Here are some links to sites providing current weather observations in La Paz.
This observation tower is operated jointly by San Diego State University (SDSU) and Centro de Investigacíones Biológicas del Noroeste (CIBNOR), and is located near the CIBNOR buildings on the NW side of the large ensenada at the south end of La Paz (an area known as Comitán).
This webcam is situated in central La Paz (Ocampo and Altamirano), and shows the view to the northwest.