* WHAT. Dangerously hot conditions with temperatures up to 100 to 105 possible, and upwards of 105 to 115 possible over interior valleys and foothills including the Antelope Valley. * WHERE. A portion of southwest California. * WHEN. From Tuesday morning through Saturday, July 06. * IMPACTS. Heat related illnesses increase significantly during extreme heat events. Warm overnight low temperatures, especially late next week, will worsen the effects of extreme heat. * ADDITIONAL DETAILS. Very warm to hot conditions will have the potential to bring significant heat impacts to the coast, starting on Wednesday and continuing through the remainder of next week. Heat headlines may need to be expanded to include a larger portion of Southern California in later forecasts.

* WHAT. Dangerously hot conditions with temperatures up to 100 to 105 possible, and upwards of 105 to 115 possible over interior valleys and foothills including the Antelope Valley. * WHERE. A portion of southwest California. * WHEN. From Tuesday morning through late Friday night. * IMPACTS. Heat related illnesses increase significantly during extreme heat events. Warm overnight low temperatures, especially late in the week, will worsen the effects of extreme heat. * ADDITIONAL DETAILS. Very warm to hot conditions will have the potential to bring significant heat impacts to the coast, starting on Wednesday and continuing through the remainder of the week. Heat headlines may need to be expanded to include a larger portion of Southern California in later forecasts.

* WHAT. Dangerously hot conditions with temperatures up to 95 to 105 possible, and upwards of 105 to 110 possible over valleys well away from the coast. * WHERE. Portions of the coastal ranges and valleys of Southern California. * WHEN. From Wednesday morning through Monday, July 08. * IMPACTS. Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS. Very warm to hot conditions will have the potential to bring significant heat impacts to the coast, starting on Wednesday and continuing through the remainder of next week. Heat headlines may need to be expanded to include a larger portion of Southern California in later forecasts.

* WHAT. Dangerously hot conditions with temperatures up to 95 to 105 possible, and upwards of 105 to 110 possible over valleys well away from the coast. * WHERE. Portions of the coastal ranges, foothills, and valleys of Southern California. * WHEN. From Wednesday morning through early Monday morning, July 08. * IMPACTS. Heat related illnesses increase significantly during extreme heat events. * ADDITIONAL DETAILS. Very warm to hot conditions will have the potential to bring significant heat impacts to the coast. Heat headlines may need to be expanded to include a larger portion of Southern California in later forecasts.

The South Coast AQMD has issued an air quality alert in inland parts of the South Coast Air Basin and the Coachella Valley due to high levels of ozone (smog). The air quality alert is in effect 11 AM Wednesday through 7 PM Saturday. Elevated levels of ozone the predominant summertime pollutant are likely to result in poor air quality in the afternoon and early- evening hours. Ozone air pollution can cause respiratory health problems, including trouble breathing, asthma attacks, and lung damage. Children, older adults, and people with asthma or COPD may be more sensitive to the health effects of ozone. Exposure to particle pollution can cause serious health problems, aggravate heart and lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. People with respiratory or heart disease, older adults, and children are particularly susceptible. Air quality can change depending on time of day and weather conditions. Increased emissions of chemicals and faster ozone formation rates due to heat, along with low winds and stagnant weather can cause unusually high and persistent levels of ozone pollution. To help minimize ozone air pollution levels: * Limit the use of gasoline powered lawn and garden equipment until evening hours * Conserve electricity and set your air conditioner at a higher temperature * Try to delay trips to the gas station and the use of household chemicals until the evening To help keep indoor air clean during periods of poor air quality, close all windows and doors and run your air conditioner and/or an air purifier. If possible, do not use whole house fans or swamp coolers that bring in outside air. Avoid burning wood in your fireplace or firepit and minimize sources of indoor air pollution such as candles, incense, pan-frying, and grilling. Limit the use of gasoline powered lawn and garden equipment. Check air quality levels and take appropriate action as needed. When air quality index (AQI) levels are Unhealthy for Sensitive Groups (orange), people with heart or lung disease, pregnant women, children, and older adults should limit prolonged or heavy outdoor exertion. When air quality reaches Unhealthy (red) AQI levels, everyone may experience adverse health effects and sensitive groups should avoid prolonged time outdoors. At Very Unhealthy (purple) AQI levels, sensitive groups should avoid all outdoor physical activity and everyone else should avoid prolonged or heavy outdoor exertion. In the South Coast Air Basin and Coachella Valley, to view current and forecasted air quality levels, visit the South Coast Air Quality Management District website at aqmd.gov or download the mobile app at www.aqmd.gov/mobileapp. Additional details for this air quality alert may be available at www.aqmd.gov/advisory. In the Mojave Desert, to view current and forecasted air quality levels, visit the Mojave Desert Air Quality Management District website at mdaqmd.ca.gov. Additional details for this air quality alert may be available at www.mdaqmd.ca.gov/advisories. In Antelope Valley, to view current and forecasted air quality levels, visit the antelope Valley Air Quality Management District website at www.avaqmd.ca.gov. in San Diego County, to view current and forecasted air quality levels, visit the San Diego County Air Pollution Control District website at www.sdapcd.org/content/sdapcd/air-quality.html. Additional details for this air quality alert may be available at www.sdapcd.org/content/sdapcd/air-quality/smoke-advisory.html For the latest air quality forecasts and information, visit the website at aqmd.gov.

