Overview
- Hoy No Circula, which ran Saturday, July 18, 2026, bars holograma 1 vehicles with odd plate endings, all holograma 2 cars, and foreign‑plated vehicles from 05:00 to 22:00 across Mexico City and 18 conurbated Estado de México municipalities.
- Vehicles with holograma 00 or 0, emergency units, public transport, electric or hybrid cars with 0/00 stickers, motorcycles, and cars with disability plates are exempt from the restriction.
- The Dirección de Monitoreo Atmosférico reported 'buena' air quality at 06:00 and updates IMECA readings hourly, with a Fase 1 contingency triggered if ozone or particle levels exceed 150 points.
- Authorities warned drivers that enforcement includes on‑street checks, fines of 20–30 UMA (about 2,346–3,519 MXN) and possible remittance of vehicles to the impound lot for violations.
- Officials urged motorists to use Metro, Metrobús, ECOBICI, RTP and Trolebús and to consult the official calendar and hourly air‑quality reports to avoid penalties and reduce city emissions.