Hundreds of Fires in Mexico and Central America countries of Guatemala, Honduras, El Salvador, and Nicaragua on April 26, 2005.
Although locations where MODIS detected actively burning fires are marked in red; they are heavily concentrated in the Yucatan Peninsula and to the south and east. A thick layer of smoke hovers over the region and spreads northward into the Gulf of Mexico and eastward to the Caribbean Sea.
Therefore smoke is so bad that international airport in Honduras had been closed for six straight days.
Also March to May is the regions dry season. And these fires are likely a mixture of forest fires and agricultural fires.