For the second consecutive day, concerns over air quality have led local officials to cancel outdoor activities and events, and close playing fields.

The Town of Newtown issued the alert early Thursday afternoon. The closures are in effect for the remainder of the day.

According to the notice, “In response to our current air quality, many organizations that serve our community, with a particular focus on our most vulnerable — children, elderly and those who may be more susceptible due to their health status — a decision has been made to limit outdoor exposure especially involving increased exertion (running, biking, play).

“It certainly is voluntary on an individual basis, but with an abundance of caution, activities that involve bringing groups together without knowing individual risk are being canceled or postponed,” the statement continued.

All outdoor sports, Eichler's Cove Beach, Treadwell pool, and Parks & Recreation activities are canceled/closed this afternoon, according to the notice.

CT DEEP’s Air Quality Index went from Moderate-Unhealthy for Sensitive Groups on Tuesday to Unhealthy as of Wednesday. It remains Unhealthy as of 1 pm today.

CT DEEP's Air Quality Index link can be found here: portal.ct.gov/DEEP/Air/Forecasting/AQI/Air-Quality-Index

Smoke from Canada’s wildfires has been moving into the United States since last month. The most recent fires near Quebec have been burning for at least several days. The Quebec-area fires are big and relatively close, about 500 to 600 miles (roughly 800 to 970 kilometers) away from Rhode Island.

Smoke from the fires has wafted through northeast US states for weeks, but it’s only recently been noticeable in most places. The US Environmental Protection Agency said hazy skies, reduced visibility and the odor of burning wood are likely, and that the smoke will linger for a few days in northern states.

Local officials issued a similar cancellations announcement yesterday, marking the first time weeks of wildfires have had a direct effect locally.