Wildfire smoke originating from the western United States is significantly degrading air quality across numerous states, extending as far east as the Midwest. This widespread smoke is causing hazy skies and reduced visibility, prompting the issuance of air quality advisories. These advisories recommend that residents, particularly sensitive groups such as the elderly, children, and those with respiratory conditions, limit outdoor activities and take measures to improve indoor air quality, such as using air purifiers and keeping windows closed. Wearing N95 masks is advised when outdoor exposure is unavoidable.