Overview

• Air quality alerts remain active in over a dozen states, including New York, Minnesota, Wisconsin and California, as hot, stagnant conditions elevate ground-level ozone and PM2.5 from wildfire smoke.
• AirNow forecasts show New York City’s AQI could reach 112 today, prompting advisories until late evening and local forecasts for Long Island predict moderate improvement by Wednesday.
• Meteorologists link broader relief to expected wind shifts and frontal passages later this week that should disperse accumulated pollutants.
• Health agencies warn children, older adults and people with heart or lung conditions to limit outdoor exertion and watch for symptoms such as unusual fatigue, palpitations or shortness of breath.
• Officials advise reducing emissions and exposure by using mass transit, cutting vehicle trips, delaying appliance use during peak hours and employing HEPA filtration or N95 masks indoors.