Solar Flare API & CME Arrival
Know when the Sun erupts, and when it arrives.
Pxie's solar flare API reports recent X-ray flares with class and timing, and forecasts when Earth-directed eruptions are likely to arrive.
Plan: Solar flares free; CME arrival on the Builder plan.
Coverage: Anywhere on Earth, both hemispheres.
What Solar Flare API & CME Arrival gives you.
Recent solar flares
Each flare's class from minor C to major X, its start, peak and end times, and peak intensity. Strong flares can black out long-range radio on the sunlit side of Earth.
CME arrival time windows
For each coronal mass ejection (CME) likely heading for Earth, an earliest, most likely and latest arrival time, plus the expected arrival speed.
Related
M2.4 flare peaked at 14:32 UTC
Eruption arrival most likely Thursday 18:00 UTC
"When will the latest solar eruption reach Earth?"
Pxie answers with the get_cme_arrival tool. Space weather MCP server →
Solar Flare API & CME Arrival questions.
Is the solar flare API free?
Yes. Recent solar flares are on the free plan.
How accurate is the CME arrival time?
Eruptions never travel on an exact timetable, so Pxie gives an earliest, most likely and latest arrival time.
Which flares are included?
Recent X-ray flares with class, timing and peak intensity.
Track flares and eruptions in real time.
Start free, or tell us what you are building.
Developers: Solar Flare API & CME Arrival docs →