A/C breaker trips whenever ambient temp is high?

There is no magic fix. The ONLY thing to do is to run an AMP DRAW of the compressor wire. THAT will tell you what the problem is. AC spec ratings are based on 95 degree ambient and at 95 degrees an AC will NOT pull more than 15 amps hi cool regardless of brand/ model. So, if the 20 amp breaker trips at 95 degrees that tells me the compressor is probably bad and is pulling excess amps. Below 95 the draw is probably 17 or 18, but not enough to trip the breaker. Doug