I find that chart too course in it's graduation. I use this.
0 mph - very rarely exists
1 mph - is more of a wind "impression" than a breeze. Open your freezer and stick your head so you can feel the cold air falling out. That is about what 1 mph feels like. Mirage still looks like a boil.
2 mph - The hairs on your arm will start to tickle, you can feel direction on your face. Tops of grasses begin to twitch; small leaves of deciduous trees begin to inconsistently twitch. Mirage just starts to get organized and lean maybe 15 degrees.
3 mph - Hairs on your arm move consistently, light grasses move furtively, leaves of deciduous trees continuously twitch around. Mirage is at about 30 degrees.
4 mph - If you turn your face into the wind, you can just begin to hear the wind rattle in your ears. Deciduous leaves stay busy and the twigs they are attached to begin to sway. Grasses are in constant motion. Mirage is about 45 degrees.
5 mph - The wind is a constant rattle in your ears, your loose clothing is just beginning to be pressed against your body. The smallest limbs of deciduous trees begin to move furtively. Grass begins to lie over. Mirage is about 55 degrees.
6 mph - Loose clothing is constantly pressed to the body, small limbs of deciduous trees in constant motion. Mirage is about 60 degrees.
8 mph - Main limbs sway. Mirage is about 70 degrees.
10 mph – The wind starts to get loud through the trees. Mirage is almost flat.