St Louis Weather Conditions & Forecast, December 23, 2017

St Louis Weather Conditions & Forecast, December 23, 2017

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

ST LOUIS, MO/December 23, 2017 (STL.News) 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

WEATHER WARNING: Hazardous Weather Outlook

Temperature: 31°F – -1°C
Humidity: 100%
Wind Speed: NW 12 mph
Barometer: 30.08 in (1019.3 MB)
Dew-point: 31°F – -1°C
Visibility: 1.25 Miles
Wind Chill: 22°F – -6°C
Heat Index: N/A°F – N/A°C

Extended Weather Forecast for the St Louis, Missouri area beginning December 23, 2017

Today: 30 percent chance of snow early am, cloudy through mid morning, gradual clearing – high near 37 with northwest wind 5 to 10 mph.
Tonight: Mostly cloudy – low around 24 with northeast wind 3 to 6 mph.
Sunday: Snow likely before noon, cloudy – high near 30 with north wind 5 to 9 mph becoming northwest in the afternoon with chance of precipitation – 70%.  Additional snow is possible.
Sunday Night: Mostly clear – low around 20 with with west wind 6 to 8 mph.
Christmas Day: Partly sunny – high near 34 with west wind 5 to 7 mph calming in the pm.
Monday Night: Mostly cloudy – low around 19.
Tuesday: Mostly cloudy – high near 25.
Tuesday Night: Mostly cloudy – low around 11.
Wednesday: Mostly sunny – high near 23.
Wednesday Night: Mostly cloudy – low around 15.
Thursday: 40 percent chance of snow, mostly cloudy – high near 30.
Thursday Night: 20 percent chance of snow, mostly cloudy – low around 20.
Friday: 20 percent chance of snow, partly sunny – high near 31.

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

Delayed Air Quality Index: 12/21/17 10:00 PM CST

  • Moderate – 55 AQI – Particle Pollution (2.5 microns)
  • Good – 3 AQI – Ozone
  • Good – 7 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 – (MS)


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