X-Ray Flux

Updates: Every 5 minutes

(last updated 13 Apr 2026 12:38 UT)

Current Flux Value Solar X-ray Flux at 13 4 2026 1233 UT: B3.7 steady (GOES 18) Previous Flux Value Solar X-ray Flux at 13 4 2026 1232 UT: B3.7 falling (GOES 18)

X-Ray flux data are provided by the US Space Weather Prediction Center in Boulder.