Are there any free clinics or other methods if getting medical care without insurance?

I am currently without insurance and cannot afford any plans that I've been offered. I have moderately severe asthma and was in a medically induced coma for a week after a particularly bad asthma attack earlier this year. Since then, I've been getting by with the refills for the asthma prescription I was given after that hospital stay, but that has now run out. What is my best option for being able to get an Albuterol prescription? I can afford the inhaler, but cannot afford a doctor visit without insurance. I don't want to have to end up in the ER again to get a prescription.