Abstract: A harmful solar radiation detection apparatus includes a first fluorescent composition comprised of a blend of a first fluorescent material and a second fluorescent material contained in a first retainer. The first fluorescent material is capable of absorbing radiation having a wavelength less than 300 nm and is capable of fluorescing at a first fluorescent wavelength above 300 nm upon absorption of the radiation less than 300 nm. The second fluorescent material is capable of absorbing radiation at the first fluorescent wavelength and is capable of fluorescing at a second fluorescent wavelength which is a visible wavelength. A second fluorescent composition is comprised of the second fluorescent material and is contained in a second retainer. A housing assembly supports and houses the first retainer and the second retainer such that the first fluorescent composition and the second fluorescent composition are capable of being exposed to sunlight.