Solar Flare Watch2025: sunspot number and solar flux
| Month | Sunspot number | F10.7 flux |
|---|---|---|
| January | 145.2 | 189.4 |
| February | 152.6 | 184.3 |
| March | 127.7 | 163.8 |
| April | 124.1 | 162.2 |
| May | 82.6 | 135.2 |
| June | 106.8 | 131.4 |
| July | 120.8 | 137.7 |
| August | 133.7 | 156.1 |
| September | 128.6 | 153.9 |
| October | 107.1 | 139.7 |
| November | 88.6 | 141.6 |
| December | 118.3 | 160.1 |
About this page
Monthly sunspot number and 10.7 cm solar radio flux in 2025, from NOAA SWPC solar-cycle data.