uv-index

This module provides an easy way to lookup any location in the world and get the UV index for a specific date. This module is only capable of providing maximum UV index values for a given location and date - it does not provide hourly data.

The UV index climatology is a measure of the intensity of ultraviolet (UV) rays from the Sun received on average during a month. The index is a scale of 0 to 16+, with 0 representing minimal UV exposure risk and values higher than 11 posing an extreme risk.

Data is derived from the NASA Earth Observations and repackaged.

Performance

The module is designed to be fast and efficient. The data is stored in a binary format and is loaded into memory when the module is initialized. Memory footprint is expected to be around 1.5MB in total.

Usage

import initUvIndex from 'uv-index';

const lookup = await initUvIndex();
const uv = lookup(new Date('2025-01-15'), -33.86785, 151.20732);

References

• https://neo.gsfc.nasa.gov/view.php?datasetId=AURA_UVI_CLIM_M

Hourly Data

This module provides UV Index values at solar noon - maximum value for the day. If you need hourly data, one of the possible ways to achieve it is to build a simple model and interpolate the values. Knowing sunrise, sunset, and solar noon times, you can estimate the UV Index values for each hour of the day.

This module was developed and maintained by WeatherPoint, a leading provider of cutting-edge solutions for weather forecasts. For more information about WeatherPoint and their services, visit their website at https://weatherpoint.com.au/ or check out their other open-source projects.