As scorching summer temperatures grip the Southwest, officials are urging residents in California, Arizona, and New Mexico to stay indoors this week due to a record-breaking heatwave and dangerous air quality conditions.
The Environmental Protection Agency (EPA) and the National Weather Service (NWS) have issued health alerts across the region, warning of severe air pollution combined with extreme heat that poses serious risks—especially for children, older adults, and those with respiratory or heart conditions.
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Air quality has deteriorated due to a rise in fine particulate pollution and ozone levels, both of which are intensified by high temperatures. The Centers for Disease Control and Prevention (CDC) notes that extreme heat is the deadliest weather-related hazard in the U.S., contributing to around 1,220 deaths annually.
On Tuesday, the Arizona Department of Environmental Quality issued an alert for the Phoenix metro area, warning of hazardous ozone levels and urging residents to reduce outdoor activity.
“Ozone is an air contaminant which can cause breathing difficulties for children, older adults, and individuals with respiratory problems,” the NWS warned. They recommended limiting physical activity, carpooling, telecommuting, and reducing the use of gasoline-powered equipment, especially during the hottest parts of the day.
In New Mexico, officials flagged “dangerous air quality” near areas impacted by the Trout Fire in Grant County. The advisory instructed everyone to avoid outdoor exertion, especially those with asthma or heart conditions. Symptoms such as a fast pulse, shortness of breath, or unusual fatigue could signal a serious health issue, and residents were urged to contact a healthcare provider if symptoms appear.
As climate-related weather events grow more extreme, health officials stress the importance of taking precautions during periods of high heat and pollution—particularly in vulnerable communities.
