Fuente de datos: National Weather Service (NWS) Última verificación: 19 de julio de 2026

Calor extremo

Nota: Los detalles de las alertas del National Weather Service se muestran a continuación en inglés (idioma original de la fuente). Los encabezados, categorías y resumen están en español.

Heat Advisory (AVISO) - expira July 19, 2026 at 2:15 PM EDT

Áreas afectadas: Koochiching; North St. Louis; Northern Cook/Northern Lake; North Itasca; Central St. Louis; North Cass; South Itasca; South Cass; Crow Wing; Northern Aitkin; South Aitkin; Carlton/South St. Louis; Pine; Douglas; Bayfield; Ashland; Burnett; Washburn; Sawyer

Heat Advisory issued July 19 at 1:12AM CDT until July 19 at 8:00PM CDT by NWS Duluth MN

• WHAT...Heat index values up to 95 expected.

• WHERE...In Minnesota, Crow Wing, Aitkin, Pine, Koochiching, Cass, Itasca, Carlton, St. Louis, and Northern Cook and Lake Counties. In Wisconsin, Ashland, Bayfield, Burnett, Douglas, Sawyer, and Washburn Counties. This includes the Tribal Lands of the Fond du Lac Band, the Bad River Reservation, the Red Cliff Band, the St. Croix Band in Burnett County, the Lac Courte Oreilles Reservation, the Mille Lacs Band, Hinckley, Lena Lake, Big Sandy Lake and, East Lake areas and the Bois Forte Band, Nett Lake, Deer Creek and, Lake Vermilion areas. Other locations including Voyageurs National Park, Madeline Island and the Apostle Islands National Lakeshore. The entire Boundary Waters is also included.

• WHEN...From 11 AM this morning to 8 PM CDT this evening.

• IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Qué hacer: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.

Fuente: NWS Duluth MN

Calidad del aire

Air Quality Alert (AVISO) - expira July 19, 2026 at 8:00 PM EDT

Áreas afectadas: North St. Louis; Northern Cook/Northern Lake; Central St. Louis; Southern Lake/North Shore; Southern Cook/North Shore; Carlton/South St. Louis

Air Quality Alert issued July 18 at 3:40PM CDT by NWS Duluth MN

• WHAT...The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index (AQI) is expected to reach the Red or Unhealthy category.

• WHERE...East central, southeast, south central, and northeast Minnesota.

• WHEN...Until 7 PM CDT Sunday.

• IMPACTS...Some members of the general public may experience health effects. Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, may experience health effects.

• ADDITIONAL DETAILS...Heavy smoke from wildfires will persist across northeast Minnesota tonight into Sunday morning. Increasing southwesterly winds Sunday afternoon will lead to improved air quality for much of northeast Minnesota, though near the wildfires and near the shores of Lake Superior may continue to experience poor air quality through the Sunday afternoon. The alert for this part of the state is currently set to expire at 7 pm Sunday. Only localized poor air quality near the wildfires will continue thereafter. Heavy smoke is expected to then enter southeastern and far east central Minnesota from the east early Sunday morning and persist through Monday morning. Red, meaning unhealthy for everyone, is the expected AQI category for all of this alert.

Qué hacer: Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, should avoid prolonged or heavy exertion. The general public should limit prolonged or heavy exertion. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Reduce vehicle trips and vehicle idling as much as possible. Keep windows closed overnight to prevent smoke from getting indoors.

Fuente: NWS Duluth MN

Air Quality Alert (AVISO) - expira July 20, 2026 at 12:00 PM EDT

Áreas afectadas: Wabasha; Dodge; Olmsted; Winona; Mower; Fillmore; Houston

Air Quality Alert issued July 18 at 3:39PM CDT by NWS La Crosse WI

• WHAT...The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index (AQI) is expected to reach the Red or Unhealthy category.

• WHERE...East central, southeast, south central, and northeast Minnesota.

• WHEN...From 3 AM CDT Sunday until 11 AM CDT Monday.

• IMPACTS...Some members of the general public may experience health effects. Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, may experience health effects.

• ADDITIONAL DETAILS...Heavy smoke from wildfires will persist across northeast Minnesota tonight into Sunday morning. Increasing southwesterly winds Sunday afternoon will lead to improved air quality for much of northeast Minnesota, though areas near the shores of Lake Superior and the wildfires themselves may continue to experience poor air quality through the afternoon. The alert for this part of the state is currently set to expire at 7 p.m. Sunday. Only localized poor air quality near the wildfires will continue thereafter. Heavy smoke is expected to then enter southeastern and far east central Minnesota from the east early Sunday morning and persist through Monday morning. Red, meaning unhealthy for everyone, is the expected AQI category for all of this alert.

