Data source: National Weather Service (NWS) Last verified: July 17, 2026

Air Quality

Air Quality Alert (ADVISORY) - expires July 17, 2026 at 4:00 PM EDT

Areas affected: Carroll; Warren; Tippecanoe; Clinton; Howard; Fountain; Montgomery; Boone; Tipton; Hamilton; Madison; Delaware; Randolph; Vermillion; Parke; Putnam; Hendricks; Marion; Hancock; Henry; Vigo; Clay; Owen; Morgan; Johnson; Shelby; Rush; Sullivan; Monroe; Brown; Bartholomew; Decatur

Air Quality Alert issued July 17 at 3:47AM EDT by NWS Indianapolis IN

The officials at the Indiana Department of Environmental Management have declared an Air Quality Action Day, IN EFFECT UNTIL MIDNIGHT EDT TONIGHT.

An Air Quality Action Day for PM 2.5 has been issued. Fine particulate levels are expected to be in the Unhealthy for Sensitive Groups range. Active children and adults, and people with respiratory disease, such as asthma should limit prolonged outdoor exposure.

Here are some recommended actions that the public can take:

• Walk, bike, carpool or use public transportation.
• Avoid using the drive-through and combine errands into one trip.
• Avoid refueling your vehicle or using gasoline-powered lawn equipment until after 7pm.
• Turn off your engine when idling for more than 30 seconds.
• Conserve energy by turning off lights or setting the air conditioner to 75 degrees or above.

For additional information, please visit the IDEM Smog page at:

http://www.in.gov/idem/airmonitoring/smogwatch/

Source: NWS Indianapolis IN

Air Quality Alert (ADVISORY) - expires July 18, 2026 at 12:00 AM EDT

Areas affected: Dearborn; Boone; Kenton; Campbell; Butler; Warren; Hamilton; Clermont

Air Quality Alert issued July 17 at 12:43AM EDT by NWS Wilmington OH

The Southwest Ohio Air Quality Agency has issued an Air Quality Advisory for Butler, Clermont, Hamilton and Warren counties in Ohio; Boone, Campbell and Kenton counties in Kentucky; and Dearborn County in Indiana, until midnight EDT tonight.

Fine particulate levels are expected to be in the 'Unhealthy for Sensitive Groups' range. Active children and adults, and people with respiratory disease, such as asthma should limit prolonged outdoor exposure.

For additional information, please visit the Southwest Ohio Air Quality Agency's web site at www.southwestohioair.org/local_air_quality.

Additionally, the Ohio Environmental Protection Agency has issued a statewide Air Quality Advisory for the entire state of Ohio as smoke from Canadian wildfires continues to adversely impact air quality.

Pollutants across the state are expected to range from the 'Unhealthy For Sensitive Groups' category in the southwest part of the state to the 'Unhealthy' category in the rest of the state. Hourly concentrations at times may reach the 'Very Unhealthy' to 'Hazardous' categories.

It is recommended, when possible, to avoid strenuous outdoor activities, especially those with heart disease and respiratory conditions like asthma. Watch for symptoms including wheezing, coughing, chest tightness, dizziness, or burning in the nose, throat, and eyes.

For additional information, please visit the Ohio Environmental Protection Agency's website at epa.ohio.gov.

Source: NWS Wilmington OH

Air Quality Alert (ADVISORY) - expires July 18, 2026 at 12:00 AM EDT

Areas affected: Wayne; Fayette; Union; Franklin

Air Quality Alert issued July 17 at 12:43AM EDT by NWS Wilmington OH

The Indiana Department of Environmental Management has declared an Air Action Day, through midnight EDT tonight.

Fine particulate levels are expected to be in the 'Unhealthy for Sensitive Groups' range. Active children and adults, and people with respiratory disease, such as asthma should limit prolonged outdoor exposure.

For additional actions and information, please visit the IDEM Smog page at: https://www.in.gov/idem/airmonitoring/smogwatch/.

Source: NWS Wilmington OH

Air Quality Alert (ADVISORY) - expires July 18, 2026 at 1:00 AM EDT

Areas affected: Benton

Air Quality Alert issued July 16 at 1:28PM CDT by NWS Chicago IL

The officials at the Indiana Department of Environmental Management have declared an Air Quality Action Day, in effect from midnight tonight to midnight Friday Night.

An Air Quality Action Day for Wildfire Smoke and PM 2.5 has been issued. Fine particulate levels are expected to be in the Unhealthy for Sensitive Groups range. Active children and adults, and people with respiratory disease, such as asthma should limit prolonged outdoor exposure.

Here are some recommended actions that the public can take:

• Walk, bike, carpool or use public transportation.
• Avoid using the drive-through and combine errands into one trip.
• Avoid refueling your vehicle or using gasoline-powered lawn equipment until after 7pm.
• Turn off your engine when idling for more than 30 seconds.
• Conserve energy by turning off lights or setting the air conditioner to 75 degrees or above.

