International Association of Geomagnetism and Aeronomy

(International Service of Geomagnetic Indices)

Nowcast data for May 2025

(Last update: 23:56:32 UTC, June 1, 2025)

Geomagnetic Planetary Indices

Kp three-hourly daily

1 2 3 4 5 6 7 8 Sum Ap Cp

1 3+ 4o 4- 4o 4o 3+ 5- 5- 32- 27 1.2

2 5o 5o 4o 4+ 5- 5- 4- 5o 36+ 38 1.4

3 5+ 4o 4o 5- 3+ 3o 3- 4- 31- 27 1.2

4 4o 3+ 5- 2+ 4- 4+ 4o 4o 30+ 25 1.2

5 3+ 5- 4+ 4+ 4o 4+ 4o 4o 33o 29 1.3

6 3+ 2+ 2+ 3- 2+ 2+ 3+ 4- 22+ 13 0.8

7 2+ 3- 2+ 2o 2- 1- 1o 2o 15- 7 0.4

8 2+ 3o 3o 2- 2o 2o 1- 4o 19- 11 0.6

9 3- 2o 1+ 2- 2+ 3+ 4o 4+ 22- 14 0.8

10 5- 4- 2- 2o 2- 1o 1+ 2o 18o 12 0.7

11 2+ 3o 2o 2- 3o 1+ 4+ 4o 22- 14 0.8

12 2o 2- 1o 1+ 2o 1- 1o 2o⁽¹²⁾ 12- 5 0.2

13 1+⁽¹¹⁾ 2-⁽¹¹⁾ 1+⁽¹¹⁾ 1+⁽¹¹⁾ 1+⁽¹¹⁾ 3-⁽¹¹⁾ 3+⁽¹¹⁾ 3+⁽¹¹⁾ 16+ 9 0.5

14 4- 2+⁽¹²⁾ 2o⁽¹²⁾ 3-⁽¹²⁾ 4-⁽¹²⁾ 3+⁽¹²⁾ 4o⁽¹¹⁾ 2-⁽¹¹⁾ 23+ 15 0.9

15 3+ 4o 3- 2o 2o⁽¹²⁾ 3o⁽¹²⁾ 2o⁽¹²⁾ 3o⁽¹²⁾ 22o 14 0.8

16 2o 2+ 3- 2o 3- 2o 2- 4- 19o 10 0.6

17 6o 5+ 3+ 5- 5- 4+ 3+ 3+ 35o 38 1.4

18 4o 3o 4+ 3o 2+ 4o 4o 2+ 27o 20 1.0

19 3+ 3o 2- 2- 2o 2+ 1+ 1+ 17- 9 0.5

20 2o 3o 3+ 3- 3o 2+ 2o 3o 21+ 12 0.7

21 4o 3- 3+ 3o 2o 1o 2- 2+ 20o 12 0.7

22 2o 2- 1+ 1o 1+ 1+ 2+ 1+ 12+ 6 0.3

23 2- 2- 2o 2o 2+ 3- 1o 2- 15o 7 0.4

24 1+ 1o 1o 1o 1o 1o 1- 1+ 8+ 4 0.1

25 2- 2o 2o 1o 2o 2- 1+ 1o 13- 6 0.3

26 1o 1+ 2o 1o 3o⁽¹²⁾ 1o⁽¹²⁾ 2-⁽¹²⁾ 3-⁽¹²⁾ 14- 7 0.4

27 2-⁽¹²⁾ 2-⁽¹²⁾ 1o⁽¹²⁾ 2+⁽¹²⁾ 3o⁽¹²⁾ 2+⁽¹²⁾ 4o⁽¹²⁾ 4+⁽¹²⁾ 20+ 14 0.8

28 4-⁽¹²⁾ 4o⁽¹²⁾ 2+⁽¹²⁾ 3o⁽¹²⁾ 1+⁽¹²⁾ 3o⁽¹²⁾ 3+⁽¹²⁾ 3+⁽¹²⁾ 24o 16 0.9

29 6+⁽¹²⁾ 5o⁽¹²⁾ 5o⁽¹²⁾ 5o⁽¹²⁾ 6-⁽¹²⁾ 5+⁽¹²⁾ 6-⁽¹²⁾ 5+⁽¹²⁾ 43+ 60 1.7

30 5-⁽¹²⁾ 4o⁽¹²⁾ 4o⁽¹²⁾ 4-⁽¹²⁾ 4o⁽¹²⁾ 4+⁽¹²⁾ 4+⁽¹²⁾ 4-⁽¹²⁾ 33- 28 1.2

31 3o⁽¹²⁾ 3o⁽¹²⁾ 2+⁽¹²⁾ 2+⁽¹²⁾ 3+⁽¹²⁾ 2-⁽¹²⁾ 3o⁽¹²⁾ 4-⁽¹²⁾ 22+ 14 0.8

Mean 17 0.79


Kp three-hourly	daily
