Frizz Forecast Index – The App That Can Predict a Bad Hair Day!

By Camelia Smith
Published 05 Apr 2021

Frizz Forecast Index – The App That Can Predict a Bad Hair Day!

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The humidity is high today, and the Frizz Forecast Index is 10/10 RED.

Unfortunately, today’s a ponytail day!

My daily hair routine usually depends on what the weather is gonna look like and how much humidity is in the air.

Thanks to AccuWeather’s reliable frizz forecast, I can plan my hairstyle accordingly to stay fabulously weatherproof without any unexpected humidity-induced frizz.

If you haven’t discovered this nifty web app yet, I highly recommend you check it out. It will seriously help you decide how to style your hair for the day before you step outside.

I’ve been using it for a while, and I give it a 9/10 for its reliable frizziness prediction.

So let me show you how to use it to reveal a full 12-day frizz risk forecast.

The AccuWeather Frizz Forecast Index

Head over to and type in your location or zip code:

At first glance, you won’t see the Frizz Index chart, but here’s the trick to get the information:

Change the word “weather-forecast” to “hair-day-weather” in the address bar and hit Go.

From this:

check frizz hair forecast with zip-code

To this:

weather index for frizzy hair prediction

And voila! You have a 12-day hair forecast.

If you’re going on holiday abroad, you can also use it to check the humidity and frizz forecasts for your destination.

What is The Frizz Index and How Does It Work?

The frizz index is a color-coded forecast ranging from a scale of 1 to 10 to predict how frizzy your hair will get based on your local area weather conditions.

The index effectively illustrates a frizz factor, which predicts the probability of a bad hair day.

Frizz Factor Explained

The frizz factor is a measure of frizz level that can be expected under various conditions for any hair type.

Developed by, the formula correlates atmospheric humidity measurements, dew points, heat, cold, wind, and precipitations to accurately indicate whether you’re likely to experience frizzy and static hair.

So let’s take a more detailed look at how this smart weather forecast does it.


Hair is sensitive to humidity.

Therefore, the humidity indicator is one of the main factors used to calculate the Frizz Index.

Humidity describes the concentration of water vapor or water molecules in the atmosphere.

Because hair is porous like a sponge – if it’s not adequately hydrated, it tends to soak up moisture from the humid air. As a result, it doubles back on itself at a molecular level, swelling and disrupting the cuticles to cause frizz.

Dew Point

Dew point refers to the absolute amount of water in the air compared to what the air can hold. The higher the dew point is, the stickier it will feel outside.

We know that humidity makes the hair frizzy, but dew point is a more accurate measure to understand how fast the moisture content can affect your hair.

For example:

Let’s look at the two scenarios below:

  • Location A: 90% Humidity at 35°F heat and 2°F Dew point
  • Location B: 60% Humidity at 70°F heat and 21°F Dew point

Which location do you think will affect your hair most?

The answer is Location B because of its higher dew point.

Humidity with a higher dew point is like walking into a sauna!


High gusts of wind can whip your hair into a frazzled mess, sap moisture out of your strands, and create tangles and snags.

That’s why it’s essential to plan your hairstyle accordingly.

If the wind forecast is high, it’ll be better to have a sleek topknot rather than having your hair down.


No one wants to get caught unexpectedly in a downpour with perfectly tousled waves or the smoothest of blowouts.

Rain can throw any hairstyle into a disheveled mess.

By factoring all these crucial weather elements, the frizz index uses a clever algorithm to calculator the frizz risk factor for you.

Therefore, you don’t have to look at all these individual readings to make up your mind.

And let’s be honest, how many times have you checked the weather forecast for rain and still ended up with frizzy hair because you failed to check the dew point forecast!

Yep! I’ve been there many times.

Other Frizzy Hair Prediction Apps to Check

Amazon Alexa Frizz Forecast

alexa ask frizz forecasting

Ask Alexa for a frizz forecast for the day, and you’ll get hilarious answers like:

  • Straight hair. Don’t care. Have a great hair day!
  • One does not simply straighten their hair every day. Only on days like today
  • With enough hairspray, you’ll avoid a frizz-aster
  • Go on, let your hair down. Today is perfect for curls
  • Love is in the hair. Today brings prime curl conditions
  • There’s a 100 percent chance of a ponytail
  • You know what they say. Messy bun and getting stuff done
  • This frizz shall pass.

NaturallyCurly App

The NaturallyCurly app seems more tailored for curly hair dew points, but it’s a bit clunky at times.

It’s a web-based app that asks you to select your curl type and input your zip code to give you information on what kind of products to use in your hair for the day.

Are You Using A Frizz-O-Meter Yet?

Make the most of the excellent Frizz Index forecast to prepare yourself for upcoming weather-related coiffure conundrums.

Bookmark the AccuWeather hair day weather forecast app on your phone’s home screen, and you’ll never have a bad hair day!