Environmental Contingency
CAMe declares phase 1 environmental contingency in CDMX and Edomex due to heat wave
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The Environmental Commission of the Megalopolis (CAMe) declared Phase 1 Environmental Contingency on Saturday, April 25, in Mexico City and Mexico State due to high ozone levels from a heat wave. Expanded vehicle restrictions apply today, Sunday, April 26, under the Double Hoy No Circula program from 5:00 to 22:00. Temperatures in CDMX will reach 30 to 32 degrees Celsius.
The National Meteorological Service anticipates three to five heat waves in central Mexico from March to May 2026, with temperatures up to 4 degrees Celsius above average. The Megalopolis Environmental Commission estimates this could trigger up to 15 days of ozone contingency, imposing stricter vehicle restrictions in Mexico City and the State of Mexico.
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The Metropolitan Environmental Commission (CAMe) suspended the ozone air contingency in the Mexico City Metropolitan Area starting at 6:00 PM on Tuesday, February 17. This lifts the Double Hoy No Circula that was in effect for two days. The Hoy No Circula program will resume normal operations on Wednesday, February 18.