	1	2	3	4	5	6	7	8	Sum	Ap	Cp

1	3+	4o	4-	4o	4o	3+	5-	5-	32-	27	1.2
2	5o	5o	4o	4+	5-	5-	4-	5o	36+	38	1.4
3	5+	4o	4o	5-	3+	3o	3-	4-	31-	27	1.2
4	4o	3+	5-	2+	4-	4+	4o	4o	30+	25	1.2
5	3+	5-	4+	4+	4o	4+	4o	4o	33o	29	1.3
6	3+	2+	2+	3-	2+	2+	3+	4-	22+	13	0.8
7	2+	3-	2+	2o	2-	1-	1o	2o	15-	7	0.4
8	2+	3o	3o	2-	2o	2o	1-	4o	19-	11	0.6
9	3-	2o	1+	2-	2+	3+	4o	4+	22-	14	0.8
10	5-	4-	2-	2o	2-	1o	1+	2o	18o	12	0.7
11	2+	3o	2o	2-	3o	1+	4+	4o	22-	14	0.8
12	2o	2-	1o	1+	2o	1-	1o	2o⁽¹²⁾	12-	5	0.2
13	1+⁽¹¹⁾	2-⁽¹¹⁾	1+⁽¹¹⁾	1+⁽¹¹⁾	1+⁽¹¹⁾	3-⁽¹¹⁾	3+⁽¹¹⁾	3+⁽¹¹⁾	16+	9	0.5
14	4-	2+⁽¹²⁾	2o⁽¹²⁾	3-⁽¹²⁾	4-⁽¹²⁾	3+⁽¹²⁾	4o⁽¹¹⁾	2-⁽¹¹⁾	23+	15	0.9
15	3+	4o	3-	2o	2o⁽¹²⁾	3o⁽¹²⁾	2o⁽¹²⁾	3o⁽¹²⁾	22o	14	0.8
16	2o	2+	3-	2o	3-	2o	2-	4-	19o	10	0.6
17	6o	5+	3+	5-	5-	4+	3+	3+	35o	38	1.4
18	4o	3o	4+	3o	2+	4o	4o	2+	27o	20	1.0
19	3+	3o	2-	2-	2o	2+	1+	1+	17-	9	0.5
20	2o	3o	3+	3-	3o	2+	2o	3o	21+	12	0.7
21	4o	3-	3+	3o	2o	1o	2-	2+	20o	12	0.7
22	2o	2-	1+	1o	1+	1+	2+	1+	12+	6	0.3
23	2-	2-	2o	2o	2+	3-	1o	2-	15o	7	0.4
24	1+	1o	1o	1o	1o	1o	1-	1+	8+	4	0.1
25	2-	2o	2o	1o	2o	2-	1+	1o	13-	6	0.3
26	1o	1+	2o	1o	3o⁽¹²⁾	1o⁽¹²⁾	2-⁽¹²⁾	3-⁽¹²⁾	14-	7	0.4
27	2-⁽¹²⁾	2-⁽¹²⁾	1o⁽¹²⁾	2+⁽¹²⁾	3o⁽¹²⁾	2+⁽¹²⁾	4o⁽¹²⁾	4+⁽¹²⁾	20+	14	0.8
28	4-⁽¹²⁾	4o⁽¹²⁾	2+⁽¹²⁾	3o⁽¹²⁾	1+⁽¹²⁾	3o⁽¹²⁾	3+⁽¹²⁾	3+⁽¹²⁾	24o	16	0.9
29	6+⁽¹²⁾	5o⁽¹²⁾	5o⁽¹²⁾	5o⁽¹²⁾	6-⁽¹²⁾	5+⁽¹²⁾	6-⁽¹²⁾	5+⁽¹²⁾	43+	60	1.7
30	5-⁽¹²⁾	4o⁽¹²⁾	4o⁽¹²⁾	4-⁽¹²⁾	4o⁽¹²⁾	4+⁽¹²⁾	4+⁽¹²⁾	4-⁽¹²⁾	33-	28	1.2
31	3o⁽¹²⁾	3o⁽¹²⁾	2+⁽¹²⁾	2+⁽¹²⁾	3+⁽¹²⁾	2-⁽¹²⁾	3o⁽¹²⁾	4-⁽¹²⁾	22+	14	0.8
									Mean	17	0.79

Note: If not the complete data from all 13 observatories could be used in the calculation, the number of already included observatories is given in parentheses.

Editor:

GFZ Helmholtz Centre for Geosciences

Adolf Schmidt Observatory for Geomagnetism

https://kp.gfz.de/en/