The first Red Sox-Yankees meeting of the season is scheduled to take place in the Bronx this weekend, but the ongoing air pollution from more than 400 wildfires in Canada could impact the series.

Toxic smoke particles have traveled down to the Midwest and East coast, turning New York skies an eerie yellow-orange color and making the air unsafe. According to the Centers For Disease Control, wildfire smoke can cause short-term respiratory problems, worsen chronic ailments, and irritate eyes.

As concerning photos of the conditions at Yankee Stadium circulated online Wednesday afternoon, Collin Grosse of News12 New Jersey reported that the AQI had risen to 342 (the ideal number is as close to zero as possible), which not only puts New York City in the “Hazardous” category, but also makes it currently the worst air quality of any major city on earth.

Less than two hours later, the Yankees announced the postponement of their Wednesday night game against the Chicago White Sox. They’ll now attempt to play a doubleheader on Thursday, before the Red Sox are scheduled to arrive. The Philadelphia Phillies also postponed their Wednesday contest with the Detroit Tigers.

However, New York’s Air Quality Alert is currently in effect until 5 p.m. on Thursday, June 8, and there’s little chance of conditions improving so drastically over the next 24 hours.

Sources tell the Herald that the Red Sox are in communication with the Yankees and league office regarding the situation. As of Wednesday evening, there had been no discussion of moving the series to Fenway Park.

Shipping up to Boston is currently the safer route. Massachusetts is affected by the wildfires, too, but not as severely. By 8 p.m. Wednesday night, the AQI in the Fenway area had improved to the 40s, putting it back in the satisfactory range, while New York’s had only sunk as low as 275.