# Mexico City Hoy No Circula and Ozone Contingency > Live situation record from CLSTR: https://clstr.news/situations/mexico-vehicle-regulation-reforms > Updated: 2026-09-12T22:19:45.000Z. Sources: 79. Developments: 30. The Hoy No Circula program continued its rotating vehicle bans through mid-September 2026 across Mexico City and the State of Mexico. Following the restrictions on September 7, which targeted yellow-sticker vehicles (plates 5 and 6) with holograms 1 or 2, the program moved to Saturday, September 12. On that day, all vehicles with hologram 2 were prohibited from circulating between 05:00 and 22:00 (or 23:00), alongside hologram 1 vehicles with even-numbered license plate endings. The Comisión Ambiental de la Megalópolis (CAMe) noted that no extraordinary double restriction was planned for that date. Environmental concerns escalated on September 12 when CAMe activated Phase 1 of an environmental contingency in the Valley of Mexico and the Mexico City Metropolitan Area due to high ozone concentrations. Monitoring stations recorded levels of 161 ppb at Benito Juárez and 157 ppb at the Centro de Ciencias de la Atmósfera in Coyoacán. This contingency was attributed to a high-pressure system, weak winds, and intense solar radiation. In response to the contingency, additional circulation restrictions were set for Sunday, September 13, from 05:00 to 22:00. These include hologram 2 vehicles, specific hologram 1, 0, and 00 vehicles, as well as local and federal cargo vehicles restricted between 06:00 and 10:00. Authorities advised vulnerable populations to avoid outdoor activities between 13:00 and 19:00. Parallel to these bans, the mandatory emissions testing calendar remains in effect. Drivers with pink stickers (plates 7 and 8) must complete verification in September, while those with red stickers (plates 3 and 4) have a window spanning September and October. ## Claims - CAMe activated Phase 1 of an environmental contingency due to high ozone levels in the Valley of Mexico. (disputed by 21 sources) - There is no active environmental contingency as of the latest report. (disputed) - A high-pressure system and weak surface winds contributed to atmospheric stability and pollutant accumulation. (corroborated by 19 sources) - The Hoy No Circula program will apply on Sunday, September 13, from 5:00 to 22:00 hours. (corroborated by 19 sources) - Private vehicles with verification hologram 2 and certain hologram 1 and 0/00 vehicles are prohibited from circulating. (corroborated by 19 sources) - Ozone concentrations reached 161 ppb at the Benito Juárez station. (corroborated by 17 sources) - Ozone concentrations reached 157 ppb at the Centro de Ciencias de la Atmósfera in Coyoacán. (corroborated by 17 sources) - Authorities recommend avoiding outdoor activities between 13:00 and 19:00 hours. (corroborated by 15 sources) - Local and federal cargo vehicles face circulation restrictions between 6:00 and 10:00 hours. (corroborated by 7 sources) - Vehicles with yellow stickers, license plate endings 5 or 6, and holograms 1 or 2 are restricted from circulating on Monday, September 7. (corroborated by 2 sources) - Electric and hybrid vehicles are exempt from the Hoy No Circula program. (corroborated by 2 sources) - Vehicles with hologram 00 or 0 are exempt from the Hoy No Circula program. (corroborated by 2 sources) ## Timeline ### 2026-09-12: Valley of Mexico ozone contingency activated and then suspended CAMe activated and subsequently lifted a Phase 1 ozone contingency in the Valley of Mexico after high levels reached 161 ppb. Driving restrictions were enforced on Sunday before improving weather conditions led 34 sources. https://clstr.news/cluster/mexico-city-activates-phase-1-ozone-contingency ### 2026-09-11: Mexico City and Edomex vehicle restrictions for September 12 Vehicle restrictions for the Hoy No Circula program apply this Saturday, September 12, 2026, in Mexico City and parts of the State of Mexico, affecting hologram 2 and even-numbered hologram 1 vehicles. 