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Monitor the live Air Quality Index (AQI) in Williamson County. See real-time pollution metrics including PM2.5, PM10, and health advisories for outdoor activities.

Air Quality in Williamson County

US AQI Score

51
Moderate

Health Recommendation

Air quality is acceptable. However, there may be a risk for some people, particularly those who are unusually sensitive to air pollution.

GoodModUnhealthyHazardous

Major Pollutants Concentration

PM2.5

Fine Particulate Matter

21.8

µg/m³

Tiny particles that can enter the lungs and bloodstream.

PM10

Coarse Particulate Matter

21.8

µg/m³

Inhalable particles, such as those found near dusty roads or industries.

AQI Guidelines

  • 0-50 (Good): Ideal air quality for outdoor activities.
  • 51-100 (Moderate): Acceptable, but highly sensitive people should limit prolonged outdoor exertion.
  • 101-150 (Unhealthy for Sensitive Groups): Children, older adults, and people with lung disease should reduce exposure.
  • 151-200 (Unhealthy): Everyone may begin to experience health effects.

Air Quality in Williamson County - FAQ

The current Air Quality Index (US AQI) in Williamson County is 51, which is considered 'Moderate'.