A new push of Saharan dust is expected to spread across Costa Rica this week, bringing hazy skies, reduced visibility and poorer air quality, with Thursday and Friday forecast to be the most difficult days. The dust will affect nearly all of Costa Rica, although higher concentrations are expected in Alajuela, western parts of the […] The post Costa Rica Warns of Poor Air Quality as Saharan Dust Arrives appeared first on The Tico Times | Costa Rica News | Travel | Real Estate.