
LAS VEGAS — Clark County air quality officials issued a dust advisory for Thursday, Aug. 20, after thunderstorms in Arizona pushed airborne dust into Southern Nevada and the Las Vegas Valley.
Clark County Environment & Sustainability’s Division of Air Quality said early morning storms in Arizona generated winds capable of transporting dust across the region. The conditions could affect air quality as dust remains suspended in the atmosphere.
Airborne dust contains particulate matter, commonly known as PM. These small particles can enter the respiratory system and may aggravate existing heart and lung conditions. Clark County regularly monitors particulate pollution throughout the Las Vegas Valley.
People with heart or lung disease, older adults and children may face greater risks when particulate levels rise. Physical activity can also increase exposure because people breathe more heavily during exercise.

Understanding the Air Quality Index
The U.S. Environmental Protection Agency uses the Air Quality Index, or AQI, to provide an easy way for the public to understand current pollution levels.
An AQI reading of 101 or higher reaches a level considered potentially unhealthy for sensitive groups. Residents can check local monitoring information throughout the day as conditions change.
Clark County operates monitoring stations across the Las Vegas Valley that track pollutants including particulate matter, ozone and other air contaminants.

How Residents Can Reduce Dust Exposure
Officials recommend limiting strenuous outdoor activity when blowing dust is present. Residents should keep windows and doors closed and use air conditioning in homes and vehicles to help filter particles.
Dirty indoor air filters may also need replacement. Drivers should slow down on unpaved roads because higher speeds can send additional dust into the air.
Residents should avoid cutting across vacant lots and use off-road vehicles only in approved areas outside the urban Las Vegas Valley. Clark County has issued the same precautions during previous dust advisories.
Anyone who sees excessive blowing dust coming from a construction site, vacant lot or facility can report it to Clark County Environment & Sustainability at 702-385-DUST (3878).
Residents can follow changing conditions through the county’s daily air-quality monitoring system. Clark County Daily Air Quality Monitoring

https://desaqmonitoring.clarkcountynv.gov
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