Kitchener - Air Quality Health Index

Observed ConditionsFootnote †

  • Past 24 hr
    • Calculated at: 3:00 AM EDT Wednesday 13 August 2025

    2Low Risk




    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    +

    Low Risk
    (1-3)

    Moderate Risk
    (4-6)

    High Risk
    (7-10)

    Very High Risk



    At-Risk Population:

    General Population:

    • Ideal air quality for outdoor activities.

    Forecast Maximums

  • Next 24 hr
  • Health Message
    • Issued at: 5:00 PM EDT Tuesday 12 August 2025

    Tuesday night

    3 - Low Risk

    Wednesday

    3 - Low Risk

    Wednesday night

    4 - Moderate Risk

    Thursday

    4 - Moderate Risk

    Who is at risk?

    People with heart and lung conditions are most affected by air pollution.

    To find out if you are at risk, consult the health guide, or your physician.

    Visit the national AQHI Web site to learn more about the AQHI.

    Did you know...?

    Seniors are at higher risk because of their advanced age, weaker immune systems and increased likelihood of health problems such as heart and lung disease.


    The AQHI is an initiative between Environment Canada, Health Canada and the Province of Ontario.