Hamilton West - Air Quality Health Index

Observed ConditionsFootnote †

  • Past 24 hr
  • AQHI by Station
    • Calculated at: 5:00 AM EDT Friday 25 July 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: 6:00 AM EDT Friday 25 July 2025

    Friday

    3 - Low Risk

    Friday night

    3 - Low Risk

    Saturday

    3 - Low Risk

    Saturday night

    3 - Low 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...?

    After a labour dispute shut down an American steel mill, respiratory hospital admissions in children substantially decreased. They increased to pre-strike levels when it ended.


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