HF Propagation today may be classified into global (average) conditions and regional (local) conditions.
Here's a banner displaying today's global conditions:
The MUF 3000 Km Map illustrates the regional (current and near-future) HF propagation conditions:
Read more about HF Radio Propagation Today. See also an index for HF Radio Propagarion.
The Understanding HF Propagation Project offers radio amateurs a comprehensive overview and tutorials on various topics related to HF propagation.