For some, a blue porch light is an aesthetic choice and a calming alternative to a white porch light. For others, it’s a meaningful symbol of awareness. A blue porch light is sometimes used to raise awareness for autism. The Autism Speaks Campaign launched the Light Up Blue initiative in April. It became popular in 2021, and this campaign will likely continue in subsequent years. Still, that doesn’t mean that you can only have a blue porch light on for one month per year.