July 4th Triggers Widespread U.S. Air Quality Alerts

Air quality alerts have been issued across multiple U.S. regions as high temperatures, fireworks, wildfire smoke, and stagnant air drive up ozone and fine particulate pollution. In the Midwest, cities like Greater Cleveland, Akron, Detroit, Chicago, and Milwaukee are experiencing unhealthy air, especially for sensitive groups. Central Arkansas has declared a 'Code Orange' Ozone Action Advisory, warning vulnerable residents to limit outdoor activities. In Southern California, including the Inland Empire and the 5 Freeway area north of Los Angeles, officials have issued alerts for harmful particle pollution. Residents are urged to stay indoors, avoid strenuous outdoor activity, and reduce use of pollution-generating equipment. The alerts underscore the combined impact of summer weather, holiday fireworks, and wildfire activity on public health.