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Gusty Winds, Wildfire Smoke Prompt Health Caution
air

Gusty winds are causing localized blowing dust, which can result in elevated concentrations of particulate matter 10 microns and smaller (PM10). As a result, local air pollution officials are issuing a health cautionary statement effective Sunday and Monday, Oct. 25 and 26, for San Joaquin, Stanislaus, Merced, Madera, and Fresno counties.

In addition, the SQF Complex Fire in Tulare County, Creek Fire in Madera/Fresno counties and other California wildfires continue to generate smoke, which contains particulate matter pollution (PM2.5). Smoke impacts are expected to continue until the fires are extinguished.

Exposure to particulate matter pollution can trigger asthma attacks, aggravate chronic bronchitis, and increase the risk of heart attack and stroke. Individuals with heart or lung disease should follow their doctors’ advice for dealing with episodes of PM exposure. Those with existing respiratory conditions, including COVID-19, young children and the elderly, are especially susceptible to the health effects from this form of pollution. Anyone experiencing poor air quality due to wildfire smoke should move indoors, to a filtered, air-conditioned environment with windows closed. The common cloth and paper masks individuals are wearing due to COVID-19 concerns may not protect them from wildfire smoke.

Residents can use the District’s Real-time Air Advisory Network (RAAN) to track air quality at any Valley location by visiting myRAAN.com. District air monitoring stations are designed to detect microscopic PM 2.5 particles that exist in smoke. However, larger particles, such as ash, may not be detected. If you smell smoke or see falling ash in your immediate vicinity, consider air quality “unhealthy” (RAAN Level 4 or higher) even if RAAN displays lower level of pollution.

The public can also check the District’s wildfire page at www.valleyair.org/wildfires for information about any current and recently past wildfires affecting the Valley. In addition, anyone can follow air quality conditions by downloading the free “Valley Air” app on their mobile device.

For more information, visit www.valleyair.org or call the District office in Modesto at 209-557-6400.