NOAA SOLAR DATA | 2026-03-09 21:10:00 UTC
QUIET
MUF 24.0 MHz | S/N S1-2
128
SOLAR FLUX INDEX
GOOD
6
A-INDEX
QUIET
2
K-INDEX
QUIET
B8.2
X-RAY
NOMINAL
193.7
ELECTRON FLUX
ACTIVE
3.7
PROTON FLUX
NORMAL
PARTICLE RADIATION
24.0
MHz
MAX USABLE FREQ
HF OPEN
HF BAND CONDITIONS
600m
100
DAY
GOOD
88
NIGHT
GOOD
160m
96
DAY
GOOD
85
NIGHT
GOOD
80m
93
DAY
GOOD
83
NIGHT
GOOD
40m
91
DAY
GOOD
82
NIGHT
GOOD
20m
85
DAY
GOOD
76
NIGHT
FAIR
10m
65
DAY
FAIR
54
NIGHT
FAIR
6m
53
DAY
FAIR
41
NIGHT
POOR
7-DAY HISTORY
SOLAR INDICES
PARTICLE FLUX
Data source: NOAA Space Weather Prediction Center • Algorithm by RigReference • Classic view & widget embed codes