* WHAT. Dangerously hot conditions with high temperatures of 107 to 112. * WHERE. Apple and Lucerne Valleys. * WHEN. Until 9 PM PDT Wednesday. * IMPACTS. Heat related illnesses increase significantly during extreme heat events.

* WHAT. Dangerously hot conditions with high temperatures of 98 to 103 expected, generally at elevations below 5000 feet. * WHERE. Riverside County Mountains, San Bernardino County Mountains, and San Diego County Mountains. * WHEN. From 11 AM Friday to 9 PM PDT Saturday. * IMPACTS. Heat related illnesses increase significantly during extreme heat events.

* WHAT. Dangerously hot conditions with high temperatures of 103 to 108 expected. * WHERE. San Bernardino and Riverside County Valleys-The Inland Empire. * WHEN. From 11 AM Friday to 9 PM PDT Saturday. * IMPACTS. Heat related illnesses increase significantly during extreme heat events.

* WHAT. High temperatures of 94 to 99 expected. * WHERE. Santa Ana Mountains and Foothills. * WHEN. From 11 AM Friday to 9 PM PDT Saturday. * IMPACTS. Hot temperatures may cause heat illnesses.

* WHAT. Dangerously hot conditions with temperatures up to 95 to 105 possible, and upwards of 105 to 110 possible in the valleys well away from the coast. * WHERE. A portion of southwest California. * WHEN. Until 6 PM PDT Monday. * IMPACTS. Heat related illnesses increase significantly during extreme heat events.

AIR QUALITY ALERT IN EFFECT FOR ELEVATED OZONE FROM 11 AM WEDNESDAY TO 7 PM PDT SATURDAY. The South Coast Air Quality Management District has issued an Air Quality Alert due to elevated ozone air pollution. This Air Quality Alert is in effect from 11 AM Wednesday to 7 PM PDT Saturday. Elevated levels of ozone the predominant summertime pollutant are likely to result in poor air quality in the afternoon and early- evening hours. Ozone air pollution can cause respiratory health problems, including trouble breathing, asthma attacks, and lung damage. Children, older adults, and people with asthma or COPD may be more sensitive to the health effects of ozone. Air quality can change depending on time of day and weather conditions. Increased emissions of chemicals and faster ozone formation rates due to heat, along with low winds and stagnant weather can cause unusually high and persistent levels of ozone pollution. To help minimize ozone air pollution levels: - Limit the use of gasoline powered lawn and garden equipment until the evening hours - Conserve electricity and set your air conditioner at a higher temperature - Try to delay trips to the gas station and the use of household chemicals until the evening Check air quality levels and take appropriate action as needed. When air quality index (AQI) levels are Unhealthy for Sensitive Groups (orange), people with heart or lung disease, pregnant women, children, and older adults should limit prolonged or heavy outdoor exertion. When air quality reaches Unhealthy (red) AQI levels, everyone may experience adverse health effects and sensitive groups should avoid prolonged time outdoors. At Very Unhealthy (purple) AQI levels, sensitive groups should avoid all outdoor physical activity and everyone else should avoid prolonged or heavy outdoor exertion. To view current and forecasted air quality levels, visit the South Coast Air Quality Management District website at aqmd.gov or download the mobile app at www.aqmd.gov/mobileapp. Additional details for this air quality alert may be available at www.aqmd.gov/advisory. For the additional information, call the South Coast Air Quality Management District.

