AC does not cool on 1994 Dodge Ram 2500

In spring the AC cools very well. When the air heats up in summer it will not cool at all well.

Have had coolant checked- okay. Please advise

Asked by for the 1994 Dodge Ram 2500
could be low in freon. have it checked at a shop.

1 more answer
sounds like your system is low on freon. ask around for a price to evacuate and recharge the system. most shops charge $120 to $150 depending on how much freon you need.