Areas affected: Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 8 12:58 pm
Expired: Jul 9 3:00 am
Duration: 14 hrs 02 mins
Areas affected: Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 9 12:49 am
Expired: Jul 9 1:00 pm
Duration: 12 hrs 11 mins
Riverside County 4 alerts
EXTREME HEAT WARNING (3 updates)
Areas affected: Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 8 12:58 pm
Expired: Jul 9 3:00 am
Duration: 14 hrs 02 mins
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Jul 8 9:30 pm
Expired: Jul 9 6:15 am
Duration: 8 hrs 45 mins
Areas affected: Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 9 12:49 am
Expired: Jul 9 1:00 pm
Duration: 12 hrs 11 mins
AIR QUALITY ALERT
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Riverside County Mountains; Santa Ana Mountains and Foothills; Coachella Valley; San Gorgonio Pass Near Banning; Orange County Inland
Effective: Jul 7 3:58 pm
Expired: Jul 10 8:00 pm
Duration: 3 days 4 hrs 02 mins
HEAT ADVISORY (2 updates)
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Jul 8 9:30 pm
Expired: Jul 9 6:15 am
Duration: 8 hrs 45 mins
Areas affected: Riverside County Mountains; San Diego County Mountains
Effective: Jul 8 9:30 pm
Expired: Jul 9 6:15 am
Duration: 8 hrs 45 mins
EXTREME HEAT WATCH
Areas affected: Coachella Valley; San Diego County Deserts
Effective: Jul 6 12:44 pm
Expired: Jul 6 1:00 pm
Duration: 0 hrs 16 mins
San Bernardino County 3 alerts
EXTREME HEAT WARNING (3 updates)
Areas affected: Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 8 12:58 pm
Expired: Jul 9 3:00 am
Duration: 14 hrs 02 mins
Areas affected: Lake Havasu and Fort Mohave; Northwest Deserts; Lake Mead National Recreation Area; San Bernardino County-Upper Colorado River Valley; Lake Mead National Recreation Area
Effective: Jul 8 1:08 am
Expired: Jul 9 10:00 am
Duration: 1 day 8 hrs 52 mins
Areas affected: Joshua Tree NP West; Joshua Tree NP East; Imperial County Southwest; Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley
Effective: Jul 9 12:49 am
Expired: Jul 9 1:00 pm
Duration: 12 hrs 11 mins
AIR QUALITY ALERT
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Riverside County Mountains; Santa Ana Mountains and Foothills; Coachella Valley; San Gorgonio Pass Near Banning; Orange County Inland
Effective: Jul 7 3:58 pm
Expired: Jul 10 8:00 pm
Duration: 3 days 4 hrs 02 mins
HEAT ADVISORY
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire
Effective: Jul 8 9:30 pm
Expired: Jul 9 6:15 am
Duration: 8 hrs 45 mins
Orange County
AIR QUALITY ALERT
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Riverside County Mountains; Santa Ana Mountains and Foothills; Coachella Valley; San Gorgonio Pass Near Banning; Orange County Inland
Effective: Jul 7 3:58 pm
Expired: Jul 10 8:00 pm
Duration: 3 days 4 hrs 02 mins
San Diego County 4 alerts
AIR QUALITY ALERT
Areas affected: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Riverside County Mountains; Santa Ana Mountains and Foothills; Coachella Valley; San Gorgonio Pass Near Banning; Orange County Inland
Effective: Jul 7 3:58 pm
Expired: Jul 10 8:00 pm
Duration: 3 days 4 hrs 02 mins
HEAT ADVISORY (2 updates)
Areas affected: Riverside County Mountains; San Diego County Mountains
Effective: Jul 8 9:30 pm
Expired: Jul 9 6:15 am
Duration: 8 hrs 45 mins
Areas affected: San Diego County Inland Valleys
Effective: Jul 8 9:30 pm
Expired: Jul 9 6:15 am
Duration: 8 hrs 45 mins
EXTREME HEAT WARNING
Areas affected: Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning
Effective: Jul 8 9:30 pm
Expired: Jul 9 6:15 am
Duration: 8 hrs 45 mins
EXTREME HEAT WATCH
Areas affected: Coachella Valley; San Diego County Deserts
Effective: Jul 6 12:44 pm
Expired: Jul 6 1:00 pm
Duration: 0 hrs 16 mins
Ventura County
AIR QUALITY ALERT
Areas affected: Calabasas and Agoura Hills; Eastern San Fernando Valley; Eastern San Gabriel Mountains; Eastern Santa Monica Mountains Recreational Area; Interstate 5 Corridor; Los Angeles County Beaches; Los Angeles County Inland Coast including Downtown Los Angeles; Los Angeles County San Gabriel Valley; Santa Clarita Valley; Santa Susana Mountains; Western San Fernando Valley; Western San Gabriel Mountains and Highway 14 Corridor; Western Santa Monica Mountains Recreational Area
EXTREME HEAT WARNING 
AIR QUALITY ALERT 
HEAT ADVISORY 
EXTREME HEAT WATCH 
