| Number of sunspots |
Size | Class Magn. | Class Spot | Location | |
|---|---|---|---|---|---|
| 2025/09/02 | 2 | 30 | CRO | N09E54 | |
| 2025/09/03 | 5 | 140 | DSO | N09E41 | |
| 2025/09/04 | 6 | 140 | DSO | N09E28 | |
| 2025/09/05 | 8 | 140 | DSI | N08E13 | |
| 2025/09/06 | 7 | 70 | DSO | N09E01 | |
| 2025/09/07 | 3 | 50 | CSO | N09W12 | |
| 2025/09/08 | 2 | 20 | CSO | N07W28 | |
| 2025/09/09 | 2 | 30 | CAO | N07W43 | |
| 2025/09/10 | 2 | 10 | BXO | N07W56 | |
| 2025/09/11 | 1 | 10 | AXX | N07W71 | |
| 2025/09/12 | 1 | 10 | AXX | N07W83 |
| C |
|---|
| 5 |
| Start | Maximum | End | ||||
|---|---|---|---|---|---|---|
| 1 | C3.3 | 2025/09/04 | 23:22 | 23:36 | 00:08 | |
| 2 | C2.9 | 2025/09/03 | 03:56 | 03:59 | 04:01 | |
| 3 | C2.8 | 2025/09/03 | 02:37 | 02:41 | 02:44 | |
| 4 | C2.7 | 2025/09/03 | 00:52 | 00:56 | 01:00 | |
| 5 | C1.6 | 2025/09/09 | 13:47 | 13:55 | 14:00 |
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| Last X-flare | 2026/03/30 | X1.5 |
| Last M-flare | 2026/04/04 | M1.0 |
| Last geomagnetic storm | 2026/04/03 | Kp7- (G3) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (3%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2026 | 85.9 +7.7 |
| April 2026 | 122.8 +36.9 |
| Last 30 days | 99.9 +42.1 |