Space Weather

Monitor solar activity and other space-weather information that can affect radio propagation, satellites, navigation systems and Earth's upper atmosphere.

Interactive Sunspot Activity

Explore the international sunspot number using official WDC-SILSO data.

Data Range

Latest—

Visible points—

Peak in view—

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Source: WDC-SILSO, Royal Observatory of Belgium. Sunspot Number Version 2.0.

Planetary Kp Index & Forecast

Track current geomagnetic activity and NOAA SWPC's 3-hour Kp forecast. Kp ranges from 0–9; Kp 5 or greater corresponds to a NOAA geomagnetic storm level.

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Current NOAA level — —

Forecast peak — —

Kp 0–4
Below storm Kp 5
G1 Minor Kp 6
G2 Moderate Kp 7
G3 Strong Kp 8
G4 Severe Kp 9
G5 Extreme

Recent observed Kp

NOAA Kp Forecast

3-hour intervals

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Source: NOAA / NWS Space Weather Prediction Center. Forecast values may change as solar-wind conditions evolve.