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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1Kp3 | 2Kp1 | 3Kp1+ | 4Kp1+ | 5Kp1- | ||
6Kp4- | 7B3.01 Kp4+ | 8Kp2- | 9Kp3- | 10Kp5- | 11B4.93 Kp4- | 12Kp2- |
13Kp1 | 14B5.26 Kp2 | 15B2.24 Kp3 | 16Kp2+ | 17Kp2- | 18Kp6- | 19B3.27 Kp6+ |
20C1.02 Kp4+ | 21C3.69 Kp4 | 22B6.63 Kp3+ | 23B7.42 Kp2 | 24B1.48 Kp2+ | 25B1.6 Kp3- | 26Kp3+ |
27B2.2 Kp3+ | 28C1.06 Kp3+ | 29B3.59 Kp2+ | 30C1.29 Kp2 | 31B3.3 Kp2 | ||
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
AR4366 605X1.9 CME 1357New satellites - Proba-3, PUNCH, SWFO-L1, GOES-U/19 70Do the high-resolution sunspot counts point to more complex sunspots? 45Anomalous sunspots on the sun ? 5
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Space weather facts
| Last X-flare | 2026/02/02 | X1.6 |
| Last M-flare | 2026/02/02 | M2.5 |
| Last geomagnetic storm | 2026/01/28 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| December 2025 | 124 +32.2 |
| February 2026 | 97 -27 |
| Last 30 days | 117.7 +5.8 |