Skip Navigation

Palliser Airshed Society

Welcome to the Palliser Airshed

The Palliser Airshed Society (PAS) was established in the Spring of 2003 to monitor ambient air quality in the Medicine Hat / Redcliff region and has expanded to cover the southeastern portion of the province. PAS currently maintains two continuous monitoring sites as well as 22 passive sampling sites distributed throughout the airshed.

Of the two continuous monitoring sites, the Crescent Heights (Medicine Hat) station provides real time data for NO2, SO2, O3, CO, THC, PM2.5 and Meteorological Data. In addition, the site serviced by the portable airpointer currently located adjacent to the municipal airport (referred to as Medicine Hat Airport) provides real time data for NO2/NOX, SO2, and PM2.5

Monthly data available from the passive sites includes NOX, SO2 and O3 levels up to March 31, 2017. On advice from the Environmental Monitoring and Science Division - Alberta Environment and Parks, determination of O3 (ozone) by passive sampling will be discontinued beginning April 1st, as ozone levels remain ultra low and current passive monitoring methods cannot discern a relevant baseline.

Air Quality Health Index (AQHI)

The Air Quality Health Index is a scale designed to help you understand what the air quality around you means to human health. It is designed to help you make decisions to protect your health as well as the health of those dependant on you. AQHI values indicate specific recommendation to limit short-term exposure to air pollution and adjust outdoor activities during periods of increased levels of air pollution. For more information, please visit:

Current Minute Data are Now Available Using Microsoft® SilverLight™.

SilverLight™ requires Internet Explorer®

Historical hourly data are available through the Alberta Air Data Warehouse at

Data for the Portable Jenner station are available for October 1, 2009 to February 28, 2010.

Data for the Portable Hays station are available for May 18 to September 30, 2011.

INFO!   Monthly Air Quality Data Summaries, condensed versions of monthly air quality data, are also available for download.

2017 Annual General Meeting

The 2017 Annual General Meeting of the Palliser Airshed Society is scheduled for: Wednesday May 31 from 09:00 am to 12:00 noon, Crowfoot Room (F-160), Medicine Hat College Campus (299 - College Drive SE)

Please RSVP to Ken Perl prior to May 29th, and feel free to forward this invitation to a colleague or associate who may share an interest in the ambient air quality of southeastern Alberta.

For more information, download the AGM invitation. A detailed agenda and schedule of content as well as additional information related to the special guest presentations are also available on request. Now Available: A PDF download of the Final 2016 Annual Report is available (14.0 MB).


The Palliser Airshed Society would like to thank the Environmental Monitoring and Science Division of Alberta Environment and Parks (EMSD-AEP) for providing funding in support of monitoring operations for 2016. In addition, contributions from municipalities as well as industry partners with facilities located within the airshed derived from membership fees also provide vital support. The combined resources from public and private sectors allow PAS to continue to operate a comprehensive monitoring network which provides access to reliable air quality data for the benefit of all residents of the southeastern region of Alberta.

A complete listing of those who contributed financial support to the Palliser Airshed Society in 2016 can be found at Supporting Members.

Palliser Health Region Map

Contact Us

Ken Perl, Executive Director
Palliser Airshed Society
Suite 208
3271 Dunmore Road SE, Unit 3
Medicine Hat, AB. T1B 3R2
PH 403 892 7745

The current Air Quality Health Index (AQHI) in Medicine Hat (Airport) is:
Consider reducing or rescheduling strenuous activites outdoors if you are experiencing symptoms.
Current Conditions
Temp:12.31 °C
Wind:26.5 kph
Direction (from):N
WD Chart


Palliser Airshed Society