New York City's air quality has been classified as "unhealthy" due to smoke from wildfires in Canada, prompting officials to advise residents to stay indoors. The Air Quality Index (AQI) has ranged between 151 and 200, significantly exceeding the "good" threshold of 0-50.
Michael Petroni, a pollution expert and former EPA employee, stated that spending a full day outdoors in the city's current air conditions is comparable to smoking approximately 10 cigarettes. He explained that a general rule of thumb estimates that 20 AQI points over a full day are equivalent to smoking one cigarette. The current AQI levels mean New Yorkers are inhaling levels of dust, dirt, soot, smoke, and other toxins that would typically be associated with smoking.
The AQI measures particulate matter, which includes microscopic toxins like heavy metals and aerosol droplets. Petroni noted that these small particles can enter the bloodstream, potentially harming the immune system and increasing the long-term risk of cancer and heart disease.
Short-term exposure can lead to immediate health effects such as itchy eyes, lethargy, inflammation, headaches, and shortness of breath. Petroni advised that physical activity, like running, may become significantly more difficult under these conditions, with individuals experiencing increased fatigue and a racing heart as their bodies struggle to clear the pollutants.
To mitigate the risks, authorities recommend staying indoors. Air purification systems and air conditioning can help improve indoor air quality. The city is also distributing free N95 masks, which can filter up to 95% of particulate pollution, for individuals who must go outside.