Qué hacer: Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, should avoid prolonged or heavy exertion. The general public should limit prolonged or heavy exertion. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Reduce vehicle trips and vehicle idling as much as possible. Keep windows closed overnight to prevent smoke from getting indoors.

For information on current air quality conditions in your area and to sign up for daily air quality forecasts and alert notifications by email, text message, phone, or the EPA AirNow mobile app, visit https://www.pca.state.mn.us/air- water-land- climate/current-air- quality-conditions. You can find additional information about health and air quality at https://www.pca.state.mn.us/air-water-land- climate/air-quality- and-health. Poor air quality can impact pets and animals.

Fuente: NWS La Crosse WI

Air Quality Alert (AVISO) - expira July 20, 2026 at 12:00 PM EDT

Áreas afectadas: Chisago; Washington; Dakota; Rice; Goodhue; Steele; Freeborn

Air Quality Alert issued July 18 at 3:32PM CDT by NWS Twin Cities/Chanhassen MN

• WHAT...The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index (AQI) is expected to reach the Red or Unhealthy category.

• WHERE...East central, southeast, south central, and northeast Minnesota.

• WHEN...From 3 AM CDT Sunday until 11 AM CDT Monday.

• IMPACTS...Some members of the general public may experience health effects. Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, may experience health effects.

• ADDITIONAL DETAILS...Heavy smoke from wildfires will persist across northeast Minnesota tonight into Sunday morning. Increasing southwesterly winds Sunday afternoon will lead to improved air quality for much of northeast Minnesota, though areas near the shores of Lake Superior and the wildfires themselves may continue to experience poor air quality through the afternoon. The alert for this part of the state is currently set to expire at 7 p.m. Sunday. Only localized poor air quality near the wildfires will continue thereafter. Heavy smoke is expected to then enter southeastern and far east central Minnesota from the east early Sunday morning and persist through Monday morning. Red, meaning unhealthy for everyone, is the expected AQI category for all of this alert.

Qué hacer: Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, should avoid prolonged or heavy exertion. The general public should limit prolonged or heavy exertion.

Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Reduce vehicle trips and vehicle idling as much as possible.

Keep windows closed overnight to prevent smoke from getting indoors.

Fuente: NWS Twin Cities/Chanhassen MN

Air Quality Alert (AVISO) - expira July 20, 2026 at 12:00 PM EDT

Áreas afectadas: North St. Louis; Northern Cook/Northern Lake; Central St. Louis; Southern Lake/North Shore; Southern Cook/North Shore; Carlton/South St. Louis

Air Quality Alert issued July 18 at 10:37AM CDT by NWS Duluth MN

• WHAT...The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index (AQI) is expected to reach the Maroon or Hazardous category.

• WHERE...Northeast Minnesota.

• WHEN...Until 11 AM CDT Monday.

• IMPACTS...Everyone is more likely to be affected.

• ADDITIONAL DETAILS...Heavy smoke is expected to persist across much of northeastern Minnesota through the weekend and into Monday. A separate area of heavy smoke will move across northwestern Minnesota this morning and afternoon. Northwestern Minnesota should see improved air quality by this evening. Additional heavy smoke may move south from Canada this weekend, and the air quality alert may need to be extended into east central and southeastern Minnesota.

Qué hacer: Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, should remain indoors and keep activity levels low. The general public should avoid all physical activities outdoors. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Reduce vehicle trips and vehicle idling as much as possible. Keep windows closed overnight to prevent smoke from getting indoors.

Fuente: NWS Duluth MN

Air Quality Alert (AVISO) - expira July 20, 2026 at 12:00 PM EDT

Áreas afectadas: North St. Louis; Northern Cook/Northern Lake; Central St. Louis; Southern Lake/North Shore; Southern Cook/North Shore; Carlton/South St. Louis

Air Quality Alert issued July 17 at 12:36PM CDT by NWS Duluth MN

• WHAT...The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index (AQI) is expected to reach the Maroon or Hazardous category.

• WHERE...Northeast Minnesota.

• WHEN...Until 11 AM CDT Monday.

• IMPACTS...Everyone is more likely to be affected.

• ADDITIONAL DETAILS...While heavy smoke retreats across portions of north central and northeastern Minnesota today, heavy smoke is expected to persist across much of northeastern Minnesota through the weekend and into Monday. A separate area of heavy smoke will move across northwestern Minnesota this morning and afternoon. Northwestern Minnesota should see improved air quality by this evening. Additional heavy smoke may move south from Canada this weekend, and the air quality alert may need to be extended into east central and southeastern Minnesota.

