St Louis Weather Conditions & Forecast, December 25, 2017

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

ST LOUIS, MO/December 25, 2017 (STL.News) St Louis weather conditions & forecast readings from the St. Louis Lambert International Airport at 4:51 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: 18°F – -8°C
Humidity: 77%
Wind Speed: W 7 mph
Barometer: 30.36 in (1029.7 MB)
Dew-point: 12°F – -11°C
Visibility: 10 Miles
Wind Chill: 9°F – -13°C
Heat Index: N/A°F – N/A°C

Extended Weather Forecast for the St Louis, Missouri area beginning December 25, 2017

CHRISTMAS DAY – MERRY CHISTMAS – Increasing clouds – high near 31, west wind 5 to 8 mph.
Tonight: Scattered snow showers after 9 pm, cloudy – low around 14 with light and variable wind becoming north 5 to 8 mph in the pm.  Chance of precipitation – 30%.
Tuesday: Scattered snow showers, mostly cloudy and cold with a high near 18 with north wind 8 to 10 mph.  Chance of precipitation is 30%.
Tuesday Night: Mostly cloudy – low around 7 with north wind 6 to 10 mph.
Wednesday: Sunny and cold – high near 18 with north wind 7 to 9 mph.
Wednesday Night: Partly cloudy – low around 10.
Thursday: 20 percent chance of snow after in the pm, mostly cloudy – high near 26.
Thursday Night: Mostly cloudy – low around 17.
Friday: Mostly cloudy – high near 31.
Friday Night: 30 percent chance of snow after midnight, mostly cloudy – low around 13.
Saturday: 30 percent chance of snow, mostly cloudy and cold – high near 17.
Saturday Night: 40 percent chance of snow, mostly cloudy – low around 10.
Sunday: 40 percent chance of snow, mostly cloudy and cold – high near 17.

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

Delayed Air Quality Index: 12/24/17 8:00 PM CST

  • Good – 29 AQI – Ozone
  • Good – 16 AQI – Particle Pollution (2.5 microns)
  • Good – 6 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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