Abstract: A methane alert station for detecting methane gas in an environment. The methane alert station comprises a casing, at least one window opening formed in the casing, a infrared transmitting window disposed in the at least one window opening, an infrared light source disposed adjacent to the infrared transmitting window, a hyperbolic mirror disposed in the casing coaxially with a central axis, a Winston cone disposed coaxially with the central axis and spaced from the hyperbolic mirror along the central axis, and a filter-detector arranged coaxially with the central axis and so that the Winston cone is disposed between the hyperbolic mirror and the filter-detector. The infrared light source is configured to emit an outgoing infrared light from the casing. The filter-detector is configured to measure a methane gas concentration in the environment by measuring an absorption of infrared radiation of the methane gas at specific wavelength bandwidths.