The aurora and solar activity archive
Searching for historical solar and auroral activity data? The archive is filled with data between the year 1996 and yesterday. You can choose a viewing mode to quickly look for days with interesting space weather and pick a day to view the archived data for that day with more detailed space weather data.
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1Kp2+ | 2Kp2- | 3Kp3 | 4Kp3 | 5Kp2- | ||
6Kp4- | 7Kp2 | 8B4.87 Kp3- | 9Kp1+ | 10Kp3 | 11Kp3- | 12Kp3 |
13Kp2- | 14Kp1+ | 15Kp4- | 16Kp3 | 17Kp3- | 18Kp2- | 19Kp2+ |
20Kp5- | 21Kp4 | 22Kp4 | 23Kp2 | 24Kp3- | 25B2.82 Kp2 | 26B2.68 Kp3- |
27B4.43 Kp2- | 28Kp2+ | |||||
Latest news
Sunday, 1 February 2026
Complex sunspot region 4366
Monday, 19 January 2026
CME impact! S4 solar radiation storm
Sunday, 18 January 2026
X1.9 solar flare with earth-directed CME
Latest forum messages
Feb 8-9 CMEs 12AR4366 976AR 4371 19AR 4373 3Do the high-resolution sunspot counts point to more complex sunspots? 50
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Space weather facts
| Last X-flare | 2026/02/04 | X4.3 |
| Last M-flare | 2026/02/05 | M1.1 |
| Last geomagnetic storm | 2026/02/05 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| January 2026 | 112.6 -11.4 |
| February 2026 | 139.3 +26.7 |
| Last 30 days | 125.9 +20.7 |