New Hampshire's air quality will be unhealthy for sensitive groups on Tuesday, marking the third day in a row with unhealthy air caused by smoke from wildfires in Western Canada.

The levels of fine particulate matter from the smoke can travel deep into a person’s lungs.

“People with preexisting conditions, such as asthma or other existing lung diseases, may not be able to breathe as deeply or as vigorously as normal,” said Kathleen Simmons, the state's senior air quality scientist.

For sensitive groups, like children, older adults, people with lung disease, or people outdoors, officials recommend reducing prolonged or heavy exertion outside.

Canadian wildfires impacting air quality may seem like a summer routine now. But Simmons says her team has started needing to keep track of fires

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