2 sources. https://clstr.news/cluster/mexico-city-and-edomex-vehicle-restrictions-for-september-12 ### 2026-09-07: Mexico City and Estado de México vehicle restrictions for September Vehicle restrictions and mandatory emissions verification schedules are active for Mexico City and the State of Mexico throughout September 2026. 4 sources. https://clstr.news/cluster/mexico-city-and-estado-de-mxico-vehicle-restrictions-for-september ### 2026-09-04: Mexico City vehicle restrictions for Hoy No Circula on September 5 Vehicle restrictions for the Hoy No Circula program apply on September 5, 2026, in Mexico City and surrounding areas, affecting hologram 2 and odd-numbered hologram 1 vehicles. 7 sources. https://clstr.news/cluster/mexico-city-and-state-of-mexico-implement-hoy-no-circula-restrictions ### 2026-09-04: Mexico City faces transit collapse and poor air quality Mexico City faced poor air quality and major transit disruptions on September 4, 2026, due to high ozone levels, Metro technical failures, and road blockades caused by protests. 7 sources. https://clstr.news/cluster/mexico-city-faces-transit-collapse-and-poor-air-quality ### 2026-09-04: Mexico fuel prices and driving restrictions for September 4 Mexico reports stable fuel prices with a slight rise in Premium gasoline, while driving restrictions remain in effect for blue-sticker vehicles in the Mexico City Metropolitan Area. 5 sources. https://clstr.news/cluster/mexico-fuel-prices-and-driving-restrictions-for-september-4 ### 2026-09-02: Mexico City faces protests and traffic restrictions Mexico City anticipates multiple protests on September 3 from labor unions and pension advocates, alongside standard Hoy No Circula traffic restrictions for green-sticker vehicles. 6 sources. https://clstr.news/cluster/mexico-city-faces-protests-and-driving-restrictions ### 2026-08-24: Mexico City vehicle restrictions schedule for August 24–29, 2026 Vehicle circulation restrictions in Mexico City and the State of Mexico will follow the standard Hoy No Circula schedule from August 24 to 29, 2026, with no environmental contingency active. 7 sources. https://clstr.news/cluster/mexico-city-vehicle-restrictions-schedule-for-august-2429-2026 ### 2026-08-22: Mexico City and Estado de México vehicle restrictions for August 22 Vehicle restrictions under the Hoy No Circula program apply this Saturday, August 22, 2026, in Mexico City and the State of Mexico to combat air pollution. 4 sources. https://clstr.news/cluster/mexico-city-and-estado-de-mxico-vehicle-restrictions-for-august-22 ### 2026-08-19: Traffic restrictions active in Cúcuta and Mexico City Traffic restrictions are active in Cúcuta, Colombia, for plates ending in 7 and 8, and in Mexico City under the ‘Hoy No Circula’ program for specific plates and holograms to manage emissions. 4 sources. https://clstr.news/cluster/traffic-restrictions-active-in-ccuta-and-mexico-city ### 2026-08-13: Traffic restrictions and road closures reported in Mexico and Colombia Traffic restrictions and road closures are impacting Mexico and Colombia. Dosquebradas has implemented a three-day car ban for earthquake relief, while Mexico City maintains environmental driving limits. 9 sources. https://clstr.news/cluster/hoy-no-circula-restrictions-active-for-cdmx-and-edomex ### 2026-08-11: Mexico City vehicle restrictions active for Tuesday, August 11 Vehicle restrictions for the Hoy No Circula program apply this Tuesday, August 11, in Mexico City and the State of Mexico for cars with pink stickers and license plates ending in 7 or 8. 