AQHI Forecast:

Forecast Issued on:
March 23, 2023

AQHI Forecast for Friday by Stations.
Station Location AQHI AQHI Category
Barrie83 Perry St.3Low Risk, BarrieLow Risk
Belleville2 Sidney St., Water Treatment Plant3Low Risk, BellevilleLow Risk
Brampton109 Mclaughlin Rd. S.3Low Risk, BramptonLow Risk
Brantford324 Grand River Ave.3Low Risk, BrantfordLow Risk
BurlingtonNorth Shore Blvd. E. Lakeshore Rd.3Low Risk, BurlingtonLow Risk
Chatham435 Grand Ave. W.3Low Risk, ChathamLow Risk
CornwallBedford St. 3rd St. W.3Low Risk, CornwallLow Risk
Dorset1026 Bellwood Acres Rd.2Low Risk, DorsetLow Risk
Grand BendPoint Blake Conservation Area3Low Risk, Grand BendLow Risk
GuelphExhibition St. Clark St. W.3Low Risk, GuelphLow Risk
Hamilton DowntownElgin St. Kelly St.3Low Risk, Hamilton DowntownLow Risk
Hamilton Mountain250 Fennell Ave. W.3Low Risk, Hamilton MountainLow Risk
Hamilton WestMain St. W. Hwy 4033Low Risk, Hamilton WestLow Risk
Kingston23 Beechgrove Lane3Low Risk, KingstonLow Risk
KitchenerWest Ave. Homewood Ave.3Low Risk, KitchenerLow Risk
London42 St. Julien St.3Low Risk, LondonLow Risk
Milton1120 Main St. E.3Low Risk, MiltonLow Risk
Mississauga3359 Mississauga Rd. N., U of T Campus3Low Risk, MississaugaLow Risk
NewmarketEagle St. W. McCaffrey Rd.3Low Risk, NewmarketLow Risk
North BayChippewa St. W., Dept. National Defence2Low Risk, North BayLow Risk
OakvilleEighth Line, Glenashton Dr., Halton Res.3Low Risk, OakvilleLow Risk
OshawaBrittania Ave. W., Ep Taylor Stables3Low Risk, OshawaLow Risk
Ottawa DowntownRideau St. Wurtemburg St.3Low Risk, Ottawa DowntownLow Risk
Parry Sound7 Bay St.2Low Risk, Parry SoundLow Risk
Peterborough10 Hospital Dr.3Low Risk, PeterboroughLow Risk
Port Stanley43665 Dexter Line, Elgin Water T. Plt3Low Risk, Port StanleyLow Risk
Sarnia700 Christina St. N.3Low Risk, SarniaLow Risk
Sault Ste. MarieSault College2Low Risk, Sault Ste. MarieLow Risk
St. CatharinesArgyle Cres., Pump Stn.2Low Risk, St. CatharinesLow Risk
Sudbury155 Elm St.2Low Risk, SudburyLow Risk
Thunder Bay421 James St. S.3Low Risk, Thunder BayLow Risk
Tiverton4th Concession, Bruce Rd. 233Low Risk, TivertonLow Risk
Toronto Downtown55 John St.3Low Risk, Toronto DowntownLow Risk
Toronto EastKennedy Rd. Lawrence Ave. E.3Low Risk, Toronto EastLow Risk
Toronto North4905 Dufferin St., Eccc3Low Risk, Toronto NorthLow Risk
Toronto West125 Resources Rd.3Low Risk, Toronto WestLow Risk
Windsor Downtown467 University Ave. W.3Low Risk, Windsor DowntownLow Risk
Windsor WestCollege Ave. South St.3Low Risk, Windsor WestLow Risk

Forecast: Ontario's Air Quality Health Index

  • Environment Canada location AQHI forecasts updated at 6:00 am EDT March 23, 2023.

Air Quality Health Index (AQHI) Categories

Air Quality Health Index Categories, Values and Associated Colours
Air Quality Health Index Categories and Values
Low Risk
(1 - 3)
Moderate Risk
(4 - 6)
High Risk
(7 - 10)
Very High Risk
  • The Air Quality Health Index on this web page are based on automatically polled data and have not undergone final verification.
  • N/A (Not Available) denotes invalid or missing data.

Air Quality Health Index Categories and Health Messages

The table below provides the health messages for each category of the Air Quality Health Index for the "at risk" population and the general population.
Health Risk Air Quality Health Index Health Messages
At Risk Population* General Population
Low 1 - 3 Enjoy your usual outdoor activities. Ideal air quality for outdoor activities.
Moderate 4 - 6 Consider reducing or rescheduling strenuous activities outdoors if you are experiencing symptoms. No need to modify your usual outdoor activities unless you experience symptoms such as coughing and throat irritation.
High 7 - 10 Reduce or reschedule strenuous activities outdoors. Children and the elderly should also take it easy. Consider reducing or rescheduling strenuous activities outdoors if you experience symptoms such as coughing and throat irritation.
Very High Above 10 Avoid strenuous activities outdoors. Children and the elderly should also avoid outdoor physical exertion. Reduce or reschedule strenuous activities outdoors, especially if you experience symptoms such as coughing and throat irritation.

* People with heart or breathing problems are at greater risk. Follow your doctor's usual advice about exercising and managing your condition.

Environment and Climate Change Canada website for AQHI readings and forecasts:

You can also get AQHI readings from recorded telephone messages by dialing 1-800-387-7768 (toll-free) or 416-246-0411 in Toronto.