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.

Current data suggest that it is not possible to see aurora now at middle latitudes
Active geomagnetic conditions expected
The solar wind speed is currently moderately high (687.7 km/sec.)

Latest news

Today's space weather

Auroral activity Minor Severe
High latitude 25% 65%
Middle latitude 25% 1%
Predicted Kp max 5
Solar activity
M-class solar flare 1%
X-class solar flare 1%
Moon phase
Waning Crescent

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16%

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Space weather facts

Last X-flare:2015/05/05X2.7
Last M-flare:2017/04/03M5.8
Last geomagnetic storm:2017/04/23Kp6 (G2)
Number of spotless days in 2017:30
Last spotless day:2017/04/17

This day in history*

Solar flares
12003M3.3
22001M3.1
32001M2.3
42001M2.1
52001M1.8
ApG
1201241G3
2199835G2
3200327G1
4199526G1
5201324G1
*since 1994