Chicago hit the 103-degree heat index level only four times from 1979 to 1998.

从1979年到1998年，芝加哥只有四次达到103华氏度的高温指数。

And the region faces heat index is in the triple digits this coming week.

本周，该地区的酷热指数将达到三位数。

Temperature plus humidity equals the heat index, how hot the weather actually feels to you.

温度加湿度等于热量指数，也就是你实际感觉到的天气有多热。

And across the South, half-a-dozen states expected heat index readings in the triple digits.

在整个南方，六个州预计高温指数将达到三位数。

It goes beyond the heat index taking into account sun angle, cloud cover and wind speed.

考虑到太阳的角度，它超过了热量指数，云量和风速。

Temperatures in Louisiana have been near 100 degrees this summer, with heat indexes reaching as high as 120 degrees.

路易斯安那州今年夏天的气温接近100华氏度(37.8摄氏度)，高温指数高达120华氏度(48.9摄氏度)。

The temperature hit 106 degrees, and the heat index which is like wind chill — how it feels to people, was 126 degrees.

当时的气温达到了 106 华氏度（41 摄氏度），热指数（类似于风寒指数）——体感温度则达到了 126 华氏度（52 摄氏度）。

It's called the heat index which you hear us talk about during the summer season and is when your body has trouble cooling down.

也就是所谓的酷热指数，这个术语你应该在夏季节目里听过，它是当你的身体无法冷却的时候出现的。

She uses this heat index called the mean radiant temperature, which is basically how much heat is crashing into your body from the sun, from the air, from all the reflected surfaces.

她使用这个称为平均辐射温度的热指数，它基本上是有多少热量从太阳，空气， 所有反射表面撞击你的身体。