Historical solar cycles

The chart on this page shows the sunspot numbers since 1749. That's when the extensive recording of solar sunspot activity began. You can zoom in on this plot by selecting a time period that you wish to view. Every dataset can be toggled on or off by clicking on the corresponding description under each graph and it can be exported as a JPG, PNG, PDF or SVG file.

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Space weather facts

Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/01/05Kp5 (G1)
Number of spotless days in 2019:10
Current stretch spotless days:11

This day in history*

Solar flares
12005X3.8
22004M5.0
32005M2.6
42012M1.0
52014C8.9
ApG
1200558G2
2199537G2
3199427G1
4200725G1
5200418
*since 1994

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