Weather Forecast for St Louis
Missouri, United States of America
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Current Weather - St Louis: 18°C
Current Weather - St Louis: 18°C
Missouri, United States of America
Partly cloudy
Feels like 18°C
Wind
20 km/h W
Humidity
33%
Pressure
1015 mb
UV Index
3
Visibility
16 km
Sunny
Thursday, May 07, 2026
High
20°C
Low
5°C
Rain Chance
0%
Hourly Forecast
12°C
Day Statistics
Maximum Wind
20 km/h
Humidity
58%
Precipitation
0 mm
UV Index
7
Visibility
10 km
Rain Chance
0%
Snow Chance
0%
Sun & Moon
Sunrise
05:57 AM
Sunset
07:59 PM
Moonrise
12:50 AM
Moonset
10:07 AM
Moon Phase
Waning Gibbous
Moon Illumination
77%
Air Quality
PM2.5
9.8
μg/m³
PM10
10.8
μg/m³
NO₂
14.6
μg/m³
O₃
67.6
μg/m³
SO₂
2.3
μg/m³
CO
193.1
μg/m³
Moderate rain
Friday, May 08, 2026
High
25°C
Low
9°C
Rain Chance
88%
Hourly Forecast
12°C
11°C
11°C
11°C
10°C
10°C
10°C
11°C
14°C
16°C
18°C
20°C
22°C
23°C
24°C
24°C
23°C
22°C
20°C
19°C
17°C
16°C
16°C
16°C
Day Statistics
Maximum Wind
20 km/h
Humidity
65%
Precipitation
10 mm
UV Index
7
Visibility
9 km
Rain Chance
88%
Snow Chance
0%
Sun & Moon
Sunrise
05:56 AM
Sunset
08:00 PM
Moonrise
01:27 AM
Moonset
11:09 AM
Moon Phase
Waning Gibbous
Moon Illumination
68%
Air Quality
PM2.5
7.9
μg/m³
PM10
8.3
μg/m³
NO₂
10.6
μg/m³
O₃
79.3
μg/m³
SO₂
2.8
μg/m³
CO
212.7
μg/m³
Patchy rain nearby
Saturday, May 09, 2026
High
26°C
Low
12°C
Rain Chance
78%
Hourly Forecast
15°C
15°C
14°C
14°C
13°C
13°C
13°C
14°C
16°C
18°C
20°C
22°C
23°C
25°C
25°C
26°C
26°C
26°C
25°C
22°C
21°C
19°C
18°C
17°C
Day Statistics
Maximum Wind
16 km/h
Humidity
67%
Precipitation
2 mm
UV Index
8
Visibility
8 km
Rain Chance
78%
Snow Chance
0%
Sun & Moon
Sunrise
05:55 AM
Sunset
08:01 PM
Moonrise
01:58 AM
Moonset
12:13 PM
Moon Phase
Last Quarter
Moon Illumination
59%
Air Quality
PM2.5
10.1
μg/m³
PM10
11
μg/m³
NO₂
14.4
μg/m³
O₃
68.4
μg/m³
SO₂
2.7
μg/m³
CO
238.5
μg/m³
Patchy rain nearby
Sunday, May 10, 2026
High
18°C
Low
12°C
Rain Chance
80%
Hourly Forecast
17°C
16°C
16°C
15°C
14°C
14°C
14°C
14°C
15°C
15°C
16°C
17°C
17°C
18°C
18°C
17°C
17°C
17°C
17°C
16°C
15°C
14°C
13°C
12°C
Day Statistics
Maximum Wind
21 km/h
Humidity
69%
Precipitation
0 mm
UV Index
7
Visibility
10 km
Rain Chance
80%
Snow Chance
0%
Sun & Moon
Sunrise
05:54 AM
Sunset
08:01 PM
Moonrise
02:25 AM
Moonset
01:18 PM
Moon Phase
Waning Crescent
Moon Illumination
49%
Air Quality
PM2.5
8.4
μg/m³
PM10
9.3
μg/m³
NO₂
10.4
μg/m³
O₃
81
μg/m³
SO₂
2.9
μg/m³
CO
246.3
μg/m³
Sunny
Monday, May 11, 2026
High
21°C
Low
9°C
Rain Chance
0%
Hourly Forecast
11°C
11°C
10°C
10°C
10°C
9°C
10°C
11°C
12°C
14°C
16°C
17°C
19°C
19°C
20°C
20°C
20°C
20°C
18°C
17°C
16°C
15°C
14°C
13°C
Day Statistics
Maximum Wind
14 km/h
Humidity
58%
Precipitation
0 mm
UV Index
8
Visibility
10 km
Rain Chance
0%
Snow Chance
0%
Sun & Moon
Sunrise
05:53 AM
Sunset
08:02 PM
Moonrise
02:49 AM
Moonset
02:23 PM
Moon Phase
Waning Crescent
Moon Illumination
39%
Air Quality
PM2.5
3.8
μg/m³
PM10
3.9
μg/m³
NO₂
9.3
μg/m³
O₃
68.6
μg/m³
SO₂
1.7
μg/m³
CO
161
μg/m³
Patchy rain nearby
Tuesday, May 12, 2026
