Weather Forecast for St Louis
Missouri, United States of America
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Current Weather - St Louis: 26°C
Current Weather - St Louis: 26°C
Missouri, United States of America
Sunny
Feels like 27°C
Wind
25 km/h SSW
Humidity
64%
Pressure
1012 mb
UV Index
6
Visibility
16 km
Patchy rain nearby
Friday, April 17, 2026
High
33°C
Low
17°C
Rain Chance
78%
Hourly Forecast
29°C
28°C
26°C
24°C
21°C
19°C
Day Statistics
Maximum Wind
31 km/h
Humidity
70%
Precipitation
1 mm
UV Index
2
Visibility
10 km
Rain Chance
78%
Snow Chance
0%
Sun & Moon
Sunrise
06:21 AM
Sunset
07:40 PM
Moonrise
06:08 AM
Moonset
08:22 PM
Moon Phase
New Moon
Moon Illumination
0%
Air Quality
PM2.5
6.6
μg/m³
PM10
7.2
μg/m³
NO₂
11.8
μg/m³
O₃
74.4
μg/m³
SO₂
2.7
μg/m³
CO
199.6
μg/m³
Moderate rain
Saturday, April 18, 2026
High
17°C
Low
8°C
Rain Chance
76%
Hourly Forecast
19°C
18°C
17°C
17°C
16°C
15°C
13°C
10°C
9°C
9°C
10°C
11°C
12°C
14°C
15°C
16°C
16°C
16°C
15°C
14°C
12°C
11°C
10°C
9°C
Day Statistics
Maximum Wind
29 km/h
Humidity
70%
Precipitation
15 mm
UV Index
2
Visibility
10 km
Rain Chance
76%
Snow Chance
0%
Sun & Moon
Sunrise
06:20 AM
Sunset
07:41 PM
Moonrise
06:41 AM
Moonset
09:41 PM
Moon Phase
Waxing Crescent
Moon Illumination
1%
Air Quality
PM2.5
4.6
μg/m³
PM10
4.9
μg/m³
NO₂
5.9
μg/m³
O₃
78.5
μg/m³
SO₂
1.9
μg/m³
CO
172.6
μg/m³
Sunny
Sunday, April 19, 2026
High
21°C
Low
6°C
Rain Chance
0%
Hourly Forecast
8°C
8°C
7°C
7°C
6°C
6°C
6°C
7°C
9°C
11°C
13°C
15°C
17°C
19°C
20°C
20°C
20°C
20°C
19°C
18°C
17°C
15°C
12°C
12°C
Day Statistics
Maximum Wind
26 km/h
Humidity
55%
Precipitation
0 mm
UV Index
2
Visibility
10 km
Rain Chance
0%
Snow Chance
0%
Sun & Moon
Sunrise
06:19 AM
Sunset
07:42 PM
Moonrise
07:22 AM
Moonset
10:59 PM
Moon Phase
Waxing Crescent
Moon Illumination
3%
Air Quality
PM2.5
4.1
μg/m³
PM10
4.7
μg/m³
NO₂
6.7
μg/m³
O₃
82.2
μg/m³
SO₂
2.3
μg/m³
CO
185
μg/m³
Sunny
Monday, April 20, 2026
High
22°C
Low
6°C
Rain Chance
0%
Hourly Forecast
12°C
11°C
9°C
8°C
7°C
7°C
6°C
7°C
9°C
10°C
12°C
14°C
16°C
17°C
19°C
20°C
21°C
21°C
20°C
19°C
18°C
17°C
15°C
15°C
Day Statistics
Maximum Wind
18 km/h
Humidity
55%
Precipitation
0 mm
UV Index
2
Visibility
10 km
Rain Chance
0%
Snow Chance
0%
Sun & Moon
Sunrise
06:17 AM
Sunset
07:43 PM
Moonrise
08:12 AM
Moonset
No moonset
Moon Phase
Waxing Crescent
Moon Illumination
9%
Air Quality
PM2.5
5.6
μg/m³
PM10
6.1
μg/m³
NO₂
6
μg/m³
O₃
88.5
μg/m³
SO₂
3.1
μg/m³
CO
221.9
μg/m³
Patchy rain nearby
Tuesday, April 21, 2026
High
24°C
Low
12°C
Rain Chance
60%
Hourly Forecast
15°C
14°C
14°C
14°C
13°C
13°C
13°C
14°C
16°C
17°C
19°C
21°C
22°C
23°C
23°C
23°C
24°C
24°C
21°C
20°C
20°C
19°C
19°C
18°C
Day Statistics
Maximum Wind
28 km/h
Humidity
60%
Precipitation
4 mm
UV Index
0
Visibility
10 km
Rain Chance
60%
Snow Chance
0%
Sun & Moon
Sunrise
06:16 AM
Sunset
07:44 PM
Moonrise