The South Coast AQMD has issued an air quality alert in inland parts of the South Coast Air Basin and the Coachella Valley due to high levels of ozone (smog). The air quality alert is in effect 11 AM Wednesday through 7 PM Saturday. Elevated levels of ozone the predominant summertime pollutant are likely to result in poor air quality in the afternoon and early- evening hours. Ozone air pollution can cause respiratory health problems, including trouble breathing, asthma attacks, and lung damage. Children, older adults, and people with asthma or COPD may be more sensitive to the health effects of ozone. Exposure to particle pollution can cause serious health problems, aggravate heart and lung disease, cause asthma attacks and acute bronchitis, and increase risk of respiratory infections. People with respiratory or heart disease, older adults, and children are particularly susceptible. Air quality can change depending on time of day and weather conditions. Increased emissions of chemicals and faster ozone formation rates due to heat, along with low winds and stagnant weather can cause unusually high and persistent levels of ozone pollution. To help minimize ozone air pollution levels: * Limit the use of gasoline powered lawn and garden equipment until evening hours * Conserve electricity and set your air conditioner at a higher temperature * Try to delay trips to the gas station and the use of household chemicals until the evening To help keep indoor air clean during periods of poor air quality, close all windows and doors and run your air conditioner and/or an air purifier. If possible, do not use whole house fans or swamp coolers that bring in outside air. Avoid burning wood in your fireplace or firepit and minimize sources of indoor air pollution such as candles, incense, pan-frying, and grilling. Limit the use of gasoline powered lawn and garden equipment. Check air quality levels and take appropriate action as needed. When air quality index (AQI) levels are Unhealthy for Sensitive Groups (orange), people with heart or lung disease, pregnant women, children, and older adults should limit prolonged or heavy outdoor exertion. When air quality reaches Unhealthy (red) AQI levels, everyone may experience adverse health effects and sensitive groups should avoid prolonged time outdoors. At Very Unhealthy (purple) AQI levels, sensitive groups should avoid all outdoor physical activity and everyone else should avoid prolonged or heavy outdoor exertion. In the South Coast Air Basin and Coachella Valley, to view current and forecasted air quality levels, visit the South Coast Air Quality Management District website at aqmd.gov or download the mobile app at www.aqmd.gov/mobileapp. Additional details for this air quality alert may be available at www.aqmd.gov/advisory. In the Mojave Desert, to view current and forecasted air quality levels, visit the Mojave Desert Air Quality Management District website at mdaqmd.ca.gov. Additional details for this air quality alert may be available at www.mdaqmd.ca.gov/advisories. In Antelope Valley, to view current and forecasted air quality levels, visit the antelope Valley Air Quality Management District website at www.avaqmd.ca.gov. in San Diego County, to view current and forecasted air quality levels, visit the San Diego County Air Pollution Control District website at www.sdapcd.org/content/sdapcd/air-quality.html. Additional details for this air quality alert may be available at www.sdapcd.org/content/sdapcd/air-quality/smoke-advisory.html For the latest air quality forecasts and information, visit the website at aqmd.gov.

