What is the OpenUV free tier limit?

The OpenUV free tier allows for up to 50 API calls per day. This limit resets every 24 hours.

How much does the OpenUV Developer Plan cost?

The OpenUV Developer Plan costs $5 per month and includes an allowance of 10,000 API calls per month.

What happens if I exceed my OpenUV API call limit?

If you exceed your API call limit on the free tier, further requests will be blocked until the daily limit resets. For paid plans, exceeding limits may lead to service interruptions or require an upgrade, though specific overage policies are not detailed on the public pricing page.

Does OpenUV offer an enterprise-level plan?

Yes, OpenUV offers an Enterprise Plan with custom pricing and call limits, designed for large-scale operations and specific integration needs.

How does OpenUV's pricing compare to general weather APIs?

OpenUV's pricing is highly competitive for its specialized UV data, with a lower entry-level paid plan than many broader weather APIs like OpenWeatherMap or Weatherbit, which often start at higher price points for a wider range of data.

Can I upgrade or downgrade my OpenUV plan at any time?

Typically, API providers like OpenUV allow users to upgrade or downgrade plans as their usage needs change, though specific terms should be confirmed on their official pricing or account management pages.

What data is included in OpenUV's API calls?

OpenUV API calls provide access to current UV Index data, UV forecasts, and sun protection times for specified geographical coordinates.

OpenUV Pricing: API Plans and Cost Examples (2026)

Pricing overview

OpenUV provides access to UV index data, forecasts, and sun protection times through a tiered API pricing model. The service is designed to accommodate a range of users, from individual developers using the free tier to businesses requiring high volumes of data. The core pricing structure is based on the number of API calls made per month, with different plans offering varying call allowances and features. Users can find detailed information on the official OpenUV pricing page.

The pricing model is structured to scale with usage, ensuring that smaller projects can begin without significant upfront costs, while larger applications can access higher call volumes at predictable monthly rates. This approach is common among API providers, as it allows for flexible resource allocation and cost management based on actual consumption. For instance, similar usage-based pricing models are employed by services like Google Cloud Platform's API services, where costs are often tied to specific API calls or data processed.

Plans and tiers

OpenUV offers several plans, each tailored to different usage requirements. The primary distinction among these plans is the monthly API call limit and the associated monthly fee. All plans generally provide access to the same core UV Index data, forecasts, and sun protection time endpoints, with the main difference being the capacity for requests.

Plan	Monthly Price	Key Limits	Best For
Free Tier	$0	50 API calls/day	Testing, personal projects, very low-volume applications
Developer Plan	$5/month	10,000 API calls/month	Small applications, hobby projects, startups with moderate usage
Startup Plan	$25/month	50,000 API calls/month	Growing applications, small businesses, mobile apps with increasing user base
Business Plan	$100/month	250,000 API calls/month	Medium-sized enterprises, applications with significant user traffic
Enterprise Plan	Custom	Custom API calls/month	Large-scale operations, high-volume data needs, specific integration requirements

The Developer Plan serves as the entry point for paid services, providing a substantial increase in daily call allowance compared to the free tier. As applications grow and require more frequent data retrieval, users can upgrade to the Startup or Business plans to accommodate higher request volumes. The Enterprise Plan is designed for organizations with unique requirements, offering custom pricing and potentially tailored service level agreements (SLAs), similar to how large-scale cloud providers manage AWS Enterprise Support plans.

Free tier and limits

OpenUV offers a free tier that allows users to make up to 50 API calls per day. This free access is suitable for initial development, testing, and very low-volume personal projects. The daily limit resets every 24 hours. The free tier provides full access to the core UV Index data, allowing developers to build and test functionality without financial commitment. This approach is typical for many API providers, enabling developers to evaluate the service before committing to a paid plan. For example, Cloudflare's API documentation describes various usage tiers, often including free access for basic services.

While the free tier is generous for initial exploration, it is important for developers to monitor their usage to avoid hitting the daily limit, which can result in temporary service interruptions until the limit resets. For applications that require consistent, higher-volume access, transitioning to a paid plan is necessary. The free tier operates on a simple request-response model, providing current and forecasted UV index data for specified geographical coordinates. This allows for basic integration into applications that might display the UV index to users or trigger simple alerts based on UV levels.

