The Mariners will be the home team for all three games.
The West Coast wildfires have caused air-quality woes in the Seattle area this week.
A two-game Giants-Mariners series scheduled for earlier this week in Seattle was postponed and moved to San Francisco, with the teams finishing it Thursday. That decision came after some players complained about smoky conditions Monday after the Mariners split a doubleheader with the Oakland Athletics.
According to Airnow.Gov, the air quality rating for Friday in Seattle is expected to be 149, which is deemed “unhealthy for sensitive groups.” The air quality is projected to be much better Saturday and Sunday.
ESPN’s Jeff Passan reported earlier this week that if then West Coast fires continue to affect Major League Baseball down the stretch, particularly with the ALDS and ALCS scheduled in California, the Phoenix area has emerged as the primary backup option if the league needs to move any postseason games on account of air-quality problems.