Pollution Alert: Maricopa Faces Severe Air Quality Crisis

The Arizona Department of Environmental Quality (ADEQ) has issued a high pollution advisory for all of Pinal County today, due to expected strong winds and heavy blowing dust.

The state forecasts worsening conditions, culminating in a significant rise in PM-10 concentrations. PM-10 refers to particulate matter smaller than 10 micrometers, which can pose serious health risks, particularly to vulnerable populations, including children, the elderly, and individuals with pre-existing respiratory conditions.

According to the Environmental Protection Agency (EPA), PM-10 levels in Pinal County are among the highest in the nation. The agency has classified western Pinal County as a nonattainment area, underscoring the persistent issue of air quality in the region.

Blowing dust is already impacting State Route 347 near Riggs Road, raising safety concerns for drivers. The Arizona Department of Transportation warns against driving into dust storms due to the dangers they pose.

Today’s PM-10 levels are alarmingly high, reaching 102 micrograms per cubic meter—four times the typical concentration of 25 to 40 micrograms seen on an average day in Maricopa.

The surge in particulate pollution is attributed to a combination of factors, including windblown dust from arid desert landscapes, agricultural practices, and disturbances from construction and unpaved roads.

To mitigate health risks during this advisory, the National Weather Service recommends minimizing travel, avoiding dirt roads, and refraining from using fireplaces or gas-powered lawn equipment.

Cautious conditions are expected to persist, with the most severe impacts anticipated this afternoon until approximately 5 p.m. Windy conditions are likely to continue into the evening.

The ADEQ reiterated that adverse health effects intensify as air quality declines, underscoring the importance of public awareness and safety during high pollution events.