Calgary - Air Quality Health Index

Observed ConditionsFootnote †

  • Past 24 hr
    • Calculated at: 11:00 PM MDT Wednesday 18 March 2026

    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 MDT Wednesday 18 March 2026

    Wednesday night

    4 - Moderate Risk

    Thursday

    4 - Moderate Risk

    Thursday night

    4 - Moderate Risk

    Friday

    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...?

    Large, heavy vehicles like SUVs cause nearly twice as much pollution as small, subcompact cars.


    The AQHI is an initiative of Environment Canada, Health Canada, Alberta Environment and Protected Areas, Alberta Health and Alberta Health Services.