5-day weather forecast St. Louis 09-07-2026

Weather forecast St. Louis today 09.07.2026: sunny, temperature from 22 °C to 36 °C.

Precipitation probability 12%. Wind up to 5.19 m/s (gusts 9.97 m/s). Air humidity 44–96%, atmospheric pressure 756–760 mm Hg, UV index up to 9.4.

Sunrise 05:44
Sunset 20:27

Waning Crescent19% illuminated
Moonrise 00:55 · Moonset 15:29

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Table

Thu, Jul 9, 2026

Fri, Jul 10 →

Forecast from 22 °C to 36 °C and precipitation

Temperature & Precipitation
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
Temperature (°C)	25	24	24	24	23	23	23	24	25	27	30	34	35	36	35	33	32	34	32	27	25	23	23	22
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.37	0.43	2.14	6.77	0.44	0.65

Cloud cover and precipitation probability

Cloud cover & Rain chance
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
Cloud cover (%)	3	10	7	5	0	1	0	3	2	3	1	15	0	0	22	20	23	24	82	76	64	64	82	83
Rain chance (%)	12	14	15	15	16	13	13	14	11	9	6	5	3	1	2	3	4	3	37	43	70	86	58	65

Wind speed and direction

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)	2.19	2.39	2.39	2.39	1.5	2.39	2.69	1.61	2.5	2.81	2.31	2.11	2.81	3.5	2.81	1.89	0.5	1.39	1.69	1.5	5.19	5.19	3.19	2.81
Wind gust (m/s)	4.61	5.03	5.03	5.03	3.14	5.03	5.67	2.86	3.5	3.44	2.75	2.42	3.22	4.03	3.56	2.5	0.75	1.83	2.58	2.94	8	9.97	6.75	5.92
Wind direction (°)	SE 142°	SE 144°	SSE 157°	S 172°	S 182°	SSE 167°	S 183°	SSW 193°	SW 225°	WSW 237°	W 259°	SW 231°	SSW 204°	SSW 210°	SW 226°	WSW 250°	NNE 26°	ESE 115°	E 80°	NNE 29°	NNE 26°	NE 49°	ENE 62°	ENE 65°

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 (%)	87	90	93	93	96	90	90	92	84	79	72	66	58	48	44	54	58	51	63	79	87	95	96	96

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)	760	760	760	759	760	759	759	759	760	760	760	759	758	758	758	758	757	756	756	756	757	758	758	757

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	0.4	1.1	2.6	4.6	7	8.2	9.4	8.1	4.9	3.8	1.2	0.8	0.4	0	0	0	0

Air quality & pollen

Air quality
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
PM2.5 (µg/m³)	7.6	7.5	7.5	7.7	7.7	7.7	7.7	7.5	8.3	9	9.6	9.6	8.6	8.7	9.2	9.7	10.3	11	10.9	11.5	10.7	7.7	7	7.3
PM10 (µg/m³)	7.7	7.5	7.6	7.8	7.9	7.9	7.9	7.7	8.5	9.3	10.1	10.3	9.7	9.8	10.2	10.8	11.6	12.6	12.4	12.8	11.6	8.1	7.4	7.7
Ozone (O₃) (µg/m³)	70	63	57	53	50	46	44	51	76	111	138	151	157	159	160	157	151	141	127	113	99	85	72	62
NO₂ (µg/m³)	14.2	12.1	11.7	11.8	11.9	11.9	11.9	11.2	9.2	6.5	4.4	3.3	2.6	2.3	1.9	1.8	2.6	5.4	9.3	11.7	11.3	9.5	8.5	9.4
SO₂ (µg/m³)	2.8	2	1.7	1.7	1.7	1.7	1.8	2	2.6	3.4	4	4.2	4.2	4.2	4.1	4	3.9	3.8	3.6	3.4	2.9	2.4	2	2
CO (µg/m³)	173	165	161	159	158	158	158	158	156	154	150	143	135	130	129	130	134	142	152	159	162	162	160	154

Thu, Jul 9, 2026

Fri, Jul 10 →

Frequently asked questions about the weather in St. Louis

Today in St. Louis the temperature ranges from 22 °C to 36 °C, wind up to 5.19 m/s. Check the detailed hourly forecast above for more information.

The precipitation probability in St. Louis today is 12%. View the full multi-day forecast above to see the rain chances for each upcoming day.

The wind speed in St. Louis today reaches up to 5.19 m/s with gusts up to 9.97 m/s. Check the detailed wind chart above for hourly wind data.

The air humidity in St. Louis today ranges from 44% to 96%. View the humidity chart above for hourly details.

The UV index in St. Louis today reaches up to 9.4. Check the UV index chart above for hourly values throughout the day.

The atmospheric pressure in St. Louis today ranges from 756 to 760 mm Hg. View the pressure chart above for hourly readings.

Cloud cover in St. Louis today reaches up to 83%. Check the cloud cover chart above for hourly details throughout the day.

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 →