Overview
- Environmental authorities kept Phase I of the ozone contingency in the Valley of Mexico after a 159 ppb peak at FES Acatlán on Tuesday and later readings still in the unhealthy range, including 146 ppb Wednesday evening.
- The expanded driving ban runs 5:00–22:00 for private vehicles with hologram 2; hologram 1 with plates ending 1, 3, 4, 5, 7, 9; hologram 0 and 00 with red sticker and plates 3 or 4; and vehicles without a verification hologram, which are treated as hologram 2.
- Sector measures include idling half of LP gas delivery units lacking dry‑break valves by license‑plate termination specified by CAMe and restricting freight traffic from 6:00 to 10:00 unless enrolled in self‑regulation programs; taxis under restriction must stop from 10:00 to 22:00.
- Exempt vehicles include electric and hybrid cars, those with ecological plates or exempt stickers, emergency and essential urban service units, school and staff transport, vehicles serving people with disabilities, refrigerated perishables carriers and concrete mixers, and motorcycles.
- Health guidance urges avoiding outdoor activity from 13:00 to 19:00, while CDMX fines for violating the program are set at 20–30 UMA (about 2,346–3,519 pesos), and CAMe will issue further reports to confirm whether the alert is maintained, lifted or escalated.