Air Quality Information for the United States

Current Air Quality Alerts for the
United States Issued by the National Weather Service

Arkansas

Crittenden; DeSoto; Shelby
California

San Bernardino and Riverside County Valleys-The Inland Empire; Santa Ana Mountains and Foothills; San Gorgonio Pass Near Banning; Orange County Coastal; Orange County Inland
Eastern San Fernando Valley; Eastern Santa Monica Mountains Recreational Area; Los Angeles County Beaches; Los Angeles County Inland Coast including Downtown Los Angeles; Los Angeles County San Gabriel Valley; Malibu Coast; Palos Verdes Hills; Santa Clarita Valley; Santa Susana Mountains; Western San Fernando Valley; Western Santa Monica Mountains Recreational Area
Colorado

Larimer, CO; Weld, CO; Broomfield, CO; Adams, CO; Boulder, CO; Arapahoe, CO; Denver, CO; Jefferson, CO; Douglas, CO
Mississippi

Crittenden; DeSoto; Shelby
Tennessee

Crittenden; DeSoto; Shelby


AIRNow Alerts

  • Location: Antelope Vly, CA
    Alert: Ozone is forecast to reach 115 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: Bakersfield, CA
    Alert: Ozone is forecast to reach 105 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: Banning, CA
    Alert: Ozone is forecast to reach 122 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: Big Bear Lake, CA
    Alert: Ozone is forecast to reach 108 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: Brigham City, UT
    Alert: A(n) Health Advisory has been called for Fri 07/04/2025.
    Health Tip: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 09:22:30 MST
  • Location: C San Bernardino, CA
    Alert: Ozone is forecast to reach 140 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: C San Bernardino M, CA
    Alert: Ozone is forecast to reach 143 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: Coachella Vly, CA
    Alert: Ozone is forecast to reach 112 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: Denver-Boulder, CO
    Alert: Ozone is forecast to reach Unhealthy for Sensitive Groups on Thu 07/03/2025. A(n) Action Day has been called for Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 09:22:30 MST
  • Location: E San Bernardino, CA
    Alert: Ozone is forecast to reach 151 AQI - Unhealthy on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should avoid prolonged or heavy exertion outdoors. Everyone else, especially children, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: E San Gabriel Vly, CA
    Alert: Ozone is forecast to reach 118 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: Fort Collins, CO
    Alert: Ozone is forecast to reach Unhealthy for Sensitive Groups on Thu 07/03/2025. A(n) Action Day has been called for Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 09:22:30 MST
  • Location: Greeley, CO
    Alert: Ozone is forecast to reach Unhealthy for Sensitive Groups on Thu 07/03/2025. A(n) Action Day has been called for Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 09:22:30 MST
  • Location: Hernando, MS
    Alert: Ozone is forecast to reach 101 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025. A(n) has been called for Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 10:22:30 CST
  • Location: Kenosha and Racine Counties, WI
    Alert: Ozone is forecast to reach Unhealthy for Sensitive Groups on Fri 07/04/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 10:22:30 CST
  • Location: Manitowoc and Kewaunee Counties, WI
    Alert: Ozone is forecast to reach Unhealthy for Sensitive Groups on Fri 07/04/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 10:22:30 CST
  • Location: Memphis, TN
    Alert: Ozone is forecast to reach 101 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 10:22:30 CST
  • Location: Metro Riverside CO, CA
    Alert: Ozone is forecast to reach 108 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: Milwaukee and South Ozaukee Counties, WI
    Alert: Ozone is forecast to reach Unhealthy for Sensitive Groups on Fri 07/04/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 10:22:30 CST
  • Location: North Ozaukee and Sheboygan Counties, WI
    Alert: Ozone is forecast to reach Unhealthy for Sensitive Groups on Fri 07/04/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 10:22:30 CST
  • Location: Northern Virginia, VA
    Alert: Particle Pollution (2.5 microns) is forecast to reach 110 AQI - Unhealthy for Sensitive Groups on Fri 07/04/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 11:22:30 EST
  • Location: Northern Virginia/DC, DC
    Alert: Particle Pollution (2.5 microns) is forecast to reach 110 AQI - Unhealthy for Sensitive Groups on Fri 07/04/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 11:22:30 EST
  • Location: Ogden, UT
    Alert: A(n) Health Advisory has been called for Fri 07/04/2025.
    Health Tip: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 09:22:30 MST
  • Location: Perris Vly, CA
    Alert: Ozone is forecast to reach 101 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: Phelan, CA
    Alert: Ozone is forecast to reach 101 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: Provo, UT
    Alert: A(n) Health Advisory has been called for Fri 07/04/2025.
    Health Tip: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 09:22:30 MST
  • Location: Salt Lake City, UT
    Alert: A(n) Health Advisory has been called for Thu 07/03/2025. A(n) Health Advisory has been called for Fri 07/04/2025.
    Health Tip: Unusually sensitive people should consider reducing prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 09:22:30 MST
  • Location: San Gabriel Mts, CA
    Alert: Ozone is forecast to reach 108 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: Santa Clarita Vly, CA
    Alert: Ozone is forecast to reach 147 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:30 PST
  • Location: Victorville, CA
    Alert: Ozone is forecast to reach 112 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:31 PST
  • Location: W San Bernardino M, CA
    Alert: Ozone is forecast to reach 118 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:31 PST
  • Location: Yucca Vly, CA
    Alert: Ozone is forecast to reach 112 AQI - Unhealthy for Sensitive Groups on Thu 07/03/2025.
    Health Tip: Active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors
    Feed Last Updated: Wed, 02 Jul 2025 08:22:31 PST