Current Air Quality Data - Western Mtns Region
Below are the hourly air quality concentrations for theWestern Mtns Region of Maine for Jul 25, 2014.
Data is reported based on the Air Quality Index.
Special status notes:
Smoke from fires in the Northwest Territories of Canada is over New England. At this point it appears that much of this layer of smoke is aloft and not causing much of an impact at the surface. however, there seem to be sporadic brief smoke intrusions to the surface. So if the air appears hazy it would be a good idea to reduce the level of your exertion. We will keep an eye on the situation and update/revise the forecast as needed.
Region Summary - Jul 25, 2014
This chart displays the region's final AQI for each day of the last 7 regardless of which pollutant produced that value.
Hourly Air Concentrations - Jul 25, 2014
[Text explaining what these graphs are]. Ozone charts chart display a running 8-hour average AQI for each hour up to the last hour posted. Particle Pollution charts use a 24-hour running average.
The hourly pollutant values, shown in the graphs, are based on the national Air Quality Index (AQI). The AQI is computed from data collected by a network of air monitoring sites. The AQI converts the pollutant concentrations to a value easily compared to the health standard of each pollutant.
8-hour Ozone and 24-hour Particle Pollution concentrations with an AQI over 100 have exceeded the health standard.
The Regional Summary graph is a visual display of the final AQI value for each day of the last seven days. The final AQI value for a given day is the highest AQI reached by any monitor in that region regardless of which pollutant was involved.
Site-specific graphs display the AQI associated with the current running average. When viewed late in the day one can see how the pollution levels changed over the course of that day.
The color-coding is based on the AQI. Green indicates values in the "good" range; yellow in the "moderate" range; orange in the "unhealthy for sensitive groups" range; red in the "unhealthy" range, and purple in the "very unhealthy" range. An X indicates suspect data.