Inland Empire Swelters Under Excessive Heat and Air Quality Alerts

Photo byNational Weather Service

Extreme Heat and Wildfire Smoke Worsen Conditions in Southern California

San Bernardino — Issued by the National Weather Service at 8:47 PM on September 8, 2024.

Residents of the Inland Empire, including cities such as Riverside, San Bernardino, Fontana, and Rancho Cucamonga, are under an Excessive Heat Warning and Air Quality Alert through Monday evening as temperatures soar and wildfire smoke fills the air. The combination of extreme heat and elevated levels of ozone and fine particles from wildfire smoke poses significant health risks, especially for vulnerable populations.

Heat Wave Brings Dangerous Temperatures

The Excessive Heat Warning, effective until 8 PM PDT Monday, forecasts dangerously hot conditions with daytime highs ranging from 102 to 110 degrees Fahrenheit. Overnight temperatures are expected to provide little relief, only dropping into the mid to upper 70s.

Health Risks and Precautionary Measures

• The extreme heat can lead to a significant increase in heat-related illnesses.
• Residents are advised to drink plenty of fluids, stay in air-conditioned spaces, avoid direct sun exposure, and check on elderly relatives and neighbors.
• Those without access to air conditioning should seek relief in public cooling centers or other air-conditioned environments.

Air Quality Alert: Smoke and Smog Compound Health Risks

In addition to the heat, the South Coast AQMD has extended an Air Quality Alert for fine particle pollution from wildfire smoke and high ozone levels. The alert remains in effect until 11 PM Monday for wildfire smoke and until 8 PM Monday for ozone.

Air Quality and Protective Actions

• Wildfire Smoke: If you see smoke or ash, remain indoors with windows and doors closed. Use air purifiers or air conditioning, avoiding any devices that draw in outside air.
• Ozone Pollution: Elevated ozone levels can cause respiratory issues, including trouble breathing, asthma attacks, and lung damage. Children, older adults, and those with pre-existing conditions like asthma or COPD are especially vulnerable.
• Avoid outdoor activities, especially strenuous exercises, and minimize the use of gasoline-powered equipment.

Recommendations for Residents

Residents are encouraged to stay updated on current and forecasted air quality levels via the South Coast Air Quality Management District website or mobile app. Additional information can also be found at the Mojave Desert Air Quality Management District website.

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