No. Take my advice - Do it later.
1. Has it had all the injections?
2. The weather is too hot. Pom is too small and legs are too short. It is more easy to attack by the reflecting heat from the ground. Also, their nose is too short, the respiration system is weaker than other dogs. The ground heat is much serious than we think (even after sunset). My Pom suffered 'chung sue' (sickness caused by over heat) last Oct during a walk under trees. I sent him to the vet and it had been intensity cared for few hours. Three days ago he had a walk near our home , he can't take the heat and feel sick again though it is already 5:00pm and only 10 mins walk in the shade.