As Canadian wildfire smoke drifts into the Mid-Atlantic, Maryland officials have issued a Code Red air quality alert for Friday. Experts warn the air will be unhealthy for all residents, urging the public to limit outdoor activity, avoid exercise, and avoid relying on face masks for protection.
Code Red and the Air Quality Index Explained
The Air Quality Index (AQI) acts as a critical gauge for public health, measuring the presence of common pollutants like ground-level ozone and fine particle pollution. Ranging from 0 to 500, the index is color-coded to communicate risk levels.
When the AQI reaches the red zone—defined as 151 to 200—the air is classified as unhealthy for the general population. At this stage, even healthy individuals may experience symptoms such as coughing, chest tightness, or shortness of breath. The Environmental Protection Agency (EPA) notes that once levels exceed 300, the condition becomes hazardous for everyone, though wildfires can occasionally drive local readings well beyond this standard.
Maryland’s Response to Canadian Wildfire Smoke
The current air quality crisis in Maryland stems from wildfires burning in Canada. Upper-level northwesterly winds have transported this smoke into the Mid-Atlantic, leading to hazy skies and poor air quality. The Maryland Department of the Environment (MDE) initially issued a Code Orange alert on Thursday, targeting sensitive groups such as children, older adults, and those with respiratory issues, before escalating to a Code Red warning for Friday.
Joel Dreessen, an air quality meteorologist and deputy program manager for MDE’s Air Monitoring Program, emphasized that the primary goal is public awareness regarding the physiological impacts of these pollutants. Plan your day accordingly to limit your exposure, and if you do have to be outside, find ways to limit the amount of air that you’re breathing over time,
Dreessen told WBAL-TV. He added, You don’t need to be exercising when concentrations are at unhealthy levels. We’re just, as a broad message, trying to let people understand that this can have impacts to health.
Health Risks and Medical Precautions
Pulmonologists warn that the particles carried by wildfire smoke are often microscopic, allowing them to penetrate deep into the respiratory system. Dr. Panagis Galiatsatos, a pulmonologist at Johns Hopkins Medicine, highlights that the danger often manifests in the days following exposure.
“It is pretty common to see after bad air quality days, three or four days later or a week later, patients coming into the emergency room with chest pain or a stroke because they’ve developed these vascular complications.”
Dr. Panagis Galiatsatos, Johns Hopkins Medicine
Dr. Galiatsatos also cautioned against a false sense of security regarding personal protective equipment. Experts generally advise staying indoors, utilizing air recirculation settings in vehicles, and avoiding indoor activities that produce particulate matter, such as vacuuming or burning candles.
Workplace Safety During Hazardous Weather
The impact of poor air quality extends to outdoor labor, where employers are adapting to protect their crews. Dave Sakin, owner of Value Remodeling, has implemented a policy that treats air quality with the same seriousness as extreme heat. Nothing we’re doing is an emergency, so it’s best for them not to have an emergency,
Sakin said. He maintains a proactive approach by monitoring weather reports and granting crews the autonomy to leave if conditions become unsafe.
With MDE experts suggesting that air quality alerts could persist into Saturday, residents are encouraged to monitor local forecasts closely.
