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St Louis Weather Conditions & Forecast, January 3, 2018

St Louis Weather Conditions & Forecast, January 3, 2018

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

Current Conditions


Hazardous Weather Outlook

Temperature: 21°F – -6°C
Humidity: 52%
Wind Speed: W 13 mph
Barometer: 30.17 in (1023.3 MB)
Dew-point: 6°F – -14°C
Visibility: 10 Miles
Wind Chill: 8°F – -13°C
Heat Index: N/A°F – N/A°C

Extended Weather Forecast for the St Louis, Missouri area beginning January 3, 2018

Overnight: Flurries, cloudy – steady temperature around 17, southwest wind around 7 mph.
Wednesday: Flurries early am, partly sunny and cold – high near 19 with west wind 8 to 14 mph with winds gusting as high as 21 mph.
Wednesday Night: Mostly clear – low around 2, wind chill values as low as -10 with northwest wind 8 to 11 mph.
Thursday: Sunny/cold – high near 15 with northwest wind around 7 mph.
Thursday Night: Mostly cloudy – low around 7 with northwest wind around 6 mph.
Friday: 20 percent chance of snow in the pm, partly sunny and cold – high near 19.
Friday Night: Partly cloudy – low around 8.
Saturday: Mostly sunny – high near 29.
Saturday Night: Mostly cloudy – low around 25.
Sunday: Chance of snow before early am followed by change of rain, cloudy – high near 42.  Chance of precipitation – 60%.
Sunday Night: Rain likely, cloudy – low around 34, chance of precipitation – 70%.
Monday: A 30 percent chance of rain, mostly cloudy – high near 39.
Monday Night: Partly cloudy – low around 24.
Tuesday: Mostly sunny – high near 33.

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

Delayed Air Quality Index: 01/02/18 11:00 AM CST

  • Good – 40 AQI – Particle Pollution (2.5 microns)
  • Good – 19 AQI – Ozone
  • 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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St Louis Weather Conditions & Forecast, January 3, 2018


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