Wind & Wind gust
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Wind (m/s)	1.81	1.61	1.5	1.69	1.39	1.5	1.31	1.39	1.69	1.81	2.11	2.11	2.11	2	1.69	1.5	1.39	1.31	1.89	2.11	2.19	2.31	2.39	2.39
Wind gust (m/s)	2.53	2.11	1.83	2.14	1.92	1.81	1.33	1.42	2.5	2.61	2.81	2.53	2.31	2	6.69	6.5	1.42	1.42	2.19	2.83	3.31	3.89	4.42	4.39
Wind direction (°)	SE 138°	SSE 152°	SSE 159°	SSE 155°	SSE 147°	SSE 152°	SSE 148°	SSE 148°	SE 143°	SE 146°	SSE 148°	SSE 154°	SSE 156°	SSE 149°	SSE 147°	SSE 153°	SSE 148°	ESE 123°	E 98°	E 95°	E 101°	ESE 106°	ESE 112°	ESE 123°

Air humidity

Humidity
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Humidity (%)	39	40	40	41	43	44	45	46	46	41	36	33	30	28	26	26	25	27	30	34	35	36	38	38

Atmospheric pressure

Pressure
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Pressure (mm Hg)	767	767	767	767	767	767	767	767	768	768	768	768	767	767	766	766	766	766	766	766	766	767	767	767

Ultraviolet index

UV Index
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
UV Index	0	0	0	0	0	0	0	0	5	5	5	6	6	6	6	6	6	6	6	0	0	0	0	0

Air quality & pollen

Air quality is available for the first three days only.

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Thu, Oct 22, 2026

St. Louis on the map

Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.

Learn more about our methodology →