IUGG: Association of Geomagnetism and Aeronomy

(International Service of Geomagnetic Indices)

August 2025

International quiet and disturbed days

Geomagnetic Planetary Indices

Kp three-hourly									daily
	1	2	3	4	5	6	7	8	Sum	Ap	Cp
1	2+	3-	2+	2+	3o	1+	3-	3+	20o	11	0.6
2	3o	2o	1+	1o	2-	2+	2+	3-	16+	8	0.5
3	2-	1o	1o	2-	2-	3-	4o	2-	15+	9	0.5
4	0+	1+	2o	2+	2o	2+	2o	2+	15-	7	0.3
5	3o	2o	1-	1+	3-	2+	3-	2+	17o	9	0.5
6	2-	1+	1-	1+	1o	2o	1+	3-	12o	6	0.3
7	1o	1o	0+	1o	1-	0+	0+	1o	6-	3	0.1
8	0+	1+	1o	3o	5-	4o	5o	3+	23-	20	1.0
9	5o	5-	5o	5o	5o	6-	4o	3+	38-	43	1.5
10	3+	2+	4+	4o	3o	4o	4o	3o	28o	21	1.1
11	4+	2+	3+	2+	3+	4o	2+	3-	25-	17	0.9
12	4o	3o	2o	2o	3o	3-	2+	3o	22o	13	0.8
13	2o	3-	3-	2+	3-	3o	3o	3+	22-	12	0.7
14	3+	2o	3o	3-	2o	1+	1+	2o	18-	10	0.5
15	2+	2o	2o	1+	1+	1+	2-	1+	13+	6	0.3
16	0+	1+	1-	1+	1o	2-	1o	2-	9o	4	0.2
17	1-	1+	2-	1o	2-	1o	0+	0o	8-	4	0.1
18	0o	0+	1-	2o	2+	3o	1+	2o	12-	6	0.3
19	3o	2o	2o	2+	4o	4o	5-	4-	26-	19	1.0
20	4o	3o	3o	2o	1+	2o	2+	3o	21-	12	0.7
21	3-	2o	1-	1o	1o	2-	2+	2o	13+	6	0.3
22	3o	2o	1-	1-	2-	2-	2o	3-	14+	7	0.4
23	2o	2o	1o	2-	1o	1-	1-	1+	10+	5	0.2
24	2-	2-	1-	1o	1o	1+	2-	1o	10o	5	0.2
25	1-	2-	0+	1o	3o	3o	2-	2-	13o	7	0.4
26	2-	3-	2-	2+	1+	1o	1+	2-	14-	7	0.3
27	1+	1-	1-	2+	3-	2-	2o	2o	13+	6	0.3
28	2-	1+	2o	1+	2-	2-	2-	2o	13+	6	0.3
29	2o	2-	1-	1o	2-	1+	2o	2o	12+	6	0.3
30	1+	1o	2-	2o	2-	2o	2-	2+	14-	6	0.3
31	2o	2-	1+	2+	2-	2o	2-	1o	14-	6	0.3
									Mean	10	0.49

Preliminary sudden commencements: none