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DENVER (KDVR) — Gov. Jared Polis and Denver Mayor Michael Hancock are holding news conferences Monday to provide an update on COVID-19 as cases rise in Colorado.

Last week, the CDC issued new guidance that urges masks indoors in places with substantial COVID-19 transmission.

Based on the CDC’s guidance, two-thirds of Colorado’s counties should be under indoor mask mandates, including some counties in the Denver metro area.

As of Sunday, the state’s seven day positivity rate was 5.11%. The positivity rate for Summit County has risen to 12.8% over the last seven days, one of the highest rates in the state.

Here’s a look at positivity rates for every county over the last seven days:

1-week positivity rate:

  • Adams: 6.8%
  • Alamosa: 6.8%
  • Arapahoe: 5%
  • Archuleta: 13.4%
  • Baca: 2.6%
  • Bent: 0%
  • Boulder: 3.9%
  • Broomfield: 5.6%
  • Chaffee: 6.3%
  • Cheyenne: 0.0%
  • Clear Creek: 8.8%
  • Conejos: 9.6%
  • Costilla: 10.3%
  • Crowley: 1.7%
  • Custer: 15.6%
  • Delta: 3.1%
  • Denver: 4.2%
  • Dolores: 11.1%
  • Douglas: 5.4%
  • Eagle: 7.5%
  • Elbert: 8%
  • El Paso: 6.3%
  • Fremont: 2.6%
  • Garfield: 5%
  • Gilpin: 5.7%
  • Grand: 6.3%
  • Gunnison: 5.1%
  • Hinsdale: Fewer than 10 tests in the past week
  • Huerfano: 3.3%
  • Jackson: Fewer than 10 tests in the past week
  • Jefferson: 5.4%
  • Kiowa: 0.0%
  • Kit Carson: 4.8%
  • Lake: 4.3%
  • La Plata: 5%
  • Larimer: 5.2%
  • Las Animas: 2.2%
  • Lincoln: 5.3%
  • Logan: 0.0%
  • Mesa: 3.3%
  • Mineral: Fewer than 10 tests in the past week
  • Moffat: 12.5%
  • Montezuma: 3.5%
  • Montrose: 4.4%
  • Morgan: 1.1%
  • Otero: 2.1%
  • Ouray: 4.8%
  • Park: 6.4%
  • Phillips: 5.9%
  • Pitkin: 6.2%
  • Prowers: 5.9%
  • Pueblo: 2.6%
  • Rio Blanco: 11.5%
  • Rio Grande: 2.7%
  • Routt: 4.1%
  • Saguache: 5.3%
  • San Juan: 0.0%
  • San Miguel: 5.6%
  • Sedgwick: 3.4%
  • Summit: 12.8%
  • Teller: 7.8%
  • Washington: 0.0%
  • Weld: 7.1%
  • Yuma: 5.3%

According to the Colorado Department of Public Health and Environment, the incidence rates are also rising over the last seven days.