X-Ray Flux

Updates: Every 5 minutes

(last updated 20 Apr 2026 13:09 UT)

Current Flux Value Solar X-ray Flux at 20 4 2026 1303 UT: B3.4 rising (GOES 18) Previous Flux Value Solar X-ray Flux at 20 4 2026 1302 UT: B3.3 steady (GOES 18)

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