It’s another hot day that could bring storms. It’s a good day to take it easy outdoors and keep an eye on the sky.

The National Weather Service says the heat index could rise to 100 to 105 today, high enough to pose some health-related concerns, even thought the high will be only around 93. There's a slight chance of rain. Today’s SkyCast is yellow, meaning ozone levels are elevated. (The SkyCast range is green/yellow/orange/red, and orange and red mean alerts have been posted.)

If you’re working outdoors, take breaks in the shade and drink plenty of water. Use the buddy system. Wear loose, light-colored, light-fitting clothing. Eat light, and avoid alcohol and caffeine.

Storms are likely on the way. The Weather Service says there’s an 80 percent chance of thunderstorms – possibly with heavy rain – starting late tonight. The ground is wet, and the entire metro area is under a flash flood watch from 7 p.m. today through 7 a.m. Tuesday.

The Weather Service says a complex of severe thunderstorms is expected to move into northern Missouri tonight and move this way. That could bring heavy rain, probably from around midnight through 7 a.m. Rainfall could total three-fourths of an inch to an inch.

There’s an area – southeast Nebraska, northeast Kansas, most of southern Iowa, almost all of northern Missouri – at an elevated risk of high winds today. The Kansas City area is on the edge of that. There’s some risk of hail and a slight risk of tornadoes for the metro area.

The rest of the week should be cooler, with highs the mid- to upper 80s. The next chance of rain is Thursday.

In hot weather, especially with high humidity, it’s important to know the signs of heat exhaustion and heat stroke:

• Symptoms of heat exhaustion include headache, dizziness, lightheadedness, weakness, irritability, confusion, nausea, vomiting, dark-colored urine, pale and clammy skin and fainting.

Get the person to a cool, shaded area. Stay with the person. Loosen or remove heavy clothing. Someone who is dizzy or lightheaded should lie on his back and elevate their legs 6 to 8 inches. Give a little water – a small cup every 15 minutes. Cool the person off with a fan, a wet cloth or a cool spray mist. If the person doesn’t get better, seek medical help.

• Heat exhaustion can lead to heat stroke, which is more serious. That person may have dry, pale skin; or hot, red skin that looks sunburned; seizures or fits; collapsing and/or passing out; and mood swings such at irritability, confusion or just not making any sense.

Deal with it quickly. Call 911 first.

Most of the treatments, until help arrives, are the same as for heat exhaustion: get to a cool, dry place; loosen the clothing; give water slowly; fan and use other means of cooling, including ice packs under the arms and in the groin.