7 sources. https://clstr.news/cluster/mexico-city-vehicle-restrictions-active-for-tuesday-august-11 ### 2026-08-07: Mexico City Saturday 'Hoy No Circula' limits on vehicles Aug 8, 2026 Mexico City and nearby State of Mexico municipalities will enforce Hoy No Circula on 8 Aug 2026, barring hologram 1 even‑plate and hologram 2 vehicles from 05:00‑22:00, with exemptions for electric, hybrid and 5 sources. https://clstr.news/cluster/mexico-city-saturday-hoy-no-circula-limits-on-vehicles-aug-8-2026 ### 2026-08-02: Mexico City, State of Mexico enforce Hoy No Circula limits Aug 2026 Hoy No Circula restricts certain red‑or yellow‑sticker cars in CDMX and State of Mexico on Aug 2, 3 and 5 2026; exemptions apply, fines 20‑30 UMA. 4 sources. https://clstr.news/cluster/mexico-city-and-state-of-mexico-enforce-hoy-no-circula-restrictions-for-august-23-2026 ### 2026-07-31: Mexico City Hoy No Circula restrictions apply to vehicles on July 31, 2026 On 31 July 2026, Mexico City’s Hoy No Circula will block cars with blue stickers, plates ending 9 or 0 and holograms 1‑2 across the city and 18 surrounding municipalities; exemptions apply and fines range $2.3k 7 sources. https://clstr.news/cluster/mexico-city-hoy-no-circula-restrictions-apply-to-vehicles-on-july-31-2026 ### 2026-07-28: Mexico City sees widespread traffic jams as protests and Hoy No Circula restrictions hit July 30 Protests and rain crippleed Mexico City traffic on 30 July 2026, while Hoy No Circula restrictions barred green‑sticker cars, leading to major congestion and metro delays. 6 sources. https://clstr.news/cluster/mexico-city-and-state-of-mexico-enforce-hoy-no-circula-on-july-29 ### 2026-07-25: Mexico City Hoy No Circula program lifts restrictions as State of Mexico issues vehicle verification schedule Mexico City’s Hoy No Circula program lifts restrictions on July 26 2026, while the State of Mexico releases 2026 verification tariffs, schedules, and fines up to 3,519 MXN for non‑compliance. 5 sources. https://clstr.news/cluster/mexico-city-hoy-no-circula-program-lifts-restrictions-as-state-of-mexico-issues-vehicle-verification ### 2026-07-23: Mexico City and State of Mexico extend Hoy No Circula restrictions for July 23‑24, 2026 Mexico City and nearby municipalities will enforce Hoy No Circula bans on July 23‑24, 2026, targeting specific plates and stickers, with exemptions and fines up to 30 UMA. 8 sources. https://clstr.news/cluster/mexico-city-and-state-of-mexico-extend-hoy-no-circula-restrictions-for-july-2324-2026 ### 2026-07-20: Mexico City and State of Mexico enforce Hoy No Circula vehicle bans on July 20‑21, 2026 On July 20‑21, 2026 Mexico City and the State of Mexico halted traffic for cars with specific plate numbers and hologram colors under the Hoy No Circula program, while exempting electric, hybrid and emergency‑t 2 sources. https://clstr.news/cluster/mexico-city-and-state-of-mexico-enforce-hoy-no-circula-vehicle-bans-on-july-2021-2026 ### 2026-07-18: Mexico's Saturday 'Hoy No Circula' limits vehicles on July 18, 2026 Mexico City and surrounding State of Mexico will enforce Saturday's Hoy No Circula on July 18, 2026, barring hologram 2 cars and hologram 1 cars with odd plates from 05:00–22:00; exemptions apply and fines run 5 sources. https://clstr.news/cluster/mexicos-saturday-hoy-no-circula-limits-vehicles-on-july-18-2026 ### 2026-07-12: Mexico City Hoy No Circula restricts vehicles on July 13, 2026 Hoy No Circula allowed all traffic on 12 July 2026, but on 13 July it barred yellow‑sticker, plates ending 5/6, or hologram 1‑2 cars, with fines of up to 3,519 pesos. 