Sunspots and active regions
The following active regions with sunspot groups were visible on the Sun on August 21, 2025. 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) | |
|---|---|---|---|---|---|---|---|---|
| № 4191 | N10 | E80 | 01 | 0080 | Alpha | Aug 28, 2025 | Sep 4, 2025 | Sep 17, 2025 |
| № 4190 | N18 | E57 | 01 | 0010 | Alpha | Aug 26, 2025 | Sep 2, 2025 | Sep 16, 2025 |
| № 4189 | N08 | E33 | 02 | 0010 | Beta | Aug 24, 2025 | Aug 31, 2025 | Sep 14, 2025 |
| № 4188 | S09 | E44 | 01 | 0040 | Alpha | Aug 25, 2025 | Sep 1, 2025 | Sep 15, 2025 |
| № 4187 | S18 | W07 | 04 | 0040 | Beta | Aug 21, 2025 | Aug 28, 2025 | Sep 11, 2025 |
Solar cycle progression
The average monthly sunspot number (SSN) from January 1996 to August 2025. The gray background is the average SSN index.
