If you're planning to drive in Mexico City this Saturday, September 19, you need to know the Hoy No Circula Saturday rules. The program restricts traffic based on your license plate's last digit and your verification sticker, and it applies across the entire Mexico City metropolitan area. Here's what you need to know before you hit the road.
What Is Hoy No Circula Saturday?
Hoy No Circula is a driving restriction program managed by Mexico City's Secretariat of the Environment (SEDEMA). Its main goal is to reduce air pollution by keeping a portion of vehicles off the roads each day. While the weekday rules are well-known, the Saturday version operates on a separate schedule that catches many drivers off guard.
The program doesn't just apply within the 16 boroughs of Mexico City. It also affects surrounding municipalities in the State of Mexico, creating a unified effort to improve air quality across the Valley of Mexico. If your route takes you through any of these areas, the restrictions apply to you.

How the Saturday Program Works
Unlike the weekday program, the Saturday rules depend on three factors: the last digit of your license plate, the color of your verification sticker (engomado), and whether the date falls on an even or odd week. This means the restrictions change from week to week, so you can't rely on memory alone.
To stay compliant, you must check these details before every Saturday trip. The program is enforced by traffic cameras and police, and fines can be steep. Knowing the rules ahead of time saves you money and hassle.
Key Factors That Determine Your Eligibility
- Last digit of your license plate: Determines which day you're restricted.
- Verification sticker color: Indicates your vehicle's emissions level and exemption status.
- Even or odd week: Some Saturdays restrict vehicles with certain plate endings only on even or odd weeks.
- Vehicle type: Electric and hybrid cars may be exempt, but you still need to verify.
- Where you drive: The rules apply across Mexico City and many State of Mexico municipalities.
Which Cars Can Circulate on September 19?
For Saturday, September 19, the specific restrictions depend on the week number. Because the program alternates between even and odd weeks, you must confirm whether September 19 falls on an even or odd week in the official calendar. Once you know that, match it with your plate ending and sticker color.
Generally, vehicles with the cleanest verification stickers (like "00" or "0") are exempt from the Saturday program. However, cars with older stickers (like "1" or "2") face restrictions based on their plate digits. To be certain, consult the official SEDEMA schedule for that exact date.
Comparison of Vehicle Exemptions
| Verification Sticker | Exempt from Saturday? | Notes |
|---|---|---|
| 00 (Zero emissions) | Yes | Often exempt, but check current rules. |
| 0 (Low emissions) | Yes | Usually exempt from Hoy No Circula. |
| 1 (Moderate emissions) | No | Subject to plate digit and week rules. |
| 2 (High emissions) | No | Most restricted; check schedule carefully. |
Why It Matters for Drivers
Ignoring the Hoy No Circula Saturday rules can lead to fines and vehicle impoundment. More importantly, the program is designed to protect public health by reducing harmful emissions. On weekends, pollution levels can spike due to increased leisure travel, so compliance is crucial.
Drivers should also be aware that the program is subject to change based on air quality alerts. On days with poor air quality, additional restrictions may be imposed. Always check official sources before you drive. The background to this story is set out in Flock Camera Backlash: Vigilantes Target License Plate Readers. A related thread runs through Tesla Stock Suffers Double-Digit Drop: What Investors Need to. Earlier coverage in Judge Rules FDA Mifepristone Restrictions Arbitrary and shows how the argument developed.
What to Watch Next
Stay informed by following SEDEMA's official announcements and checking the weekly Hoy No Circula schedule. If you're planning a trip that crosses municipal boundaries, verify the rules for each area. And remember, the program is just one part of Mexico City's broader effort to improve air quality. A closer look at the same subject appears in Trending: latest articles. Anyone following the wider picture can start with Why Drivers Keep Old Cars: DGT Environmental Labels Explained. The same theme surfaces in 11.99 Euro Hygrometer: The Must-Have Device to Control Home Humidity, which takes a different angle.
For now, make sure your verification sticker is up to date and your plate digit is checked. A little preparation goes a long way toward a smooth Saturday drive. Context on how this played out before sits in Pornhub Returns to Australia After Age Verification Rules Enforced. A companion piece, Phones at the Table: The New Cigarettes in Restaurants, approaches the same subject from another angle.
FAQ
What is Hoy No Circula Saturday?
Hoy No Circula Saturday is a driving restriction program in Mexico City that limits which vehicles can circulate on Saturdays based on license plate digits and verification stickers. It aims to reduce air pollution.
Does Hoy No Circula apply on September 19?
Yes, the Saturday program operates every weekend, including September 19. The specific restrictions depend on whether that date falls on an even or odd week, so check the official schedule.
Are electric cars exempt from Hoy No Circula Saturday?
Electric and hybrid vehicles often hold a "00" or "0" verification sticker, which typically exempts them from the program. However, always confirm current rules with SEDEMA.
Where does Hoy No Circula Saturday apply?
The program applies throughout Mexico City's 16 boroughs and many municipalities in the State of Mexico. If you drive in the Valley of Mexico, you must comply.