4 sources. https://clstr.news/cluster/mexico-city-hoy-no-circula-restricts-vehicles-on-july-13-2026 ### 2026-07-10: Mexico City Hoy No Circula limits set for July 10‑13, 2026 Mexico City’s Hoy No Circula program restricts specific cars on July 10, 11 and 13 2026, with exemptions and fines of 1,924‑2,886 MXN. 8 sources. https://clstr.news/cluster/mexico-city-traffic-gridlock-worsens-amid-rain-and-protests ### 2026-07-06: Mexico City and State of Mexico enforce Hoy No Circula bans on July 6 and 8, 2026 Hoy No Circula bans apply in Mexico City and neighboring State of Mexico on July 6 (yellow‑sticker cars) and July 8 2026 (red‑sticker cars); violations incur 20‑30 UMA fines. 2 sources. https://clstr.news/cluster/mexico-city-and-state-of-mexico-enforce-hoy-no-circula-bans-on-july-6-and-8-2026 ### 2026-07-04: Mexico City Saturday Hoy No Circula Restrictions Apply July 4 Mexico City’s Hoy No Circula Saturday rule for July 4 bans vehicles with hologram 1 (odd plates), hologram 2 and foreign plates; exemptions include hologram 0, electric/hybrid cars. No double restriction; fines 3 sources. https://clstr.news/cluster/mexico-city-saturday-hoy-no-circula-restrictions-apply-july-4 ### 2026-06-26: Mexico City and State of Mexico enforce Hoy No Circula limits on June 27, 2026 June 27, 2026 Hoy No Circula bars hologram 2 cars and hologram 1 even‑plate vehicles in Mexico City, State of Mexico, Toluca and Santiago Tianguistenco; exemptions apply and fines range 2,346‑3,519 pesos. 2 sources. https://clstr.news/cluster/mexico-city-state-of-mexico-enforce-hoy-no-circula-limits-on-june-27-2026 ### 2026-06-20: Mexico City and State of Mexico Enforce Saturday 'Hoy No Circula' Limits on June 20 Saturday, June 20 2026, Mexico City and State of Mexico re‑activate 'Hoy No Circula' limits, barring odd‑ending hologram 1 plates and all hologram 2 vehicles from 5 a.m. to 10 p.m., with exemptions for electric 2 sources. https://clstr.news/cluster/mexico-city-and-state-of-mexico-enforce-saturday-hoy-no-circula-limits-on-june-20 ### 2026-06-16: Mexico City and State of Mexico enforce Hoy No Circula limits on June 16‑17, 2026 Hoy No Circula restricts pink‑sticker cars with plates 7‑8 and hologram 1‑2 on 16 June, and red‑sticker cars with plates 3‑4 and hologram 1‑2 on 17 June in Mexico City and State of Mexico; exemptions include EV 4 sources. https://clstr.news/cluster/mexico-city-state-of-mexico-enforce-hoy-no-circula-restrictions-on-june-16-2026 ### 2026-06-14: June 15 vehicle circulation bans go into effect in Quito and Mexico City On 15 June 2026 Quito blocks plates ending 1‑2 during peak hours, while Mexico City bans plates ending 5‑6 all day; both programs list exemptions and fines. 3 sources. https://clstr.news/cluster/june-15-vehicle-circulation-bans-go-into-effect-in-quito-and-mexico-city ### 2026-06-10: Mexico City and State of Mexico Enforce Hoy No Circula Vehicle Restrictions June 10‑12, 2026 Mexico City and the State of Mexico enforce Hoy No Circula on June 10‑12, 2026, restricting vehicles with red stickers and plates ending 3‑4; fines range 2,300‑3,500 MXN. 3 sources. https://clstr.news/cluster/mexico-city-and-state-of-mexico-enforce-hoy-no-circula-vehicle-restrictions-june-1012-2026 ### 2026-06-04: Mexico City enforces Hoy No Circula vehicle bans on June 5‑6, 2026 Mexico City and surrounding municipalities will enforce Hoy No Circula bans on June 4‑5 (green and blue engomado) and June 6 (first Saturday) for specific plate numbers and holograms; exemptions apply and fines 5 sources. https://clstr.news/cluster/mexico-city-hoy-no-circula-bans-greensticker-cars-on-june-4 --- Cite as: Mexico City Hoy No Circula and Ozone Contingency. CLSTR, https://clstr.news/situations/mexico-vehicle-regulation-reforms