X-Ray Flux

Updates: Every 5 minutes

(last updated 06 Sep 2026 00:04 UT)

Current Flux Value Solar X-ray Flux at 5 9 2026 2357 UT: B4.5 steady (GOES 18) Previous Flux Value Solar X-ray Flux at 5 9 2026 2356 UT: B4.5 falling (GOES 18)

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