Data and Forecasts courtesy of:
Antelope Valley Air Quality Management District,
Bay Area Air Quality Management District,
California Air Resources Board,
Imperial County Air Pollution Control District,
Mendocino County Air Quality Management District,
Mojave Desert Air Quality Management District,
Monterey Bay Unified Air Pollution Control District,
Placer County Air Pollution Control District,
Sacramento Metropolitan Air Quality Management District,
San Diego County Air Pollution Control District,
San Joaquin Valley Air Pollution Control District,
San Luis Obispo County Air Pollution Control District,
Santa Barbara County Air Pollution Control District,
Siskiyou County Air Pollution Control District,
South Coast Air Quality Management District,
Ventura County Air Pollution Control District,
Yolo-Solano Air Quality Management District
Action Day
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Air Quality Index (AQI)
observed at 13:00 PDT
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Health Message: None |
Note: Values above 500 are considered Beyond the AQI. Follow recommendations for the Hazardous category. Additional information on reducing exposure to extremely high levels of particle pollution is available here. |
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Air Quality Index (AQI) |
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Good |
Health Message: None |
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Air Quality Index (AQI) |
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Moderate |
Health Message: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors. |
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Forecast Discussion: 4/25/18: Ozone - Better Breathers Alert: Ozone concentrations will increase significantly midday, afternoon and evening. People who are sensitive to air pollution should limit time outside during midday, afternoon and early evening. During periods of high ozone, health impacts of ozone air pollution can be minimized by reducing strenuous activities and staying indoors. San Luis Obispo County residents are encouraged to reduce emission causing activities by limiting vehicle use. |
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