NOAA SOLAR DATA | 2026-09-25 03:00:01 UTC
UNSETTLED
MUF 20.6 MHz | S/N S2-3
112
SOLAR FLUX INDEX
FAIR
16
A-INDEX
QUIET
3
K-INDEX
ACTIVE
B9.8
X-RAY
NOMINAL
154.3
ELECTRON FLUX
ACTIVE
0.3
PROTON FLUX
NORMAL
PARTICLE RADIATION
20.6
MHz
MAX USABLE FREQ
HF OPEN
G0
GEOMAG STORM
NONE
R0
RADIO BLACKOUT
NONE
NOAA STORM SCALES
G0
GEOMAG FORECAST
NONE
R0
BLACKOUT FORECAST
NONE
24H FORECAST
HF BAND CONDITIONS
600m
87
DAY
GOOD
77
NIGHT
FAIR
160m
83
DAY
GOOD
74
NIGHT
FAIR
80m
81
DAY
GOOD
72
NIGHT
FAIR
40m
79
DAY
FAIR
71
NIGHT
FAIR
20m
74
DAY
FAIR
66
NIGHT
FAIR
10m
48
DAY
POOR
37
NIGHT
POOR
6m
46
DAY
POOR
36
NIGHT
POOR
7-DAY HISTORY
SOLAR INDICES
PARTICLE FLUX
Data source: NOAA Space Weather Prediction Center • Algorithm by RigReference • Classic view & widget embed codes