Solar and geomagnetic data

Date Solar flux density
2.8 GHz		 Sunspot number Planetary A index
(3)		 K indices
(3-hour intervals) (3)		 Solar wind
speed range
(km/s)
(SOHO)(2)		 Number
of flares
DRAO (4) Almaty (1)
(daily avg)		 STAR
(SDO) (6)		 NOAA
(5)		 STAR
ap avg		 Pots-
dam
WDC		 Daily
ap range		 Planetary
(WDC)		 Boulder
(5)		 Andenes
(Tromsų)		 C M X
Measured
(20h UT)		 (02-11 UT) 2K 1K
  1AU
20250630 128.2     299 196 158 10.8 11 6-15 22232333 33242332 43332445 437-524 10    
20250629 128.3     331 234 151 6.8 7 5-9 21222222 22232322 34234445 450-601 2    
20250628 121.8     294 210 103 8.3 8 5-18 22322122 23422322 43343234 594-716 2    
20250627 118.3     304 209 111 20.0 20 7-48 54433223 54433322 65433445 604-816 3    
20250626 117.3     273 151 91 29.0 29 18-56 43434445 42434444 64435554 586-888 5    
20250625 116.9     254 161 90 13.6 14 3-32 11113344 22223434 31113355 382-633 4    
20250624 119.9     197 131 87 7.0 7 4-12 12222321 12332322 12214232 378-485 12    
20250623 121.8     223 147 103 5.8 6 4-12 31122211 31132321 51112232 385-559 21    
20250622 124.8     219 146 80 9.4 9 6-18 32222222 33123222 53233435 448-590 9    
20250621 120.3     179 114 87 9.8 10 5-18 23113313 23113323 24125543 441-622 1    
20250620 129.7     162 117 95 8.6 9 3-15 12322321 13323321 44324432 465-649 6 2  
20250619 136.2 167.5 172.9 246 184 113 10.3 10 4-32 22111243 32213243 53201354 437-614 30   1
20250618 137.0 166.9 172.2 244 186 120 12.5 12 7-18 32233233 32333334 53233444 454-601 46    
20250617 139.2 172.7 178.2 284 194 97 7.5 8 5-9 22212222 21323324 23224353 454-586 28 2 1
20250616 147.9 181.0 186.7 259 135 125 9.4 9 6-22 23422222 22412333 33433343 389-573 28 4  
20250615 160.5 176.0 181.5 265 194 141 8.5 8 5-15 21222332 21233322 42333433 426-607 35 4  
20250614 150.8 168.7 174.0 285 203 136 22.0 22 12-56 55333333 44342333 65334345 406-594 28 2  
20250613 143.0 158.8 163.8 249 163 134 68.8 69 39-111 75556566 55565445 67754546 375-491 22 1  
20250612 141.5 163.9 168.9 257 176 116 31.5 32 12-56 54434355 45543343 55544454 382-476 21    
20250611 141.8 157.0 161.8 333 228 133 17.8 18 5-39 33112445 33222453 54123546 398-486 34    
20250610 129.6 154.0 158.7 258 156 105 7.6 8 5-12 31222223 32332333 52222334 379-461 12    
20250609 120.3 145.1 149.5 300 176 84 14.4 14 9-27 44322323 45322322 55323345 424-563 4    
20250608 115.0 144.3 148.7 263 129 87 13.9 14 6-22 22223434 22223434 32334535 405-477 7    
20250607 120.9 154.0 158.6 234 97 103 18.0 18 7-32 22342344 23442333 43442366 371-479 10    
20250606 124.5 156.3 160.9 257 169 76 6.6 7 5-9 21222221 23322332 42333133 371-544 22    
20250605 127.8 161.0 165.7 234 161 92 12.4 12 6-22 42233332 32343332 54234324 503-692 22    
20250604 130.6 157.3 161.8 203 153 92 26.6 27 4-56 13345543 14445533 25555565 555-816 9 1  
20250603 134.8 164.2 168.9 201 126 95 59.9 60 9-132 67666522 56644*32 68755533 548-694 13 1  
20250602 139.9 176.0 181.1 220 143 103 68.6 69 39-132 55676556 45564454 65566666 588-1012 13 2  
20250601 150.3 192.1 197.5 199 127 97 97.9 98 22-179 56877574 56765563 68887455 662-1129 20    
Average 131.3     250.9 163.9 106.8 21.43 21.5
International sunspot number (SILSO-WDC): 116.3
K factor       0.46 0.71 1.09  

1) Calculated based on data obtained courtesy of the Institute of Ionosphere, Kazakhstan
 2) Solar wind speed is preliminary (* on days with no or too few measurements from SOHO-CELIAS/MTOF PM, measurements from DSCOVR or ACE are used)
3) Ap and Kp values in red are based on the definitive Potsdam WDC data.
4) Flare enhanced measurements and measurements that most likely are invalid are replaced by other same day measurements ## (daily QC). Solar flux measurements that may be invalid are temporarily marked **, while interpolated values are marked # .
5) Suspected faulty measurement or incomplete observation.
6) Sunspot count temporarily using other data sources than SDO.

This page is normally updated once a day by Jan Alvestad.

[Solar Terrestrial Activity Report]