Kp-index

Kp-index forecast
Min. Max.
TuesdayKp2+Kp4
WednesdayKp2Kp3-
ThursdayKp1+Kp2-

Real Time Solar Wind

With the current speed, it will take the solar wind 60 minutes to propagate from ACE to Earth.
Solar wind
Speed: km/sec
Density: p/cm3
Interplanetary Magnetic Field
Bt: nT
Bz: nT

Sunspot regions

Solar Dynamics Observatory HMI Continuum
Sunspot regions
RegionNumber of
sunspots
Class
Magn.
Class
Spot
44151HSX
441914EHO
44206DRO
44213CAO
Today's Sun
Sunspot number 46 11
New regions0
10.7cm Solar Radio Flux105
Carrington Rotation2310

Solar flares

SDO AIA 131
Solar activity past two hours
Current value
2h max
24h max
More data Help
Flare probability
C-class solar flare 75%
M-class solar flare 10%
X-class solar flare 1%

Latest news

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Space weather facts

Last X-flare2026/03/30X1.5
Last M-flare2026/04/09M1.0
Last geomagnetic storm2026/04/20Kp5 (G1)
Spotless days
Last 365 days3 days
20263 days (3%)
Last spotless day2026/02/24
Monthly mean Sunspot Number
March 202685.9 +7.7
April 202679.3 -6.7
Last 30 days92.4 +29.5

This day in history*

Solar flares
12002X2.2
22022M9.7
32015M5.78
42003M4.14
52024M3.43
DstG
11985-158G4
21970-141G4
31997-107G1
41981-94G1
51971-77G2
*since 1994

Aurora on this day in history

No observations submitted for this day in history. If you've observed the aurora and you have some amazing photos to show off, submit your observations now!
Submit your aurora observation

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