NOAA SOLAR DATA | 2026-10-05 04:00:01 UTC
ACTIVE
MUF 16.2 MHz | S/N S3-4
92
SOLAR FLUX INDEX
FAIR
36
A-INDEX
UNSETTLED
4
K-INDEX
ACTIVE
B2.4
X-RAY
NOMINAL
198.8
ELECTRON FLUX
ACTIVE
3.5
PROTON FLUX
NORMAL
PARTICLE RADIATION
16.2
MHz
MAX USABLE FREQ
HF OPEN
G1
GEOMAG STORM
MINOR
R0
RADIO BLACKOUT
NONE
NOAA STORM SCALES
G0
GEOMAG FORECAST
NONE
R0
BLACKOUT FORECAST
NONE
24H FORECAST
HF BAND CONDITIONS
600m
83
DAY
GOOD
72
NIGHT
FAIR
160m
80
DAY
GOOD
70
NIGHT
FAIR
80m
78
DAY
FAIR
69
NIGHT
FAIR
40m
76
DAY
FAIR
68
NIGHT
FAIR
20m
65
DAY
FAIR
56
NIGHT
FAIR
10m
45
DAY
POOR
34
NIGHT
POOR
6m
44
DAY
POOR
33
NIGHT
POOR
7-DAY HISTORY
SOLAR INDICES
PARTICLE FLUX
Data source: NOAA Space Weather Prediction Center • Algorithm by RigReference • Classic view & widget embed codes