St Louis Weather Conditions & Forecast, April 16, 2018

St Louis Weather Conditions, Forecast & Air Quality Index readings published by STL.News

ST LOUIS, MO – St Louis weather conditions & forecast readings from the St. Louis Lambert International Airport at 5:51 a.m at Latitude: 38.75°N, Longitude: 90.37°W – Elevation 604 feet. Forecast is provided by the National Weather Service (N.W.S.).

Current Conditions

Hazardous Weather Conditions

Freeze Warning (1)

Freeze Warning (2)

Hazardous Weather Outlook

Temperature: 31°F – -1°C
Humidity: 72%
Wind Speed: W 16 Gusting 28 mph
Barometer: 30.00 in (1016.6 MB)
Dew-point: 23°F – -5°C
Visibility: 9 Miles
Wind Chill: 20°F – -7°C
Heat Index: N/A°F – N/A°C

Extended Weather Forecast for the St Louis, Missouri area beginning April 16, 2018

Overnight: Scattered flurries, cloudy – low around 27 with west wind around 14 mph gusting as high as 26 mph.
Monday: Scattered flurries early am, cloudy – high near 47 with NW wind 15 to 18 mph gusting as high as 32 mph.
Monday Night: Widespread frost after 4 am, otherwise, clear – low around 33 with NW wind 5 to 9 mph becoming light west gusting as high as 21 mph.
Tuesday: Widespread frost before 8 am, otherwise, sunny – high near 63 with light/variable wind becoming southeast around 6 mph in the afternoon.
Tuesday Night: Mostly cloudy – low around 51 with SE wind 6 to 8 mph.
Wednesday: Mostly sunny – high near 66 and breezy.
Wednesday Night: Partly cloudy – low around 39.
Thursday: Mostly sunny – high near 57.
Thursday Night: Partly cloudy – low around 39.
Friday: Mostly sunny – high near 60.
Friday Night: Mostly cloudy – low around 44.
Saturday: 20 percent chance of showers, mostly cloudy – high near 61.
Saturday Night: A 20 percent chance of showers, mostly cloudy – low around 46.
Sunday: 30 percent chance of showers, mostly cloudy – high near 62.

Air Quality Index for Saint Louis, Missouri – (A.Q.I.)

Delayed Air Quality Index: 04/16/18 1:00 AM CDT

  • Good – 37 AQI – Ozone
  • Good – 20 AQI – Particle Pollution (2.5 microns)
  • Good – 5 AQI – Particle Pollution (10 microns)

Agency: St. Louis Metropolitan Area (American Lung Association)

Air Quality Index (A.Q.I.)

Good – Air quality in considered “satisfactory” and air pollution poses little to no threat.

Moderate – Air quality is considered “acceptable.” However, some pollutants there may be a moderate health concern for a very small number of people who are sensitive to air pollution.

USG – while the general public will not likely be affected by this AQI range, people with lung disease, older adults and children are a great risk from exposure to ozone, whereas, persons with heart and lung disease, old adults and children are at greater risk from the presence of particles in the air.

Unhealthy – Everyone may begin to experience health effects members of sensitive groups may experience more serious health effects.

Very Unhealthy – Health Alert: everyone may experience more serious health effects.


Source: Current Weather Conditions and Forecast are obtained from the National Weather Service @ Forecast.Weather.Gov – Air Quality Index (AQI) readings are obtained from AirNow.Gov


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