Kp-index

Kp-index forecast
Min. Max.
TuesdayKp1+Kp3
WednesdayKp3Kp5+
ThursdayKp2Kp4

Real Time Solar Wind

With the current speed, it will take the solar wind 60 minutes to propagate from SOLAR-1 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
There are no sunspot regions on the earth-facing solar disc today
Today's Sun
Sunspot number 74 30
New regions1
10.7cm Solar Radio Flux137 18
Carrington Rotation2313

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 99%
M-class solar flare 55%
X-class solar flare 5%

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Space weather facts

Last X-flare2026/07/04X1.3
Last M-flare2026/07/20M3.4
Last geomagnetic storm2026/07/04Kp7+ (G3)
Spotless days
Last 365 days3 days
20263 days (1%)
Current stretch1 day
Monthly mean Sunspot Number
June 202694.4 -7.1
July 202671.1 -23.3
Last 30 days84.4 -22.8

This day in history*

Solar flares
12002X6.98
22016X1.09
32016M7.91
42016M7.18
52004M3.23
DstG
12004-99G2
21981-89G2
31974-73G3
42015-72G1
52000-67G2
*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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