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St Louis Weather Conditions and Forecast, November 20, 2017

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

Current Weather Conditions

Temperature: 36°F – 2°C
Humidity: 57%
Wind Speed: S 8 mph
Barometer: 30.12 in (1020.6 MB)
Dew-point: 22°F – -6°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 November 20, 2017

Today: Partly sunny, gradually turning sunny – high near 63 with south wind 7 to 16 mph gusting as high as 23 mph.
Tonight: Increasing clouds – low around 44 with south wind 9 to 11 mph.
Tuesday: Mostly sunny – high near 56 with southwest wind 8 to 10 mph northwest in the pm.
Tuesday Night: Mostly clear – low around 25 with north wind 5 to 9 mph.
Wednesday: Sunny – high near 42 with northwest wind 3 to 6 mph.
Wednesday Night: Partly cloudy – low around 28.
Thanksgiving Day: Sunny – high near 51.
Thursday Night: Mostly clear – low around 35.
Friday: Sunny – high near 61.
Friday Night: Partly cloudy – low around 46.
Saturday: Sunny – high near 57.
Saturday Night: Mostly clear – low around 34.
Sunday: Sunny – high near 45.

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

Delayed Air Quality Index: 11/19/17 2:00 PM CST

  • Good – 31 AQI – Ozone
  • Good – 20 AQI – Particle Pollution (2.5 microns)
  • 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


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St Louis Weather Conditions and Forecast, November 20, 2017


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