St Louis Weather Conditions & Forecast, January 9, 2018

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

ST LOUIS, MO/January 9, 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: 30°F – -1°C
Humidity: 100%
Wind Speed: SE 5 mph
Barometer: 30.23 in (1024.7 MB)
Dew-point: 30°F – -1°C
Visibility: 2.5 Miles
Wind Chill: 25°F – -4°C
Heat Index: N/A°F – N/A°C

Extended Weather Forecast for the St Louis, Missouri area beginning January 9, 2018

Overnight: Fog & cloudy – low around 31 with light south wind.
Tuesday: Fog early am, cloudy – high near 43 with southeast wind 3 to 7 mph.
Tuesday Night: Chance of drizzle early am, cloudy – low around 39 with southeast wind around 8 mph.
Wednesday: Mostly cloudy – high near 58 with south wind 6 to 11 mph gusting as high as 20 mph.
Wednesday Night: 20 percent chance of rain, after midnight, cloudy – low around 52 with south wind around 10 mph.
Thursday: Rain likely in the am, cloudy – high temperature of 57 with chance of precipitation – 70%.
Thursday Night: Rain likely early pm, then chance of sleet, mixed with snow/freezing rain in the evening, snow likely after 10 pm, cloudy – low around 21 with chance of precipitation – 60%.
Friday: 20 percent chance of snow, mostly cloudy – high near 31.
Friday Night: 30 percent chance of snow after midnight, mostly cloudy – low around 20.
Saturday: Mostly cloudy – high near 25.
Saturday Night: Partly cloudy – low around 10.
Sunday: Mostly sunny – high near 23.
Sunday Night: 20 percent chance of snow, mostly cloudy – low around 11.
M.L.King Day: Mostly sunny – high near 26.

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

Delayed Air Quality Index: Not Available

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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