The Air Quality Index
 
 
The Air Quality Index (AQI) is an indicator of how harmful the air quality in your region is to your health and the environment. This number is determined by the Ontario Ministry of the Environment (MOE) who gathers real-time air quality data from their air monitors across the province. The MOE then takes all the air quality data into consideration and determining what the overall health and environmental effect is at each air monitoring station. They then report these numbers to the public and media at an hourly basis to inform the public if special precautionary measures need to be taken.
  
These air quality monitors measures air pollutants such as ozone, fine particulate matter, nitrogen dioxide, carbon monoxide, sulphur dioxide, and total reduced sulphur compounds. There are three monitoring stations in Hamilton: in Hamilton Downtown, Mountain, and Hamilton West. To find out what today's Air Quality Index is in your area, or for more information, consult the Ontario Ministry of the Environment's Air Quality site at: http://www.airqualityontario.com.
  
What do the MOE's Air Quality Index readings in means in terms of health impacts?
 
  • If the air quality value is below 32, the air quality is considered good.


  • If the AQI value is in the range of 32 to 49 (moderate category), there may be some adverse effects in sensitive individuals.


  • An index value in the 50 to 99 range (poor category) may result in some short-term adverse effects on humans, particularly sensitive individuals, and on animals; these conditions may also cause some damage to vegetation and property.


  • An AQI value of 100 or more (very poor category) may cause adverse effects on a large fraction of the exposed human and animal populations. There will also be increased damage to plants, crops and property.


What's new:

In the News

Projects

Reports

Meetings

Events

About us:

Who we are

Members

Minutes

In the Community

Awards

Join us

Air Quality:

Sources

Air Quality Trends

Smog Days

Air Quality
Index (AQI)


Air Monitoring

Mobile Monitoring

Stack Watch

Dust Abatement

Odours

Wood Burning

Health:

Health Impacts

Nitrogen Oxide

Sulphur Dioxide

Particulates

Ozone

Protect your Health

Air Quality Health
Index (AQHI)

Upwind Downwind Conference:

News

Agenda

Presentations 2016

Presentations 2014

Presentations 2012

Sponsors

Register

Past Conferences

Cars and Trucks:

Idling

Commuter
Challenge


Walking & Cycling

Transit

Hybrid Cars

Electric Cars

Local Actions:

Tree Planting

Energy

Climate Change

Reports and Resources:

Annual Reports

Research

Presentations

Factsheets

Teachers

Resource Links

Contact Us