Photo of downtown Phoenix skyline and moderate air pollution

What is a High Pollution Advisory?

High levels of air pollutants such as ozone and particulate matter pose health risks. Children, active adults and those with respiratory illnesses should restrict outdoor activities.

Pollution Prevention Tips:

  • Reduce driving alone and instead, take transit, carpool, or telework
  • When driving, combine trips and limit idling
  • Refuel after dark
  • Use electric-powered lawn and garden equipment

Travel Reduction Program (TRP) employers:

Implement HPA measures as outlined in the TRP Annual Plan, which may include posting flyers, sharing electronic communications and conducting drawings.

    Ozone HPAs in 2019 (18)

    • April 19, 25, 26 (3)
    • May 14, 15, 30 (3)
    • June 8, 9, 10, 11, 12, 15, 24, 25, 28, 29 (10)
    • July 10, 23 (2)

    PM-10 & PM-2.5 HPAs in 2019

    • January 1 (PM-2.5)
    • April 10 (PM-10)
    • May 16 (PM-10)
    • July 13 (PM-10)
    • July 22 (PM-10 & PM-2.5)
    • July 23 (PM-10)

    PM-10 & PM-2.5 HPAs in 2018

    • December 23, 24, 25, 31, 2018 (PM-2.5)
    • August 7, 8, 15, 20, 21, 22, 2018 (PM-10)
    • July 9, 10, 2018 (PM-10)
    • June 14, 15, 2018 (PM-10)
    • April 12, 2018 (PM-10)
    • January 2, 2018 (PM-2.5)
    • January 1, 2018 (PM-2.5)

    2018 Ozone HPAs (55)

    • September 14 (1)
    • August 1, 3, 6, 7, 8, 9, 10, 11, 15, 16, 17, 19 (12)
    • July 1, 5, 11, 12, 13, 14, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31 (21)
    • June 1, 3, 4, 5, 6, 8, 11, 12, 20, 21, 22, 25, 26, 27 (14)
    • May 8, 9 (2)
    • April 23, 24, 25, 26, 27 (5)

    2017 Ozone HPAs (46)

    • September 5, 6, 12 (3)
    • August 1, 3, 8, 9, 18, 25, 29, 31 (8)
    • July 6, 7, 14, 15, 31 (5)
    • June 2, 14, 15, 16, 17, 18, 19, 20, 21, 23, 30 (11)
    • May 1, 2, 3, 4, 12, 20, 21, 22, 23 (9)
    • April 11, 12, 16, 17, 18, 20, 21, 22, 30 (9)

    Get in Touch

    Commute Solutions

    For TRP implementation assistance

    (602) 262-7433