Heat Wave
Hot Weather
Heat and humidity can create life threatening conditions during the Summer. Read more about it below. 
About the Heat Index 
When the Summer months arrive in Arkansas, the heat can become unbearable at times. The question is:  How hot does it get and how should you protect yourself from the heat?
High temperatures during the Summer are often in the 90s...with 70s at night. Now let's factor in the humidity. With more humidity, it feels warmer than it actually is.  
HEAT INDEX °F
  RELATIVE HUMIDITY (%)
TEMP (°F) 40 45 50 55 60 65 70 75 80 85 90 95 100
110 136                        
108 130 137                      
106 124 130 137                    
104 119 124 131 137                  
102 114 119 124 130 137                
100 109 114 118 124 129 136              
98 105 109 113 117 123 128 134            
96 101 104 108 112 116 121 126 132          
94 97 100 103 106 110 114 119 124 129 135      
92 94 96 99 101 105 108 112 116 121 126 131    
90 91 93 95 97 100 103 106 109 113 117 122 127 132
88 88 89 91 93 95 98 100 103 106 110 113 117 121
86 85 87 88 89 91 93 95 97 100 102 105 108 112
84 83 84 85 86 88 89 90 92 94 96 98 100 103
82 81 82 83 84 84 85 86 88 89 90 91 93 95
80 80 80 81 81 82 82 83 84 84 85 86 86 87
A Heat Index Chart is shown above. For an image, click here.
The "heat index" is considered excessive when temperature and humidity combine to make it feel like105 degrees or greater.  For example, using the chart above...a temperature of 96 degrees with a relative humidity of 50% net a heat index of 108 degrees. Other than the chart, try using our meteorological calculator by clicking here.

When heat index values meet or exceed 105 degrees for several hours over a fairly large area...the National Weather Service will usually issue a Heat Advisory.

When heat index values reach 115 degrees for one hour over a fairly large area...an Excessive Heat Warning may be posted.

Current Heat Index Values
NOTE: For Heat Index values, look for HX in REMARKS. If HX is N/A (not available), then there is data missing such as temperature (TMP) or relative humidity (RH)...or HX is below 85 degrees.
Could not read file!