Environment ❯ Air Quality

Pollution Control

Vehicle Emissions Traffic Management Emission Standards Regulatory Measures Government Initiatives Graded Response Action Plan Traffic Emissions Traffic Regulations Contingency Measures Vehicular Emissions

Court Blocks EPA Reclassification of California Clean Air Waivers

Judge Beryl Howell’s order bars the EPA from enforcing its reclassifications during the lawsuit.

Study Finds London's ULEZ Associated With Faster Lung Growth in Children

NYC Health Report Finds One Year of Congestion Pricing Did Not Change Citywide Air Quality

Senate Republicans Move to Void EPA Waivers That Let California Set Tougher Vehicle and Equipment Rules

Hoy No Circula Operated Normally as July 30–31 Restrictions Target Specific Sticker Colors

CAQM Orders Drone Surveillance to Track Stubble Burning in Four Northern States

Hoy No Circula Operates Normally in Mexico City as Plate-Based Limits Continue

Hoy No Circula Bars Green-Label Cars With Plate Endings 1 and 2 in CDMX and Edomex

Hoy No Circula Operates Normally as CAMe Declines to Declare Ozone Contingency

Uttar Pradesh Cabinet Approves Purchase Of 250 Electric Buses For UPSRTC

Delhi Approves PARIVARTAN Plan to Replace Old Trucks and Buses With BS‑VI and Electric Vehicles

CDMX Enforces Third‑Saturday Hoy No Circula Restrictions

Hoy No Circula Operates Under Regular Calendar in Mexico City as No Double Restriction Is Triggered

Hoy No Circula Operates Under Ordinary Schedule Across Mexico City Region

Punjab Makes Climate Watch Operational to Fight Smog

Hoy No Circula Enforced Normally on July 9–10 in Mexico City Area

EPA Proposes Narrow Rollback of Biden-Era Heavy‑Duty Truck NOx Rule

Hoy No Circula Restricts Red‑Sticker Vehicles in Mexico City on Wednesday

CAQM Finds 62 Air-Quality Violations in NCR During 17-Day Inspection Drive

Hoy No Circula Restricts Hologram 1 (Non), All Hologram 2 and Foreign Plates in CDMX