High
26°C
Low
10°C
Rain Chance
53%
Hourly Forecast
12°C
12°C
11°C
11°C
10°C
10°C
11°C
12°C
14°C
16°C
18°C
19°C
21°C
23°C
24°C
25°C
25°C
24°C
24°C
23°C
22°C
21°C
20°C
19°C
Day Statistics
Maximum Wind
23 km/h
Humidity
67%
Precipitation
0 mm
UV Index
0
Visibility
10 km
Rain Chance
53%
Snow Chance
0%
Sun & Moon
Sunrise
05:52 AM
Sunset
08:03 PM
Moonrise
03:14 AM
Moonset
03:30 PM
Moon Phase
Waning Crescent
Moon Illumination
29%
Patchy rain nearby
Wednesday, May 13, 2026
High
20°C
Low
13°C
Rain Chance
81%
Hourly Forecast
18°C
17°C
17°C
16°C
16°C
15°C
15°C
15°C
15°C
16°C
17°C
17°C
18°C
18°C
19°C
19°C
19°C
19°C
18°C
17°C
16°C
15°C
14°C
13°C
Day Statistics
Maximum Wind
26 km/h
Humidity
70%
Precipitation
1 mm
UV Index
4
Visibility
10 km
Rain Chance
81%
Snow Chance
0%
Sun & Moon
Sunrise
05:51 AM
Sunset
08:04 PM
Moonrise
03:38 AM
Moonset
04:40 PM
Moon Phase
Waning Crescent
Moon Illumination
19%
Solar Radiation Data
Shortwave Radiation
780.32
Diffuse Radiation
227.73
DNI
0
GTI
219.89
Weather Alerts
Flood Warning issued May 6 at 10:00PM CDT until May 8 at 7:00PM CDT by NWS St Louis MO
...The Flood Warning continues for the following rivers in Illinois... Illinois River at Hardin. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Illinois River at Hardin. * WHEN...Until Friday evening. * IMPACTS...At 25.0 feet, Flood Stage. Lowland flooding of unprotected agricultural land occurs. * ADDITIONAL DETAILS... - At 9:30 PM CDT Wednesday the stage was 25.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:30 PM CDT Wednesday was 25.3 feet. - Forecast...The river is expected to continue slowly falling tonight. It will then fall below flood stage early tomorrow afternoon. - Flood stage is 25.0 feet.
Motorists should not attempt to drive around barricades or drive cars through flooded areas. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
Flood Warning issued May 7 at 11:53AM CDT by NWS St Louis MO
...The National Weather Service in St Louis has issued a Flood Warning for the following river in Illinois... Kaskaskia River at Carlyle. River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Kaskaskia River at Carlyle. * WHEN...From this morning until further notice. * IMPACTS...At 20.3 feet, Township roads downstream in Covington begin flooding near this height. * ADDITIONAL DETAILS... - At 11:30 AM CDT Thursday the stage was 17.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 11:30 AM CDT Thursday was 17.0 feet. - Forecast...The river is expected to rise to 20.2 feet early tomorrow afternoon. Additional rises are possible thereafter. - Flood stage is 16.5 feet.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Rainfall heavier than forecast could cause river levels to rise even higher than predicted. The National Weather Service will monitor this developing situation and issue follow up statements as conditions change. This product, along with additional weather and stream information, is available at https://water.noaa.gov/wfo/lsx
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