Live Solar Data
Kp Index—
F10.7 Flux—
R Scale—
G Scale—
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SPACE WEATHER
Solar & Propagation
Live NOAA space-weather measurements with practical amateur-radio estimates.
Estimated HF Conditions
These ratings are a simple estimate from Kp and F10.7 flux. Time of day, season, path, antenna, local noise and solar events also matter.
How to Read It
Kp 0–2Quiet
Kp 3–4Unsettled
Kp 5+Storm
Higher solar flux often helps the upper HF bands. Higher Kp generally makes polar and higher-latitude paths less reliable.