X-Ray Flux

Updates: Every 5 minutes

(last updated 20 Aug 2026 13:10 UT)

Current Flux Value Solar X-ray Flux at 20 8 2026 1304 UT: C4.0 falling (GOES 18) Previous Flux Value Solar X-ray Flux at 20 8 2026 1303 UT: C4.1 falling (GOES 18)

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