Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on April 28, 2026. Coordinates are given as of the end of the day.
| Group ID | Location | Number of sunspots | Area (msh) | Type | CM Passage | Disappearance (W90) | Reappearance (W270) | |
|---|---|---|---|---|---|---|---|---|
| № 4427 | S31 | E42 | 01 | 0010 | Alpha | May 2, 2026 | May 9, 2026 | May 23, 2026 |
| № 4425 | N05 | E38 | 19 | 0300 | Beta-Gamma-Delta | May 2, 2026 | May 8, 2026 | May 22, 2026 |
| № 4424 | N16 | E08 | 12 | 0130 | Beta | Apr 29, 2026 | May 6, 2026 | May 20, 2026 |
| № 4423 | S05 | W08 | 04 | 0020 | Beta | Apr 28, 2026 | May 5, 2026 | May 19, 2026 |
| № 4421 | S12 | W15 | 02 | 0020 | Alpha | Apr 28, 2026 | May 5, 2026 | May 18, 2026 |
| № 4420 | N16 | W27 | 24 | 0360 | Beta-Gamma-Delta | Apr 27, 2026 | May 4, 2026 | May 17, 2026 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1997 to April 2026. The gray background is the average SSN index.
