The image shown to the left is one of our climatological sites that constitute the UV radiation monitoring network within the USDA UV-B Monitoring and Research Program. Each site has a suite of instruments that measure downwelling radiation in various agriculturally important regions between 280 and 1040 nanometers. Detailed information about each instrument and each location can be found under the above Monitoring Network link.

UV Index for May 26, 2016 Local Time
Graph of UV Index is not available for this location

Latest News
May 2016

Dr. Melina Zempila is the leading author of two poster presentations at the 2016 European Space Agency Living Planet Symposium, in Prague, Czech Republic, May 9-13 2016. The posters’ abstract titles are Long-term Comparisons of OMI surface UV irradiances to a NILU-UV multi-filter radiometer in Thessaloniki, Greece. and CIE, Vitamin D and DNA damage: A synergetic study in Thessaloniki, Greece.

Dr. Zhbin Sun and Dr. Maosi Chen will be attending the DSSAT 2016 International Training Program Assessing Crop Production, Nutrient Management, Climatic Risk and Environmental Sustainability with Simulation Models at the University of Georgia, May 16, 2016 thru May 21, 2016.

Dr. Zhibin Sun is co-author on a GIS and Technology Poster, at the Association of American Geographers annual meeting, in San Francisco, California, March 28 - April 1 2016. The posters abstract title is Spatiotemporal Downscaling of Erythemal Ultraviolet Radiation Using Geostatistics.

Mike Coughenour traveled to Reston, Virginia to participate in the annual winter business meeting of AmericaView, March 1 and 2. This meeting facilitates interactions with other state's participating in AmericaView.

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Picture of our instruments at various locations
North Dakota
46.90 N
96.81 W


The UV-B Monitoring and Research Program (UVMRP) is a data collection and research program of the United States Department of Agriculture (USDA), headquartered at Colorado State University in Fort Collins, Colorado.

The UVMRP supports two unique and complimentary program components:

Integrated Agricultural Impact Assessment System

Agriculture is entering a critical period with regard to climate change, crop stress, and potential related impacts to crop productivity. Decision makers need reliable and relevant crop yield and economic assessment tools. The objective of this UVMRP program component is to develop an Integrated Agricultural Impact Assessment System. This system will couple the Earth's climate, ultraviolet-visible solar radiation, and comprehensive crop growth models, and assimilating satellite and in situ observations to study climate-crop interactions and related economic impacts stemming from crop responses to a wide range of stressors. Common stressors include temperature, moisture, nutrients, UV radiation, CO2 concentration, aerosols and other air pollutants. Please click on the above Agricultural Impact for more information.

UV-B Monitoring Network

High-energy ultraviolet solar radiation can significantly damage plants, crops, animals, and ecosystems, alone or in combination with other environmental stress factors such as temperature and moisture. To address these concerns, in 1992, the USDA established the UV-B Monitoring and Research Program at Colorado State University to provide cost-effective monitoring of UV-B levels across the United States. The program's primary objective is continued operation of the national network of UV-B monitoring instruments to deliver high-quality data, data products, and services in support of agricultural research. In particular, we quantify the geographic distribution of UV-B solar irradiance; the effects of increased or diminished UV-B on crops, native and invasive plants, and animals; and facilitate the use of these measurements directly, or as inputs to climate and crop models.

These data are collected automatically every night, processed for quality control, and made available on this web site, typically within one day of its collection. Most data are available back through 1997, with some additional data available back to 1993. Please click on the above Monitoring Network for information about our locations and instruments. Please click on the above Data Download for our data and data products.