Why your pharmacy already knows it's going to be hot

Today's Tip: A Personal Heat Plan For Your Address

Most people check the weather app for the high temperature and call it a day. And that's the piece of information that matters the least.

Let me explain…

Deborah Whitfield teaches two morning classes at the community college near her home in Springfield, Missouri. She's 66, still working part-time, and last Tuesday she walked me through her weekly routine. She always looks at the forecast the night before to decide what to wear.

The Weather Channel said the high on Thursday would be 96. She saw the number, picked out a lighter blouse, and figured she'd be fine.

What she didn't know was that the National Weather Service had already issued an Extreme Heat Warning for her county… starting Thursday at 11 a.m. and running through Sunday. The heat index — what the air actually feels like on your body — was forecast to hit 105. Overnight lows would stay in the upper 70s, which means her house wouldn't cool down between days.

She takes a blood pressure medication that makes her more sensitive to heat. She didn't know that either.

Here's what changed everything for her. She asked Grok one question, and in about 30 seconds she had a plan for the whole week… tied to her exact zip code, her exact medication, and the exact times of day she'd be outside walking to and from campus.

Here's the prompt she used.

Grok came back with a table. Thursday and Friday were flagged as red — the highest level on the NWS HeatRisk scale — with a note that her 1 p.m. walk should be moved to 7 a.m. or dropped. Saturday was orange. Sunday was yellow, which meant she could return to her normal routine but should still keep a water bottle with her.

For the medications, it flagged something her pharmacist had told her once and she'd forgotten: hydrochlorothiazide is a diuretic, and it can pull water out of your system faster in the heat. It suggested she talk to her doctor about whether to sip water more often than usual on the warning days.

Then it gave her the address of the Library Center on South Campbell Avenue — five minutes from her house — with hours through Sunday and a note that the city had designated it as a cooling center for the duration of the warning. It cited weather.gov and the Springfield-Greene County Library website.

Now, I know what you're thinking… “I've been getting through hot summers for 60 years. Why do I need a chatbot to tell me it's hot outside?”

Fair question. But heat is different now than it was even ten years ago, and the medication piece is the part most people miss. A lot of common prescriptions — blood pressure pills, antidepressants, allergy medicines, some antibiotics — change how your body handles heat. Your pharmacist knows this. But you're not going to call the pharmacy every time the forecast climbs. Grok will look it all up in one pass, for free, and give you an answer in under a minute… that's the difference.

You don't need to memorize any of this. Copy the prompt above, swap in your own zip code and medications and daily routine, and paste it into Grok before the next hot stretch hits your area.

Deborah did it once on a Tuesday afternoon. She now has a weekly habit.

★ Quick Wins

Skill Builder: Multi-Step Conversations

Most people treat AI like a search engine. Type a question, read the answer, close the tab. That works, but it leaves the biggest advantage on the table.

The real skill is the follow-up. Once you have an answer, the next question can go much deeper — because the AI already knows the context of the first exchange. You don't have to re-explain who you are or what you're trying to do. You just… ask.

Deborah did this with her heat plan. After she got the first reply, she typed a follow-up: “For Saturday specifically, if I do the 1 p.m. walk anyway, what should I bring with me and what should I watch for in the first ten minutes?” The answer came back tighter and more useful than her first prompt could have gotten on its own.

The trick is to think of your AI conversation like a talk with a knowledgeable friend… not a stack of separate questions. Each follow-up sharpens the last answer. Three or four rounds in, you have something genuinely tailored to you — and you didn't have to write a perfect prompt the first time.

You can do this three or four times in a row on the same topic. Each round, the answer gets sharper. And when you're done, if the topic is something you want to save, ask for a one-paragraph summary of everything you just discussed. Copy that into a notes app or an email to yourself.

The follow-up is where AI starts to feel less like a search engine and more like a helpful assistant. Try it on your next hot day, your next doctor's visit prep, or your next home repair question.