NOAA's National Weather Service Heat Index

I recently read the article "Beat the Heat" in RW magazine Aug 2008 issue. It provided really good advice on how to run in hot weather. However, I was quite amused with the heat/humidity conditions that are considered dangerous to exercise.

Here is the NOAA's National Weather Service Heat Index:


The temperature is in fahrenheit. So converting to celsius, 88F is equivalent to 28C, and 86F is equivalent to 27C. With Singapore's humidity of high 80s to low 90s (averege of 84%), the National Weather Service Heat Index is saying that we run in "extreme caution" to "danger" territory!