We found appointment availability in Huntington Park, CA as of a minute ago. This doesn't confirm that slots are still available — but it does confirm that slots were marked as available a minute ago. Click on the "Appts" button to see if slots are still available, and be sure you're eligible in your state/county. You'll want to check eligibility with each pharmacy brand (some pharmacies only vaccinate seniors when teachers are eligible for example).
Availability is marked as of data collection (a minute ago). If data was collected recently, slots are more likely to be available. If data was not collected recently, slots are less likely to be available. This all depends on how quickly new slots fill up.
For updated data, this page automatically refreshes every 60 seconds.