NOAA SOLAR DATA | 2026-03-07 03:05:00 UTC
ACTIVE
MUF 27.0 MHz | S/N S3-4
143
SOLAR FLUX INDEX
GOOD
7
A-INDEX
QUIET
4
K-INDEX
ACTIVE
B6.4
X-RAY
NOMINAL
51.2
ELECTRON FLUX
NORMAL
0.5
PROTON FLUX
NORMAL
PARTICLE RADIATION
27.0
MHz
MAX USABLE FREQ
HF OPEN
HF BAND CONDITIONS
600m
100
DAY
GOOD
88
NIGHT
GOOD
160m
97
DAY
GOOD
85
NIGHT
GOOD
80m
94
DAY
GOOD
83
NIGHT
GOOD
40m
92
DAY
GOOD
82
NIGHT
GOOD
20m
86
DAY
GOOD
76
NIGHT
FAIR
10m
66
DAY
FAIR
54
NIGHT
FAIR
6m
54
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