What bands are open right now?
Updated recently · Mixed HF conditions with daylight favoring mid and upper bands.
Check estimated HF band conditions, MUF and LUF, and guidance to help you choose a band.
Usable HF window · Global snapshot
LUF
3.8 MHz
MUF
24.6 MHz
Global window: 3.8 – 24.6 MHz
Global snapshot
Global snapshot
SFI
148
Solar support
Solar flux: high is good
Kp
2.7
Mostly calm
Geomagnetic: low is good
A index
11
Background stability
Daily background: low is good
80m
Unlikely
40m
Excellent
20m
Excellent
15m
Poor
10m
Unlikely
6m
Unlikely
Best bands now
20m, 40m
Good to Excellent.
Worth trying
15m
Possible openings.
DX candidates
20m, 17m
Long-path candidate
Regional candidates
40m, 80m
NVIS / short-skip candidate
These are estimates. Actual usability depends on path, distance, direction, time of day, and local noise.
View the gray line from your station to a target path to assess daylight, darkness, or gray-line overlap.
BEST PATH RIGHT NOW
Primary recommended band
Set your station
Path
Global view Add Grid
Add your grid to localize the map, then add a target path for route-aware band guidance.
Also try
N/A
No strong secondary option.
Alternative
No strong alternative
No strong alternative for this path.
Supporting metrics for checking how the route estimate was formed.
Using global view until a location is known.
N/A
N/A
Optional. Add a target to draw a great-circle path and daylight read.
Open in Grid Lookup ↗ Open in Grid Lookup ↗No clear band right now
No clear band right now
No clear band right now
Best directions to try
Add your grid or use device location to unlock directional hints.
Next few hours
20m · 40m
15m is worth checking while daylight support holds.
Next 24 hours
Expected day/night choices, not a precise forecast.
Expected day/night choices based on current conditions and normal HF behavior, not a precise forecast.
Next 3 days
20m · 40m
Likely operating pattern if solar and geomagnetic conditions stay near the current trend; check bands as conditions change.
Use the recent trend, not just the current value, to judge whether a band is improving or fading.
128 SFI
Improving
24h agonow
2.0 Kp
Stable
24h agonow
14.5 MHz
Improving
24h agonow
22 Risk
Improving
24h agonow
Live inputs behind the band recommendations.
Solar Flux Index
148
Enough solar support to keep 20m healthy and give 15m a plausible daytime opening.
Kp
2.7
Geomagnetic conditions are mostly calm, which helps routine HF paths stay more predictable.
A index
11
The day is only mildly unsettled overall, not strongly storm-driven.
Solar wind
412 km/s
Near-background wind speed suggests no major solar-wind-driven disruption at the moment.
Bz
-1.8 nT
Slightly southward Bz can matter if it stays negative, but this alone does not imply a major geomagnetic hit.
Absorption / blackout risk
Low
D-region absorption is present but not at a level that should shut down routine HF outright.
Full Propagation View combines current solar and geomagnetic inputs with path length and day/night geometry to suggest which HF bands may be worth checking now. It is an operating aid, not guaranteed coverage: actual usability still depends on the antenna system, power, local noise, latitude, and changing ionospheric behavior.
Start with the band recommendations, then compare MUF, LUF, and the route direction you care about. If the estimate looks marginal, begin with the more conservative band and listen before moving higher. Review typical propagation patterns for a static band baseline, then pair this page with Solar Conditions when you want to see the raw numbers driving the estimate.
The map visualizes how current conditions may support different HF bands across broad regions and paths. It is a planning layer for deciding where to listen first, not a guarantee of a specific contact.
Daylight, darkness, and gray-line geometry change ionospheric behavior across a path. Higher HF bands usually favor stronger daytime support, while lower bands often improve after sunset as absorption drops. That means the best band can change by hour, even when your station, antenna, and target area stay the same.
Check before skeds, portable activations, DX attempts, and any operating session where band choice matters. It is also worth refreshing conditions shortly before you call, because HF can shift fast with daylight changes or geomagnetic movement. Use it as an operating decision aid, then confirm by listening on the band itself.