Real-world cost examples

To illustrate OpenUV's pricing, consider several scenarios based on typical application usage:

Personal Weather Widget (Low Usage):
- An individual developer creates a personal dashboard or smart home integration that fetches the UV index for their location once every hour.
- Daily calls: 24 calls.
- Monthly calls: 24 calls/day * 30 days = 720 calls/month.
- Cost: This usage falls well within the 50 API calls/day limit of the Free Tier, resulting in a cost of $0 per month.
- Even if the user checks the UV index more frequently, say every 30 minutes, that would be 48 calls/day (1440 calls/month), still within the free tier's daily limit.
Small Mobile App (Moderate Usage):
- A mobile application provides UV index information for a user's current location upon opening the app. Assume 100 daily active users, each opening the app 3 times a day, triggering one API call per open.
- Daily calls: 100 users * 3 calls/user = 300 calls/day.
- Monthly calls: 300 calls/day * 30 days = 9,000 calls/month.
- Cost: This usage exceeds the free tier's daily limit (50 calls/day) but fits within the 10,000 calls/month of the Developer Plan. The cost would be $5 per month.
- If the app grew to 150 daily active users with the same usage pattern, it would generate 13,500 calls/month, requiring an upgrade to the Startup Plan.
Outdoor Activity Planner (Growing Usage):
- A web application helps users plan outdoor activities by providing UV forecasts for multiple locations. It processes 1,000 requests per day, with each request potentially involving multiple UV data points (e.g., current and hourly forecast for a week). Assume an average of 1.5 API calls per user interaction.
- Daily calls: 1,000 requests * 1.5 calls/request = 1,500 calls/day.
- Monthly calls: 1,500 calls/day * 30 days = 45,000 calls/month.
- Cost: This volume exceeds the Developer Plan (10,000 calls/month) and fits within the 50,000 calls/month of the Startup Plan. The cost would be $25 per month.
- If the application experiences a surge in popularity, reaching 2,000 requests per day (90,000 calls/month), it would necessitate upgrading to the Business Plan.
Enterprise Health Monitoring System (High Usage):
- A large-scale health monitoring system integrates OpenUV data to provide personalized sun safety recommendations for a large user base across multiple regions. The system makes 8,000 API calls per day on average, processing real-time data for various user segments.
- Daily calls: 8,000 calls.
- Monthly calls: 8,000 calls/day * 30 days = 240,000 calls/month.
- Cost: This usage falls within the 250,000 calls/month limit of the Business Plan. The cost would be $100 per month.
- Should the system expand further, requiring over 250,000 calls per month, an Enterprise Plan with custom pricing would be necessary.

These examples demonstrate how OpenUV's tiered pricing directly correlates with the volume of API requests. Developers and businesses can select a plan that aligns with their current operational needs and scale up as their application's user base or data requirements grow. Monitoring API usage is critical for cost management, as exceeding plan limits without upgrading can lead to service interruptions or unexpected charges if an overage policy is in place (though OpenUV's public pricing page does not detail overage specifics for standard plans).

How the pricing compares

OpenUV's pricing model is competitive within the weather and environmental data API market, particularly for its specialized focus on UV index data. When comparing OpenUV to alternatives like OpenWeatherMap, Tomorrow.io, and Weatherbit, several factors come into play, including the scope of data offered, specific features, and overall cost structure.

OpenWeatherMap: Offers a broader range of weather data beyond just UV, including current weather, forecasts, and historical data. Its free tier typically allows for 1,000 calls/day for current weather and 60 calls/minute for forecasts, which is significantly higher than OpenUV's free tier for general weather data, but OpenUV specializes in UV. Paid plans also scale based on calls, with various tiers for different data types. For instance, the OpenWeatherMap pricing page shows plans beginning around $40/month for extensive data access, which is higher than OpenUV's entry-level paid plan for its specialized data.
Tomorrow.io: Known for its hyper-local, minute-by-minute forecasts and advanced weather models. Tomorrow.io's API is typically positioned for more demanding enterprise applications, with pricing often reflecting its advanced capabilities and higher data granularity. While it also offers UV data, its overall pricing structure can be higher due to the breadth of its offerings. Their pricing is often custom or starts at higher tiers for commercial use, making it less accessible for small projects than OpenUV's entry-level plans.
Weatherbit: Provides a comprehensive suite of weather APIs, including current, forecast, and historical data, as well as specialized indices like UV. Weatherbit offers a free tier with 500 API calls/day, which is more generous than OpenUV's free tier for general weather data. Their paid plans, as detailed on the Weatherbit pricing page, start at around $35/month for 100,000 calls, offering a broader array of data but at a higher entry price point compared to OpenUV's Developer Plan for UV-specific data.

OpenUV stands out for its focused approach to UV data, which can be advantageous for applications where UV index is the primary requirement. Its lower entry-level paid plan ($5/month for 10,000 calls) makes it a cost-effective choice for developers and small businesses specifically needing UV information without the overhead of broader weather API services. While alternatives may offer more extensive weather data, OpenUV's specialization and accessible pricing for UV data position it as a strong contender for niche applications in health monitoring, outdoor activity planning, and skincare.