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AQI Hourly Report for: Placerville, California

Hourly Conditions for: Placerville
Air Quality Index (AQI)
Observed At Time: 9:00 PDT
 Current AQI: 25  
GOOD
Health Message: Good - Healthy Air


0-50 Good
51-100 Moderate
101-150 Unhealthy for Sensitive Groups
151-200 Unhealthy
201-300 Very Unhealthy
301-500 Hazardous
Over Night Data Past 9:00PM Isn't Available.
Today's High Forecast
Air Quality Index (AQI)
Issued At: 9:00 PDT
 Today's AQI High: 51  
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.
  
Tomorrow's High Forecast
Air Quality Index (AQI)
Issued At: 9:00 PDT
 Tomorrow's AQI High: 84  
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion.

AQI Forecast Discussion
Forecast Discussion: Friday, a weak cold front will move across northern California, increasing vertical mixing. In addition, moderate and gusty onshore winds will aid dispersion of regional smoke. These conditions will cause particle levels to be high-Good in Yolo and Solano Counties, and Moderate in Sacramento and Placer Counties. Ozone levels on Friday will be Good to low-Moderate across the region. Saturday, winds will shift to northwesterly, which will transport smoke from the August Complex Fire into the Sacramento region, increasing particle concentrations. In addition, sunny skies and slightly warmer temperatures will increase ozone production. As a result, particle levels will be Unhealthy for Sensitive Groups across the region, while ozone levels will be Moderate. Sunday, light southeasterly winds early in the day will transport additional smoke from regional fires primarily into the Sierra Foothills, increasing particle concentrations. However, onshore winds in the afternoon and evening will aid dispersion. As a result, particle levels will be Unhealthy for Sensitive Groups in Placer County and Moderate in Sacramento, Yolo, and Solano Counties. Ozone levels on Sunday will remain Moderate region-wide.

Current Hourly Air Quality Index Map
AQI: Good AQI: Moderate AQI: Unhealthy for Sensitive Groups AQI: Unhealthy AQI: Very Unhealthy AQI: Hazardous

Today's Air Quality Forecast
AQI: Good AQI: Moderate AQI: Unhealthy for Sensitive Groups AQI: Unhealthy AQI: Very Unhealthy AQI: Hazardous

Today's Air Quality Timed Animation
AQI: Good AQI: Moderate AQI: Unhealthy for Sensitive Groups AQI: Unhealthy AQI: Very Unhealthy AQI: Hazardous

Today's U.S. AQI Combined PM & O3 Timed Animation
AQI: Good AQI: Moderate AQI: Unhealthy for Sensitive Groups AQI: Unhealthy AQI: Very Unhealthy AQI: Hazardous
United States 24 Hour Ozone Forecast






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