Wondering how today’s allergy forecast will affect your seasonal allergies? Are your seasonal allergies so bad that you always check the pollen count and allergy map before you head out?
The Zyrtec® AllergyCast® app helps take some of the guesswork out of managing your allergies. It uses advanced technology developed by Zyrtec allergy experts to predict how your allergy symptoms may make you feel so you can prepare for each day.

Personalized Predictions at Your Fingertips
When you first download the app, we’ll provide you with the pollen level in your area based on your zip code. Each day for 5 days, you’ll track your symptoms in the app.

After 5 days of tracking, we’ll unlock your personalized symptom predictions. This rating, on a scale from Low to Severe, lets you know how your allergy symptoms should really feel that day. The more you track, the smarter and more personalized our predictions become.

In addition to your daily symptom predictions, you’ll get a fresh-looking app that includes these features:
- Weather forecasts and insights for your zip code that updates based on your current location
- An enhanced allergy symptom tracker
- Allergy trends based on your tracked symptoms and treatments
- A list of the top allergens in your area
- A 3-day allergy symptom forecast

What’s New

Version 6.3.1

1. Access AllergyCast without creating an account
2. Bug fixes and enhancements

Ratings and Reviews

3.8 out of 5
124 Ratings

124 Ratings

A lot of options ,

Good Experience

I am a newbie but I am having a good experience so far. I really like the fact that I can take a look at what is high in our area. I am also doing the logging in so that I can determine what I’m most allergic to based on the information that the app will provide me. I’m very excited about this. I will continue to use the app. Unfortunately I’m not a daily user but who knows. I will update my review in a couple of months to see where I stand since most of the concerns seem to be after you’ve been using the app a few months.

Be Kind1 ,

Love this app! Best allergy website or app I have found!

I have used this app for many years, I highly recommend it! Becaus of this app I was able to figure out I’m always sickest when juniper is listed and molds. I was able to tell my allergist who tested for those and more, and it did turn out I was in fact most allergic to those. As we moved, I’ve been allergic to different things and it’s helped me narrow down what causes the most reaction or when I’m on vacation sometimes I will start feeling sick, not sure if I’m coming down with something, often I’ll check the app and find that where I’m at is high in mold or juniper. It’s fun to learn how easily my body detects certain allergens and also more easily help figure out whether I may just be coming down with a cold. I also like the forecast part of it, and have found that to be reliable too. I love this app!

Lauren2114 ,


This app does a great job at forecasting my symptoms and telling me the top allergens in the area. However, there are days that the app doesn’t work at all. Today is one of those days, it’s very frustrating. It says the pollen count is NaN/12 and that my symptom forecast is at the very bottom of the scale when I’ve been having the worst allergies of my life. It won’t even let me log symptoms. I deleted the app, logged in and out, redownloaded it, everything. And it’s still this way. I’d love to know if everyone is having this issue or if it’s just mine. Hopefully they fix it soon so I can get back to being in the know about my allergies.

Developer Response ,

Thank you so much for sharing these details with us! We'll be sure the proper teams hear your comments and investigate the app's performance. If you have any further issues, you can always reach out to us directly by using the Contact Us page of our website.

App Privacy

The developer, McNeil-PPC, Inc, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Contact Info
  • Identifiers

Data Linked to You

The following data may be collected and linked to your identity:

  • Health & Fitness
  • Location
  • Contact Info
  • Identifiers
  • Usage Data

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Identifiers
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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