02:0003:0004:0005:0006:0007:0008:0009:0010:0011:0012:0013:0014:0015:0016:0017:0018:0019:0020:0021:0022:0023:0000:00 tomorrow01:00 tomorrow02:00 tomorrow
    overcast with heavy rain
    11 °C
    3 mm
    100 %
    E
    3 km/h
    overcast with rain
    11 °C
    2 mm
    100 %
    E
    3 km/h
    overcast with rain
    11 °C
    1 mm
    100 %
    NE
    4 km/h
    overcast with rain
    11 °C
    0.6 mm
    100 %
    N
    3 km/h
    overcast with rain
    12 °C
    0.9 mm
    100 %
    NW
    6 km/h
    overcast with light rain
    15 °C
    0.1 mm
    100 %
    NW
    7 km/h
    mostly cloudy
    18 °C
    0.1 mm
    60 %
    W
    15 km/h
    clear sky with few clouds
    19 °C
    0 mm
    10 %
    W
    21 km/h
    Gust:
    50 km/h
    clear sky with few clouds
    20 °C
    0 mm
    0 %
    W
    24 km/h
    Gust:
    58 km/h
    clear sky with few clouds
    20 °C
    0 mm
    0 %
    W
    25 km/h
    Gust:
    61 km/h
    clear sky with few clouds
    21 °C
    0 mm
    0 %
    W
    26 km/h
    Gust:
    65 km/h
    mostly cloudy
    20 °C
    0 mm
    0 %
    W
    27 km/h
    Gust:
    68 km/h
    partly cloudy
    18 °C
    0 mm
    0 %
    W
    27 km/h
    Gust:
    68 km/h
    partly cloudy
    17 °C
    0 mm
    0 %
    W
    29 km/h
    Gust:
    72 km/h
    high clouds
    15 °C
    0 mm
    0 %
    W
    29 km/h
    Gust:
    76 km/h
    high clouds
    13 °C
    0 mm
    0 %
    W
    27 km/h
    Gust:
    72 km/h
    high clouds
    12 °C
    0 mm
    0 %
    W
    21 km/h
    Gust:
    65 km/h
    high clouds
    10 °C
    0 mm
    0 %
    NW
    15 km/h
    Gust:
    50 km/h
    partly cloudy
    9 °C
    0 mm
    0 %
    NW
    13 km/h
    partly cloudy
    8 °C
    0 mm
    0 %
    NW
    10 km/h
    partly cloudy
    8 °C
    0 mm
    0 %
    NW
    9 km/h
    partly cloudy
    7 °C
    0 mm
    0 %
    NW
    8 km/h
    mostly cloudy
    6 °C
    0 mm
    0 %
    W
    5 km/h
    high clouds
    5 °C
    0 mm
    0 %
    W
    7 km/h
    partly cloudy
    4 °C
    0 mm
    0 %
    W
    7 km/h

    Forecast

    00:0003:0006:0009:0012:0015:0018:0021:00
    mostly cloudy
    6 °C
    0 mm
    0 %
    W
    5 km/h
    clear sky
    3 °C
    0 mm
    0 %
    W
    5 km/h
    high clouds
    3 °C
    0 mm
    0 %
    W
    5 km/h
    clear sky
    12 °C
    0 mm
    0 %
    NW
    6 km/h
    clear sky
    17 °C
    0 mm
    0 %
    N
    7 km/h
    clear sky
    18 °C
    0 mm
    0 %
    E
    13 km/h
    clear sky
    14 °C
    0 mm
    0 %
    E
    9 km/h
    high clouds
    8 °C
    0 mm
    0 %
    E
    5 km/h

    Meteogram

    83571058769111111112118182518181020191817192020
    30
    25
    20
    15
    10
    5
    0
    Mon
    04
    overcast with light rain
    Tue
    05
    clear sky
    Wed
    06
    mostly cloudy
    Thu
    07
    clear sky with few clouds
    Fri
    08
    overcast
    Sat
    09
    overcast
    Sun
    10
    overcast with rain
    Mon
    11
    clear sky with few clouds
    Tue
    12
    clear sky with few clouds
    Wed
    13
    mixed with rain showers
    Thu
    14
    mixed with rain showers
    Fri
    15
    mixed with rain showers
    Sat
    16
    mixed with rain showers
    Sun
    17
    overcast

    Air quality (AQI)


    Air quality index (marked as AQI) is developed by Environmental Protection Agency. Values over 300 represents hazardous air quality, between 200-300 very unhealthy, 150-200 unhealthy, 100-150 unhealthy for sensitive groups and below 100 or rather below 50 the air quality is good.

    Sun and Moon

    Heading: Time:
    Phase: Altitude:


    Heading: Time:
    Illumination: Altitude:


    Date rise set rise Illumination


    Phase Time Length