Statistics of the Kp-value

Select year from the list

First two charts are showing maximum and average values of the official Kp-value. Data is available from January 1st 2000 onwards, and by default it shows the values of the current year. Averages are calculated from the sum of the eight consecutive 3-hours periods of each day. You can zoom to the area of interest with your mouse (or fingers, if you are using touch-screen device).

Showing time span 01.01.2025 - 20.06.2025

Next two tables are showing how many times each Kp-value (maximum and average values) has occurred in each year. As we know, the Kp can have value between 0 and 9 with steps of 0.33. Values in the tables are rounded to nearest integer, which means that for e.g. Kp 2.67, 3 and 3.33 are all counted as 3, and correspondingly 3.67, 4 and 4.33 are counted as 4 and so on.

Interpretation of the tables is quite straightforward. For example from the first table we can see that in year 2015 there were 28 days, when the highest measured official Kp-value has been 1 (and as explained earlier, this includes also values 0.67 and 1.33), and three days, when the highest measured Kp was 8 (7.67-8.33). From the second table we can see that on the same year there were 32 days, when the average Kp-value of the day was 4. In this table the values are rounded slightly differently, because averages are calculated from the average Kp-value of the whole day, and therefore doesn't follow the steps of 0.33. For example average Kp value 4 includes all values from 3.5 to 4.49.

Kp-values (max values of the day)
Year0123456789
2000116681049443211072
2001027801217433131232
2002026631148847151110
200303287110594471223
200412877971033515424
200533671100784515971
2006579899359289120
2007886908270263000
200810879110062124000
200929135120581922000
201014831288045103110
20111062110109402110210
201275110299553115510
201310661228354216210
201424511211964194000
201562867120754318530
201604972102804518000
201714999108613410210
20188871238149124100
20192841379138111100
2020694139863271000
20211701168961224110
202233072123794611100
202303284123743015430
2024323109121602511743
202506193860348420
Kp-values (averages of the day)
Year0123456789
20008911229039122200
200111105146692363110
200211871269831120000
20032337912394274300
20041497126922842210
200521107102893277000
20064715391492221000
20076114496491500000
2008631479849900000
2009119184548000000
2010691858122530000
201145166104391100000
201241146113441741000
20135816389411040000
20142515712651600000
20152690136703283000
201623123114762631000
201724149103602531000
2018451909131620000
2019481949222810000
2020572077720400000
2021371809941620000
202218113133782210000
202313118139672161000
2024141301554014101110
202522451572773000

Next tables contains basically same data as above, but shown in different format.

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

2013

2014

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025


Next diagram contains averages of monthly Ap-values starting from January 2000. Ap-value is calculated by multiplying each of the eight daily Kp-value with specific factor, summing all of the monthly Ap-values and dividing sum with number of days for the same month.