From the National Weather Service in St. Louis - forecast zone for St. Louis County:
Tonight...Mostly clear. Low around 70. Light wind.
Monday...Hot and humid. Mostly sunny. High in the mid 90s. Highest heat index readings of around 100 late in the afternoon. Southwest wind around 10 mph.
Monday Night...Clear. Low in the mid 70s. South wind around 10 mph in the evening becoming light after midnight.
Tuesday...Hot and humid. Sunny. High in the upper 90s. Highest heat index readings of around 100 in the afternoon. South wind around 10 mph.
Tuesday Night...Mostly clear. Low in the mid 70s. South wind around 10 mph.
Wednesday...Hot and humid. Mostly sunny. High in the mid 90s. Highest heat index readings of around 100 in the afternoon.
Wednesday Night...Mostly clear. Low in the mid 70s.
Thursday...Mostly sunny. High in the mid 90s.
Thursday Night...Partly cloudy. Low in the lower 70s.
Friday Through Saturday...Partly cloudy with a 30 percent chance of thunderstorms. High around 90. Low in the lower 70s.
...HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT WEDNESDAY...
MADISON IL-ST. CLAIR IL-ST. CHARLES MO-ST. LOUIS MO-
ST. LOUIS CITY MO-
INCLUDING THE CITIES OF...EDWARDSVILLE...BELLEVILLE...
ST CHARLES...ST LOUIS
328 PM CDT SUN JUN 5 2011
A HEAT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT WEDNESDAY.
* TIMING...HIGH HEAT INDEX VALUES CAN BE EXPECTED EACH AFTERNOON
* HEAT INDEX VALUES...MAXIMUM HEAT INDEX VALUES AROUND 100
DEGREES CAN BE EXPECTED FROM MONDAY THROUGH WEDNESDAY.
* IMPACTS...THE EFFECTS OF HEAT ARE CUMULATIVE. SEVERAL DAYS OF
HEAT INDEX VALUES AROUND 100 ARE JUST AS DANGEROUS AS ONE OR
TWO DAYS WITH MORE EXTREME HEAT. HEAT RELATED ILLNESSES ARE A
REAL THREAT ESPECIALLY FOR SMALL CHILDREN...THE ELDERLY...AND
OTHER PEOPLE WITH PREEXISTING HEALTH CONDITIONS.
A HEAT ADVISORY IS ISSUED WHEN HIGH TEMPERATURE AND HUMIDITY
LEVELS ARE EXPECTED TO MAKE IT FEEL LIKE IT IS 100 DEGREES OR
GREATER FOR FOUR OR MORE CONSECUTIVE DAYS. PEOPLE IN THE ADVISORY
AREA ARE ADVISED TO AVOID PROLONGED WORK IN THE SUN...OR IN
POORLY VENTILATED AREAS. ALSO...KEEP PLENTY OF LIQUIDS ON HAND
AND TRY TO STAY IN AN AIR CONDITIONED ENVIRONMENT.
PEOPLE IN THE ST. LOUIS METROPOLITAN AREA CAN GET INFORMATION
ABOUT COOLING CENTERS OR ENERGY ASSISTANCE RELATED TO THE
EXCESSIVE HEAT BY CALLING THE UNITED WAY OF GREATER ST. LOUIS AT
800-427-4626...OR IF CALLING FROM A LAND LINE PHONE DIAL 2-1-1.
YOU CAN ALSO CALL COOL DOWN ST. LOUIS AT 314-241-7668.