Tungurahua, located approximately 120 kilometres south of Quito, intermittently emits ash, mud flows and gas. On February 2, 2014, an ash plume up to 10 kilometers high was expulsed from Tungurahua. Ash fall has been reported in Riobamba, Ambato, southern Quito and Mejía district (Valle de los Chillos). The Secretaria Nacional de Riesgo has declared an orange alert in the provinces of Tungurahua and Chimborazo. Volcanic activity at Tungurahua remains high, and ash eruptions could occur at any time and without warning. You should follow the advice of local authorities, monitor local news reports and be familiar with local evacuation plans (available at most hotels).
http://travel.gc.ca/destinations/ecuador?utm_source=ecuador&utm_medium=travel_en&utm_campaign=mailout_links&utm_content=2014-02-04%2003:32%20pm