Planetary Kp index
1.33
Quiet
As of Sep 13, 2026 8:00 AM EDT
Shack project · NOAA SWPC
Simple Space Weather
A quick amateur-radio view of the conditions that can affect propagation: the NOAA planetary Kp index plus near-real-time solar-wind speed and proton density. The page reads directly from NOAA’s current Space Weather Prediction Center feeds.
NOAA data received
Solar-wind speed
436
km/s
As of Sep 13, 2026 12:37 PM EDT
Proton density
1.1
p/cm³
Source spacecraft: SOLAR1
Data: NOAA Space Weather Prediction Center. Kp normally updates on a three-hour cadence; real-time solar-wind readings update more frequently.