Because the concentration of air pollutants does not yield in the Toluca Valley, Phase II is maintained in 22 Mexican municipalities, authorities of the Ministry of Environment of the State of Mexico.
At 7:00 p.m. on January 1, a maximum value of 213 points of the Air Quality Index of suspended particles (162 micrograms per cubic meter) was recorded at the San Cristóbal Huichochitlán (SC) station in the municipality of Toluca, therefore, Mexican environmental authorities determined to maintain Phase II of the environmental contingency plan in the Metropolitan Areas of the Toluca Valley and Santiago Tianguistenco, which include 22 municipalities.
Phase II of environmental contingency is applied in 16 municipalities of the Metropolitan Zone of the Toluca Valley which are: Almoloya de Juárez, Calimaya, Chapultepec, Lerma, Metepec, Mexicaltzingo, Ocoyoacac, Otzolotepec, Rayón, San Antonio la Isla, San Mateo Atenco , Temoaya, Tenango del Valle, Toluca, Xonacatlán and Zinacantepec.
As well as in the six municipalities of the Santiago Tianguistenco Metropolitan Area that are: Almoloya del Río, Atizapán, Capulhuac, Texcalyacac, Tianguistenco and Xalatlaco.
The Ministry of the Environment will inform in the early hours of tomorrow about the continuation or removal of this contingency.