St. Louis Weather Conditions and Forecast, September 20 am

St. Louis Weather Conditions @ St. Louis Lambert International Airport and Air Quality Index for St. Louis

ST. LOUIS, MO/September 20, 2017 (STL.News) St. Louis weather conditions @ St. Louis Lambert International Airport at 4:51 a.m at Latitude: 38.75°N – Longitude: 90.37°W – Elevation 604 feet. CDT as reported by the National Weather Service.

Current Weather Conditions – Saint Louis, Missouri

Sky: FAIR
Temperature: 74°F – 24°C
Humidity: 85%
Wind Speed: South 6 MPH
Barometer: 29.87 in (1010.2 MB)
Dew-point: 69°F – 21°C
Visibility: 10.00 Miles
Wind Chill: N/A°F – N/A°C
Heat Index: N/A°F – N/A°C

Extended Weather Forecast for St. Louis, MO – September 20th

Today – Sunny – high near 94.  Heat index values as high as 100.  South wind 6 to 9 mph.
Tonight – Mostly clear – low around 73.  South wind 5 to 9 mph becoming light after midnight.
Thursday – Sunny – high near 94.  South wind 3 to 7 mph.
Thursday Night – Mostly clear – low around 72. South wind 3 to 6 mph.
Friday – Sunny – high near 94.  South wind 3 to 6 mph.
Friday Night – Mostly clear – low around 70.
Saturday – Sunny – high near 93.
Saturday Night – Mostly clear – low around 69.
Sunday – Mostly sunny – high near 91.
Sunday Night – Mostly clear – low around 67.
Monday – Mostly sunny – high near 88.
Monday Night – Partly cloudy – low around 65.
Tuesday – 30 percent chance of showers/thunderstorms.  Mostly sunny – high near 84.

Air Quality Index for St. Louis, MO – (A.Q.I.)

Delayed Air Quality Index: 09/20/17 12:00 AM CDT

  • Moderate – 74 AQI – Particle Pollution (2.5 microns)
  • Good – 34 AQI – Ozone
  • Good – 18 AQI – Particle Pollution (10 microns)

Agency: St. Louis Metropolitan Area (American Lung Association)
Last Update: Wed, 20 Sep 2017 12:45:09 CDT

Air Quality Index

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.

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Source: Weather from National Weather Service @ Forecast.Weather.Gov – AQI from AirNow.Gov – STL.News publisher, St. Louis Media, LLC

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