This uses the pollen forecast json API from Benadryl's Social Pollen Count.
Whipped up to be used with Arduino and johnny-five.js to output to an LCD screen, but this version will just output to your terminal, and does not depend on johnny-five.
Only tested with UK-based latitude/longitude.
Defaults to centre of Oxford if latitude/longitude not provided.
$ node index.js [latitude] [longitude]