

New York Gov. Kathy Hochul announced June 8 enhanced measures to protect horses at New York State racetracks as smoke and haze from ongoing Canadian wildfires continue to impact air quality throughout the state.
The announcement comes two days before the scheduled running on the June 10 Belmont Stakes (G1) at Belmont Park, which canceled racing Thursday.
"As New Yorkers continue to experience unhealthy air quality as a result of Canadian wildfires, we must all work to ensure that animals—including these peak-performance equine athletes—are protected," Hochul said. "The measures being implemented at tracks across New York State are effective steps to keep all those who participate in the sport safe now and into the future."
Hochul on June 7 encouraged New Yorkers to postpone any outdoor activities in impacted regions until conditions improve. Accordingly, the New York State Gaming Commission directed all tracks to stop all racing, training. and workouts until further notice. The Gaming Commission continues to monitor air quality and rely on guidance from veterinary experts to ensure any decision to resume racing is based solely on the best interest of the horse population.
The Gaming Commission has established measures tied to the U.S. Environmental Protection Agency's air quality index. The AQI includes a range of index values. The higher the AQI value, the greater the health concern:
"This guidance was arrived at in consultation with the New York Racing Association and is grounded in our shared efforts to provide the safest possible environment for training and racing Thoroughbred horses throughout New York State," said Pat McKenna, NYRA's vice president of communications. "NYRA will continue to closely monitor air quality in and around Belmont Park in the coming days, and we remain optimistic that conditions will allow for the resumption of training and racing on Friday."
Gaming Commission equine medical director Dr. Scott Palmer, is directing all Thoroughbred and Standardbred racetracks in the state to implement additional protocols based upon the track's AQI, which considers the amount of particle pollution, ground-level ozone, and toxic gases (carbon monoxide, sulfur dioxide, and nitrogen dioxide) in the air. The AQI varies from location to location and changes throughout the day.
As with humans, particulates in the atmosphere can build up in horse respiratory systems causing serious health problems, including eye and respiratory tract irritation. Poor air quality can irritate pre-existing conditions, including recurrent airway obstruction (heaves), as well as exercise-induced pulmonary hemorrhage. High concentrations of smoke and particulates can cause persistent cough, nasal discharge, wheezing, an increased effort to breathe, and altering of the immune system.
All parties interacting with horses are urged to review veterinary guidelines for smoke/extreme weather:
UC Davis guidelines for horses exposed to wildfire smoke
Equestrian Canada's guidelines for equine competition and training during extreme environmental conditions
Effective immediately:
While the AQI is under 150:
Once the AQI reaches 150:
If the AQI is between 151 and 200:
If the AQI reaches 201: