South Florida Is Running Hot, and Your Pool Feels It First

Published August 19, 2026

NBC6 reported this week that South Florida is pushing up against all-time heat records. Miami was forecast to reach 98 degrees, which would top the daily record of 96 set in 2022, and Fort Lauderdale was headed for 97, just under the 98-degree record for August 18 that has stood since 1924. Add the humidity and the heat advisory put feels-like temperatures as high as 112. Part of what's driving it is westerly wind flowing across the peninsula and warming up on the way, which keeps the Atlantic sea breeze from doing its usual job of cooling the coast. You can read the full NBC6 report here.

For anyone with a pool in Coral Springs or Tamarac, a stretch like this is more than uncomfortable. It changes what your water needs, and it changes it faster than a normal week.

Chlorine Burns Off Faster in Extreme Heat

Chlorine is consumed by two things that are both running at full tilt right now: heat and UV. Warmer water speeds up the chemical reactions that use chlorine, and direct sunlight breaks free chlorine down over the course of the day. Cyanuric acid helps shield it, but there's a ceiling on that protection, and a 97-degree afternoon with a high sun angle pushes right past what a typical week demands.

The practical result: the dose that held your water perfectly balanced last Tuesday may be short by Thursday. Not because anything went wrong, but because the conditions changed underneath it. This is the core reason we don't run a fixed weekly amount. Live digital readings from your pool, your pool's actual volume, the week's weather, and the shift in your water since the last visit all feed our AI dosing system, so the number is calculated for the week you're actually in, not the average week.

Warm Water Is Exactly What Algae Wants

Algae thrives in warm, sunlit water with weak sanitizer. A heat wave delivers all three at once. Water in the mid-80s or higher gives algae a growth environment it doesn't get in January, and if chlorine has drifted low from the burn-off above, there's nothing holding it back. That's how a clear pool goes hazy in a couple of days and green by the weekend.

The early signal is usually not color. It's a slight dullness to the water, or a spot on the steps or behind the ladder that feels slick. If you catch it there, it's a chemistry correction. If you catch it after it blooms, it's a green-to-clean job.

Evaporation and Heavier Use Stack on Top

Heat and wind together pull water out of the pool faster than usual. You may notice you're topping off more often than you were a few weeks ago. What leaves is the water. The salt, calcium, cyanuric acid, and everything else dissolved in it stays behind and gets more concentrated. So your balance drifts even before chlorine consumption enters the picture, and then refilling with tap water shifts it again in the other direction.

Meanwhile, when it's 112 outside, the pool becomes the main way the family gets through the day. More swimmers means more sunscreen, body oils, and organic debris in the water, all of which consume chlorine, arriving precisely when the chemistry is already under the most strain of the year.

This Is the Week Fixed Dosing Falls Apart

Any of these four on its own is manageable. Together they compound, and they compound in the same direction. That's why a "same amount every Tuesday" routine works fine in March and quietly fails in August. It isn't reacting to anything: not the heat, not the water level, not the swimmer load, not what your readings actually say today.

If your pool is holding up fine, it's still worth walking out and taking a look at the water level and the corners where circulation is weakest. And if you'd rather not track it yourself through a stretch like this, our weekly maintenance service handles the readings, the dosing math, and the equipment check on every visit, and you get a photo and service report each time so you can see exactly what your pool looked like and what it got.