For additional information, please visit the IDEM Smog page at:

http://www.in.gov/idem/airmonitoring/smogwatch/

Source: NWS Chicago IL

Air Quality Alert (ADVISORY) - expires July 18, 2026 at 1:00 AM EDT

Areas affected: Lake; Porter; Newton; Jasper

Air Quality Alert issued July 16 at 1:28PM CDT by NWS Chicago IL

The officials at the Indiana Department of Environmental Management have extended the Air Quality Action Day until midnight Friday Night.

An Air Quality Action Day for Wildfire Smoke and PM 2.5 has been issued. Fine particulate levels are expected to be in the Very Unhealthy (Purple) range today and in the Unhealthy (Red) range on Friday. Active children and adults, and people with respiratory disease, such as asthma should avoid prolonged outdoor exposure.

Here are some recommended actions that the public can take:

• Walk, bike, carpool or use public transportation.
• Avoid using the drive-through and combine errands into one trip.
• Avoid refueling your vehicle or using gasoline-powered lawn equipment until after 7pm.
• Turn off your engine when idling for more than 30 seconds.
• Conserve energy by turning off lights or setting the air conditioner to 75 degrees or above.

For additional information, please visit the IDEM Smog page at:

http://www.in.gov/idem/airmonitoring/smogwatch/

Source: NWS Chicago IL

Air Quality Alert (ADVISORY) - expires July 18, 2026 at 12:00 AM EDT

Areas affected: Elkhart; Lagrange; Steuben; Noble; De Kalb; Starke; Pulaski; Marshall; Fulton; Whitley; Allen; Cass; Miami; Wabash; Huntington; Wells; Adams; Grant; Blackford; Jay; Eastern St. Joseph; Northern Kosciusko; Western St. Joseph; Southern Kosciusko

Air Quality Alert issued July 16 at 11:00AM EDT by NWS Northern Indiana

The officials at the Indiana Department of Environmental Management have declared an Air Quality Action Day, in effect for Thursday and Friday, July 16 and 17.

An Air Quality Action Day for PM 2.5 has been issued. Fine particulate levels are expected to be in the very unhealthy, unhealthy, and unhealthy for Sensitive Groups range.

Here are some recommended actions that the public can take:

• Walk, bike, carpool or use public transportation.
• Avoid using the drive-through and combine errands into one trip.
• Avoid refueling your vehicle or using gasoline-powered lawn equipment until after 7pm.
• Turn off your engine when idling for more than 30 seconds.
• Conserve energy by turning off lights or setting the air conditioner to 75 degrees or above.

For additional information, please visit the IDEM Smog page at:

http://www.in.gov/idem/airmonitoring/smogwatch/

Source: NWS Northern Indiana

Air Quality Alert (ADVISORY) - expires July 18, 2026 at 12:00 AM EDT

Areas affected: White

Air Quality Alert issued July 16 at 11:00AM EDT by NWS Northern Indiana

The officials at the Indiana Department of Environmental Management have declared an Air Quality Action Day, in effect for Friday, July 17.

An Air Quality Action Day for PM 2.5 has been issued. Fine particulate levels are expected to be in the Unhealthy for Sensitive Groups range. Active children and adults, and people with respiratory disease, such as asthma should limit prolonged outdoor exposure.

Here are some recommended actions that the public can take:

• Walk, bike, carpool or use public transportation.
• Avoid using the drive-through and combine errands into one trip.
• Avoid refueling your vehicle or using gasoline-powered lawn equipment until after 7pm.
• Turn off your engine when idling for more than 30 seconds.
• Conserve energy by turning off lights or setting the air conditioner to 75 degrees or above.

For additional information, please visit the IDEM Smog page at:

http://www.in.gov/idem/airmonitoring/smogwatch/

Source: NWS Northern Indiana

Air Quality Alert (ADVISORY) - expires July 18, 2026 at 12:00 AM EDT

Areas affected: Northern La Porte; Southern La Porte

Air Quality Alert issued July 16 at 11:00AM EDT by NWS Northern Indiana

The officials at the Indiana Department of Environmental Management have declared an Air Quality Action Day, in effect for Thursday and Friday, July 16 and 17.

An Air Quality Action Day for PM 2.5 has been issued. Fine particulate levels are expected to be in the very unhealthy to unhealthy range.

Here are some recommended actions that the public can take:

• Walk, bike, carpool or use public transportation.
• Avoid using the drive-through and combine errands into one trip.
• Avoid refueling your vehicle or using gasoline-powered lawn equipment until after 7pm.
• Turn off your engine when idling for more than 30 seconds.
• Conserve energy by turning off lights or setting the air conditioner to 75 degrees or above.

For additional information, please visit the IDEM Smog page at:

http://www.in.gov/idem/airmonitoring/smogwatch/

Source: NWS Northern Indiana

Source

Alert data provided by the National Weather Service (NWS). This page shows active alerts only and is refreshed daily. For real-time updates, visit weather.gov.