St Louis Weather Conditions and Forecast, December 13, 2017

St Louis Weather Conditions and Forecast, December 13, 2017

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

ST LOUIS, MO/December 13, 2017 (STL.News) St Louis weather conditions & forecast readings from the St. Louis Lambert International Airport at 3:51 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.).

WARNING: Hazardous Weather Outlook

Current Weather Conditions

Temperature: 30°F – -1°C
Humidity: 49%
Wind Speed: SW 8 mph
Barometer: 29.88 in (1012.7 MB)
Dew-point: 13°F – -11°C
Visibility: 10 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 13, 2017

Today: Sunny – high near 55, breezy, with a south wind 9 to 14 mph, 16 to 21 mph in the pm winds gusting as high as 34 mph.
Tonight: Mostly cloudy – low around 27 with northwest wind 8 to 17 mph gusting as high as 26 mph.
Thursday: Partly sunny – high near 37 with north wind 3 to 7 mph.
Thursday Night: Mostly cloudy – low around 26 with calm wind west around 5 mph after midnight.
Friday: Mostly sunny – high near 42 with west wind 5 to 9 mph.
Friday Night: Mostly clear – low around 29.
Saturday: Sunny – high near 53.
Saturday Night: 40 percent chance of rain after midnight, partly cloudy – low around 37.
Sunday: 50 percent chance of rain in the am, mostly cloudy – high near 49.
Sunday Night: Mostly cloudy – low around 32.
Monday: Mostly sunny – high near 51.
Monday Night: Partly cloudy – low around 35.
Tuesday: Sunny – high near 51.

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

Delayed Air Quality Index: 12/12/17 11:00 PM CST

  • Good – 27 AQI – Particle Pollution (2.5 microns)
  • Good – 8 AQI – Ozone
  • Good – 9 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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