This is the average speed, no speed of gusts of wind!
0 BFT CALM: smoke rises vertically 1 BFT LIGHT AIR : smoke drift indicates wind direction, still wind vanes 2 BFT LIGHT BREEZE : wind felt on exposed skin. Leaves rustle, vanes begin to move 3 BFT GENTLE BREEZE : leaves and small twigs constantly moving, light flags extended 4 BFT MODERATE BREEZE : dust and loose paper raised. Small branches begin to move 5 BFT FRESH BREEZE : branches of moderate size move. Small trees in leaf begin to sway. 6 BFT STRONG BREEZE : large branches in motion. Kiting is dangerous for damage. 7 BFT HIGH WIND - MODERATE GALE : effort needed to walk against the wind. Kiting is not advised.