Communities adjacent to the polluted Tijuana River can now check both the air around them for contamination before they decide to venture outdoors.
Mackenzie Elmer is a reporter at Voice of San Diego. She focuses on climate change, the environment, and energy, covering topics such as water, agriculture, and real estate, particularly in California and San Diego. Mackenzie has been featured in San Diego Magazine and continues to contribute insightful journalism that emphasizes environmental issues and sustainability.