uv2Day app

uv2Day app

  • An app to show ultraviolet index (UVI) information all over New Zealand, Australia, South Pacific and Antarctic – its peak value and it's progression throughout the day at your current location. The UVI measures levels of ultraviolet radiation from the sun.
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uv2Day app By Jeremy Burke


  • UVI information. 
  • Alerts – when standard UVI thresholds are exceeded.
  • When to take more care in the sun at a location of choice.
Country of origin New Zealand
Clinical review 

4 star review

Read a clinical review of this app below.

Security and privacy Does the app:
  • Collect medical information? No
  • Require a login? No
  • Have password protection? No
  • Have a privacy policy? Unsure
  • Require internet access to use? Yes

Read more about safety and security when using apps.

Tips to improve your privacy and security [PNG, 200 KB] Health Navigator Charitable Trust, NZ
Staying safe online(external link) Netsafe, NZ

Cost Free
Advertisements This app contains no ads.
How to get the app

The uv2day app helps users to know when to take more care in the sun by providing information about the UV index during the day at a location of choice. The app provides information on the UV index (UVI) forecasts throughout the day at your specified location. You can also access information on other selected locations within New Zealand, Australia, South Pacific and Antarctic regions. The app is useful for planning outdoor activities throughout the year and has a specific New Zealand ski region section. It alerts you when the UVI is 3 or above and gives corresponding information on the exposure period within which skin damage can occur. It prompts you to avoid exposure or use skin protection (slip, slop, slap and wrap(external link)). Data in the app is provided by NIWA (National Institute of Water and Atmospheric). For a more detailed description of the app, see Google Play(external link) or iTunes(external link) and for a detailed review, see reviews below.


Includes behavioural messages.

Provides education on UV index in a graph format – easy to understand.

Has local region and town-specific info.

A possible improvement is more detail on the types of sun protection required for the different UVI readings. For example, how often to apply sunscreen, what strength SPF is recommended or tips on how to cover up.


Clinical review

4 star review

: Angela Lambie, Pharmacist
Date of review: 
December 2023
Version: 22.1
Comments: uv2day helps users to know when to take more care in the sun by providing information about the UV index during the day at a location of choice. It is useful for people who are interested in knowing the UV index at their location so they can be prepared if they are going outside during periods of high UV and reduce skin damage from the sun.
Safety concerns: None
New Zealand relevance: Yes

Clinical review

4 star review

: Brendon McIntosh, Community Pharmacist, Māori Pharmacist Association
Date of review: 
December 2017
Comments: Very basic app. Not very aesthetically pleasing but it gets the job done in regards to having up to date UVI readings. The explanation about UVI is very good and easy to understand.  Useful for any Kiwi planning on being outdoors this summer. Great that it has local region and town-specific info.
The fact that it doesn’t have temperature is a big plus as it stops people thinking that the temperature affects the intensity/burn factor. It could be a cool day but the UVI could still indicate a need for sun protection so it is good in this aspect. This app is very useful in the Community Pharmacy setting. It would be a good value-add conversation to have with people coming in and buying sunscreen 
Safety concerns: None. As the info comes directly from NIWA it is pretty reliable.
New Zealand relevance: Very relevant

User review

5 star review

: Kathryn, Palmerston North, NZ 
Date of review: February 2018
Comments: Easy to understand, quick guide. Anyone can use. It's a 'must have' on your phone.

Calculation of UVI for smartphone apps(external link) NIWA
UV radiation(external link) Health Promotion Agency, New Zealand  
Buller DB, Berwick M, Lantz K, et al. Smartphone mobile application delivering personalized, real-time sun protection advice – a randomized clinical trial.(external link) JAMA Dermatol. 2015 May;151(5):497-504.


A smartphone app for summer sun protection [PDF, 222 KB] Cancer Society of NZ, 2017

Disclaimer: The NZ Health App Library is a free consumer service to help you decide whether a health app would be suitable for you. Our review process is independent. We have no relationship with the app developers or companies and no responsibility for the service they provide. This means that if you have an issue with one of the apps we have reviewed, you will need to contact the app developer or company directly.

Credits: Healthify editorial team. Healthify is brought to you by Health Navigator Charitable Trust.