St Louis Weather Conditions & Forecast, January 11, 2018

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

ST LOUIS, MO/January 11, 2018 (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


Temperature: 57°F – 14°C
Humidity: 100%
Wind Speed: S 9 mph
Barometer: 29.97 in (1007.8 MB)
Dew-point: 57°F – 14°C
Visibility: 8 Miles
Wind Chill: N/A°F – N/A°C
Heat Index: N/A°F – N/A°C

Extended Weather Forecast for the St Louis, Missouri area beginning January 11, 2018

Overnight: 30 percent chance of rain, cloudy – low around 55 with south wind around 11 mph gusting as high as 20 mph.
Thursday: Rain with temperature rising to near 61 by noon, then falling to around 41 during the remainder of the day with south wind 9 to 16 mph becoming northwest in the afternoon; winds gusting as high as 25 mph with chance of precipitation – 80%.
Thursday Night: Rain, snow & freezing rain, mixed with sleet before midnight, then chance of snow between midnight and 2 am, cloudy – low around 15 with northwest wind 17 to 20 mph gusting as high as 31 mph with chance of precipitation – 70%.
Friday: Mostly sunny – high near 25 with north wind 9 to 13 mph gusting as high as 25 mph.
Friday Night: Mostly cloudy, with a low around 15 with north wind around 9 mph.
Saturday: Mostly cloudy – high near 23.
Saturday Night: Mostly clear – low around 10.
Sunday: Partly sunny – high near 27.
Sunday Night: 30 percent chance of snow, mostly cloudy – low around 21.
M.L.King Day: 50 percent chance of snow in the am, partly sunny – high near 26.
Monday Night: Partly cloudy – low around 5.
Tuesday: Mostly sunny/cold – high near 17.
Tuesday Night: Mostly clear – low around 6.
Wednesday: Mostly sunny – high near 27.

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

Delayed Air Quality: 01/10/18 10:00 PM CST

  • Good – 19 AQI – Particle Pollution (2.5 microns)
  • Good – 16 AQI – Ozone
  • Good – 5 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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