09:14 AM
Moonset
12:11 AM
Moon Phase
Waxing Crescent
Moon Illumination
17%
Air Quality
PM2.5
5.4
μg/m³
PM10
5.9
μg/m³
NO₂
7.9
μg/m³
O₃
89.1
μg/m³
SO₂
4.1
μg/m³
CO
213.9
μg/m³
Patchy rain nearby
Wednesday, April 22, 2026
High
24°C
Low
17°C
Rain Chance
82%
Hourly Forecast
18°C
18°C
18°C
17°C
17°C
17°C
17°C
17°C
18°C
19°C
20°C
21°C
22°C
23°C
23°C
23°C
22°C
22°C
22°C
21°C
20°C
19°C
18°C
17°C
Day Statistics
Maximum Wind
10 km/h
Humidity
74%
Precipitation
1 mm
UV Index
4
Visibility
10 km
Rain Chance
82%
Snow Chance
0%
Sun & Moon
Sunrise
06:15 AM
Sunset
07:45 PM
Moonrise
10:23 AM
Moonset
01:13 AM
Moon Phase
Waxing Crescent
Moon Illumination
27%
Sunny
Thursday, April 23, 2026
High
28°C
Low
16°C
Rain Chance
0%
Hourly Forecast
16°C
16°C
16°C
16°C
16°C
16°C
16°C
17°C
19°C
21°C
23°C
24°C
26°C
27°C
27°C
28°C
27°C
26°C
25°C
24°C
23°C
22°C
21°C
21°C
Day Statistics
Maximum Wind
26 km/h
Humidity
62%
Precipitation
0 mm
UV Index
6
Visibility
10 km
Rain Chance
0%
Snow Chance
0%
Sun & Moon
Sunrise
06:13 AM
Sunset
07:46 PM
Moonrise
11:37 AM
Moonset
02:03 AM
Moon Phase
Waxing Crescent
Moon Illumination
38%
Solar Radiation Data
Shortwave Radiation
429.7
Diffuse Radiation
85.82
DNI
521.9
GTI
259.95
Weather Alerts
Flood Warning issued April 16 at 9:01PM CDT by NWS St Louis MO
...The Flood Warning is extended for the following river 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 forecast. * WHERE...Illinois River at Hardin. * WHEN...From Saturday afternoon until further notice. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 24.7 feet. - Forecast...The river is expected to rise above flood stage early Saturday afternoon. - Flood stage is 25.0 feet.
Motorists should not attempt to drive around barricades or drive cars through flooded areas. 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
Flood Warning issued April 16 at 10:12PM CDT by NWS St Louis MO
...The Flood Warning continues for the following rivers in Illinois...Missouri... Mississippi River at Saverton. Mississippi River at Winfield. Mississippi River at Hannibal. Mississippi River at Clarksville. Mississippi River at Louisiana. 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...Mississippi River at Clarksville. * WHEN...Until further notice. * IMPACTS...At 27.2 feet, Silo Park just northwest of Clarksville off Highway 79 begins flooding. * ADDITIONAL DETAILS... - At 10:00 PM CDT Thursday the stage was 26.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 PM CDT Thursday was 26.7 feet. - Forecast...The river is expected to rise to 27.4 feet Wednesday evening. Additional rises are possible thereafter. - Flood stage is 25.0 feet.
Motorists should not attempt to drive around barricades or drive cars through flooded areas. 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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