PHILADELPHIA (WPVI) -- With smoke blowing into the Philadelphia region from the wildfires in Canada, you may have heard a lot about the Air Quality Index or AQI. But what it is, exactly? The Air ...

AUSTIN (KXAN) – With blistering heat this summer, you’ve likely heard a few people say “it’s not the head, it’s the humidity.” Turns out both things are true: it’s called the Heat Index. The heat ...

AUSTIN, Texas — Springtime is short in the South, while summer is long, hot and seemingly never-ending. Transitioning into spring, you'll hear many folks talk about the UV index as the days start to ...

The index rates how clean or polluted the air is each day. The EPA uses this measure to keep tabs on five kinds of air pollutants. The main concern from the wildfire smoke is fine particle pollution, ...

Why is it so miserably hot that you can’t take the trash out without coming back soaked in sweat? Blame humidity and its worsening effect on air temperatures, which is at the heart of what we know as ...

Miranda Marquit has been covering personal finance, investing and business topics for almost 15 years. She has contributed to numerous outlets, including NPR, Marketwatch, U.S. News & World Report and ...