The South Coast AQMD has issued an air quality alert in inland parts of the South Coast Air Basin and the Coachella Valley due to high levels of ozone (smog). The air quality alert is in effect 11 AM Wednesday through 7 PM Saturday. Elevated levels of ozone the predominant summertime pollutant are likely to result in poor air quality in the afternoon and early- evening hours. Ozone air pollution can cause respiratory health problems, including trouble breathing, asthma attacks, and lung damage. Children, older adults, and people with asthma or COPD may be more sensitive to the health effects of ozone. Air quality can change depending on time of day and weather conditions. Increased emissions of chemicals and faster ozone formation rates due to heat, along with low winds and stagnant weather can cause unusually high and persistent levels of ozone pollution. To help minimize ozone air pollution levels: * Limit the use of gasoline powered lawn and garden equipment until evening hours * Conserve electricity and set your air conditioner at a higher temperature * Try to delay trips to the gas station and the use of household chemicals until the evening Check air quality levels and take appropriate action as needed. When air quality index (AQI) levels are Unhealthy for Sensitive Groups (orange), people with heart or lung disease, pregnant women, children, and older adults should limit prolonged or heavy outdoor exertion. When air quality reaches Unhealthy (red) AQI levels, everyone may experience adverse health effects and sensitive groups should avoid prolonged time outdoors. At Very Unhealthy (purple) AQI levels, sensitive groups should avoid all outdoor physical activity and everyone else should avoid prolonged or heavy outdoor exertion. In the South Coast Air Basin and Coachella Valley, to view current and forecasted air quality levels, visit the South Coast Air Quality Management District website at aqmd.gov or download the mobile app at www.aqmd.gov/mobileapp. Additional details for this air quality alert may be available at www.aqmd.gov/advisory. In the Mojave Desert, to view current and forecasted air quality levels, visit the Mojave Desert Air Quality Management District website at mdaqmd.ca.gov. Additional details for this air quality alert may be available at www.mdaqmd.ca.gov/advisories. In Antelope Valley, to view current and forecasted air quality levels, visit the antelope Valley Air Quality Management District website at www.avaqmd.ca.gov. in San Diego County, to view current and forecasted air quality levels, visit the San Diego County Air Pollution Control District website at www.sdapcd.org/content/sdapcd/air-quality.html. Additional details for this air quality alert may be available at www.sdapcd.org/content/sdapcd/air-quality/smoke-advisory.html For the latest air quality forecasts and information, visit the website at aqmd.gov.

The South Coast Air Quality Management District has issued an Air Quality Alert due to elevated ozone air pollution. This Air Quality Alert is in effect from 11 AM Wednesday to 7 PM PDT Saturday. Elevated levels of ozone the predominant summertime pollutant are likely to result in poor air quality in the afternoon and early- evening hours. Ozone air pollution can cause respiratory health problems, including trouble breathing, asthma attacks, and lung damage. Children, older adults, and people with asthma or COPD may be more sensitive to the health effects of ozone. Air quality can change depending on time of day and weather conditions. Increased emissions of chemicals and faster ozone formation rates due to heat, along with low winds and stagnant weather can cause unusually high and persistent levels of ozone pollution. To help minimize ozone air pollution levels: - Limit the use of gasoline powered lawn and garden equipment until the evening hours - Conserve electricity and set your air conditioner at a higher temperature - Try to delay trips to the gas station and the use of household chemicals until the evening Check air quality levels and take appropriate action as needed. When air quality index (AQI) levels are Unhealthy for Sensitive Groups (orange), people with heart or lung disease, pregnant women, children, and older adults should limit prolonged or heavy outdoor exertion. When air quality reaches Unhealthy (red) AQI levels, everyone may experience adverse health effects and sensitive groups should avoid prolonged time outdoors. At Very Unhealthy (purple) AQI levels, sensitive groups should avoid all outdoor physical activity and everyone else should avoid prolonged or heavy outdoor exertion. To view current and forecasted air quality levels, visit the South Coast Air Quality Management District website at aqmd.gov or download the mobile app at www.aqmd.gov/mobileapp. Additional details for this air quality alert may be available at www.aqmd.gov/advisory. For the additional information, call the South Coast Air Quality Management District.