Qué hacer: Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, should remain indoors and keep activity levels low. The general public should avoid all physical activities outdoors. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Reduce vehicle trips and vehicle idling as much as possible. Keep windows closed overnight to prevent smoke from getting indoors.

Fuente: NWS Duluth MN

Air Quality Alert (AVISO) - expira July 20, 2026 at 12:00 PM EDT

Áreas afectadas: Koochiching; North Itasca; South Itasca; Northern Aitkin

Air Quality Alert issued July 17 at 12:36PM CDT by NWS Duluth MN

• WHAT...The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index (AQI) is expected to reach the Purple or Very Unhealthy category.

• WHERE...Northeast Minnesota.

• WHEN...Until 6 PM CDT Friday.

• IMPACTS...Everyone is more likely to be affected.

• ADDITIONAL DETAILS...While heavy smoke retreats across portions of north central and northeastern Minnesota today, heavy smoke is expected to persist across much of northeastern Minnesota through the weekend and into Monday. A separate area of heavy smoke will move across northwestern Minnesota this morning and afternoon. Northwestern Minnesota should see improved air quality by this evening. Additional heavy smoke may move south from Canada this weekend, and the air quality alert may need to be extended into east central and southeastern Minnesota.

Qué hacer: Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, should avoid all physical activity outdoors. The general public should avoid prolonged or heavy exertion. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Reduce vehicle trips and vehicle idling as much as possible. Keep windows closed overnight to prevent smoke from getting indoors.

Fuente: NWS Duluth MN

Air Quality Alert (AVISO) - expira July 20, 2026 at 12:00 PM EDT

Áreas afectadas: North Cass; South Cass; Crow Wing; South Aitkin; Pine

Air Quality Alert issued July 17 at 12:36PM CDT by NWS Duluth MN

• WHAT...The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index (AQI) is expected to reach the Red or Unhealthy category.

• WHERE...Northeast Minnesota.

• WHEN...Until 6 PM CDT Friday.

• IMPACTS...Everyone is more likely to be affected.

• ADDITIONAL DETAILS...While heavy smoke retreats across portions of north central and northeastern Minnesota today, heavy smoke is expected to persist across much of northeastern Minnesota through the weekend and into Monday. A separate area of heavy smoke will move across northwestern Minnesota this morning and afternoon. Northwestern Minnesota should see improved air quality by this evening. Additional heavy smoke may move south from Canada this weekend, and the air quality alert may need to be extended into east central and southeastern Minnesota.

Qué hacer: Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, should avoid prolonged or heavy exertion. The general public should limit prolonged or heavy exertion. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Reduce vehicle trips and vehicle idling as much as possible. Keep windows closed overnight to prevent smoke from getting indoors.

Fuente: NWS Duluth MN

Air Quality Alert (AVISO) - expira July 20, 2026 at 12:00 PM EDT

Áreas afectadas: Koochiching; North St. Louis; Northern Cook/Northern Lake; North Itasca; Central St. Louis; Southern Lake/North Shore; Southern Cook/North Shore; North Cass; South Itasca; South Cass; Crow Wing; Northern Aitkin; South Aitkin; Carlton/South St. Louis; Pine

Air Quality Alert issued July 16 at 5:04PM CDT by NWS Duluth MN

• WHAT...The Minnesota Pollution Control Agency has issued an Air Quality Alert for fine particles pollution. The Air Quality Index (AQI) is expected to reach the Maroon or Hazardous category.

• WHERE...East central and northeast Minnesota.

• WHEN...Until 11 AM CDT Monday.

• IMPACTS...Everyone is likely to be affected. Minor ashfall will be possible.

• ADDITIONAL DETAILS...Heavy smoke will continue across the alert area. Some improvement will be possible Friday as an area of low pressure approaches before air quality deteriorates again on Saturday.

Qué hacer: Sensitive groups, such as people with lung disease (including asthma), heart disease, and children and older adults, should remain indoors and keep activity levels low. The general public should avoid all physical activities outdoors. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Reduce vehicle trips and vehicle idling as much as possible. Keep windows closed overnight to prevent smoke from getting indoors.

Fuente: NWS Duluth MN

Fuente

Datos de alertas proporcionados por el National Weather Service (NWS). Esta página muestra únicamente alertas activas y se actualiza diariamente. Para información en tiempo real, visite weather.gov.