Wind speed & Beaufort scale

City weather APIs use Beaufort force for wind_level / gust_level; wind_speed is in m/s.

Beaufort scale (common)

Force	Name	Wind speed (m/s)	Wind speed (km/h)
0	Calm	0.0–0.2	< 1
1	Light air	0.3–1.5	1–5
2	Light breeze	1.6–3.3	6–11
3	Gentle breeze	3.4–5.4	12–19
4	Moderate breeze	5.5–7.9	20–28
5	Fresh breeze	8.0–10.7	29–38
6	Strong breeze	10.8–13.8	39–49
7	Near gale	13.9–17.1	50–61
8	Gale	17.2–20.7	62–74
9	Strong gale	20.8–24.4	75–88
10	Storm	24.5–28.4	89–102
11	Violent storm	28.5–32.6	103–117
12	Hurricane	≥ 32.7	≥ 118

Station forecast wind fields are returned directly in m/s (wind_speed_10m, etc.) without a separate Beaufort level.