[REVISION HISTORY]

Mexico City Hoy No Circula and Ozone Contingency

29 recorded revisions of this situation.

What changed

2026-10-23 19:00 UTC → 2026-10-24 04:46 UTC · added ~~removed~~

The Hoy No Circula program continues its rotating vehicle bans across the 16 boroughs of Mexico City and various municipalities in the State of Mexico to regulate traffic and reduce pollutant emissions. The restrictions remain active daily from 05:00 to 22:00. On September 12, 2026, the Comisión Ambiental de la Megalópolis (CAMe) activated Phase 1 of an environmental contingency due to high ozone levels, with concentrations reaching 161 ppb at Benito Juárez and 157 ppb in Coyoacán. This triggered extraordinary driving restrictions for September 13, affecting hologram 2, certain hologram 1 vehicles, and specific pink-decal hologram 0/00 vehicles, alongside restrictions on certain LP gas and cargo units. The contingency was suspended by 15:00 on September 13 as improved wind speeds and cloud cover aided pollutant dispersion. In late September 2026, the program maintained standard rotations. On September 29, vehicles with pink stickers and license plate endings 7 and 8 were prohibited, followed by vehicles with red stickers and plate endings 3 and 4 (holograms 1 and 2) on September 30. Throughout late October 2026, the program has maintained its standard rotation without additional environmental contingencies. Restrictions for October 19 targeted yellow decals with plate endings 5 or 6, while October 20 affected pink decals with endings 7 or 8. For the period of October 22–23, restrictions applied to green decals with endings 1 or 2, followed by blue decals with endings 9 or 0. ~~Exempt from these bans are electric and hybrid vehicles, motorcycles, agricultural tractors, and vehicles with holograms ‘0’ or ‘00’. Violators face fines ranging from 20~~ Additionally, the Mexico City Ministry of the Environment (SEDEMA) has reinstated Saturday Hoy No Circula regulations to ~~30 times~~ control automobile emissions in the ~~Unidad de Medida y Actualización (UMA), between $2,346.80~~ Valley of Mexico. These restrictions apply to the 16 boroughs of Mexico City and ~~$3,519.30 pesos,~~ several municipalities in the State of Mexico, including Ecatepec de Morelos, Naucalpan de Juárez, Nezahualcóyotl, and ~~potential vehicle impoundment.~~ Tlalnepantla de Baz.

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