St Louis Weather Conditions and Forecast, December 16, 2017

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

ST LOUIS, MO/December 16, 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.).

Current Weather Conditions

WEATHER WARNING: Hazardous Weather Outlook

Temperature: 39°F – 4°C
Humidity: 57%
Wind Speed: SW 16 mph
Barometer: 29.97 in (1015.7 MB)
Dew-point: 25°F – -4°C
Visibility: 10 Miles
Wind Chill: 30°F – -1°C
Heat Index: N/A°F – N/A°C

Extended Weather Forecast for the St Louis, Missouri area beginning December 16, 2017

Today: Sunny – high near 62 with southwest wind 7 to 13 mph gusting as high as 25 mph.
Tonight: Increasing clouds – low around 41 with south wind 6 to 8 mph.
Sunday: Chance of rain in the am – high near 49 with south wind around 6 mph and chance of precipitation – 80%.
Sunday Night: Mostly cloudy – low around 41 with southwest wind 3 to 5 mph.
Monday: Partly sunny – high near 59 with southwest wind 5 to 8 mph.
Monday Night: Partly cloudy – low around 41.
Tuesday: Sunny, with a high near 61.
Tuesday Night: Mostly clear – low around 34.
Wednesday: Mostly sunny – high near 51.
Wednesday Night: Partly cloudy – low around 36.
Thursday: Partly sunny – high near 54.
Thursday Night: Chance of rain/snow, mostly cloudy – low around 30 with chance of precipitation – 40%.
Friday: Partly sunny – high near 40.

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

Delayed Air Quality Index: 12/15/17 5:00 PM CST

  • Good – 29 AQI – Ozone
  • Good – 7 AQI – Particle Pollution (2.5 microns)
  • Good – 12 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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