Volcanoes

Key:
Grey - Extinct
Green - Dormant
Yellow - Minor Activity
Red- Erupting

In total, Peru has 16 volcanoes. Most of them being dormant (12 of them) and stratovolcanoes (11 of them). All of the volcanoes are located in Southern Peru. Three of the volcanoes are currently active. Two of which have minor activity/ eruption warning and one is currently erupting. [Click on map to enlarge.]

The volcano that is currently erupting is Sabancaya. [Bottom Left] Sources say that it started erupting on November 6, 2016 and is still erupting. It has only been erupting gas-and-ash plumes which, is still not dangerous because inhaling it can cause breathing and lung problems. 

Peru currently has monitoring equipment and volcanic hazard maps. From the research I have done, there are only four volcanoes that are being monitored. Two of them currently active, one that is currently dormant but one of the most active in the past, and the last one is actually lava domes. When a volcano erupts, Peru declares a state of emergency and starts a mass evacuation. I am assuming they spread the news through different media outlets but, I could not find an article to confirm that.

References:
Express | Peru volcanoes explode into life triggering state of emergency and MASS EVACUATION

Global Volcanism Program | Sabancaya

World Organization of Volcano Observatories

Volcano Discovery | Volcanoes of Peru