GreenHalos
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A clearer view of the northern lights

Read the sky without losing the uncertainty.

GreenHalos brings the verified current auroral oval, local darkness and weather context into one calm view, with source age and uncertainty kept visible.

Northern hemisphere aurora summary A schematic Northern polar view. Text beside the diagram provides the complete information.

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Northern hemisphere aurora conditions

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    Keys: arrows rotate · +/− zoom · H reset · N/S hemisphere · A aurora · C clouds · D day/night · B borders · F forecast · L data

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    Monitored regions

    Current aurora conditions

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    1. Verified NOAA nowcastLoading

    No regional ranking is shown until verified data passes integrity and freshness checks.

    Local aurora outlook

    Local outlook

    Check local aurora conditions

    Your location is used in this browser to calculate local darkness and select nearby forecast data. GreenHalos does not create an account or retain precise coordinates on its server.

    A curated global north/south catalogue. No external geocoder is contacted.

    Live activity from NOAA SWPC with selected-location cloud context from MET Norway.

    Aurora24

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    Current Kp—

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    Solar speed—

    IMF Bz—

    OVATION freshnessLoading

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    Observed · Forecast

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    Auroral activity legend: Low to High
    Forecast table and sources
    Planetary Kp context Observed and forecast three-hour periods · global, not local probability
    Planetary Kp activity chart Observed and forecast three-hour periods · global, not local probability
    Planetary Kp chart data
    PeriodStateKp
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    PeriodActivityConfidence
    Current outlookLoading—

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    Official NOAA SWPC aurora forecast

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    Current aurora data in text

    Verified first-party data is loading. If it cannot be verified, no aurora activity or local visibility value is shown.

      A clearer view of the northern lights

      Read the sky without losing the uncertainty.

      GreenHalos brings the verified current auroral oval, local darkness and weather context into one calm view, with source age and uncertainty kept visible.

      Current layerVerified NOAA nowcast

      Local outlookActivity · darkness · MET cloud

      Days 4–10Low confidence

      Data transparency: source timestamps, freshness and missing inputs remain explicit. GreenHalos is independent and is not an official warning service.