Explore Air

Ozone Trend Plots


2007 Example Ozone Plot
The Air Resources Division reports the ozone and meteorological data annually for the Gaseous Pollutant Monitoring Network and parks with state operated ozone monitoring.

Determination of trends is an important objective in the monitoring strategy. Trends summary and discussion can be found in the annual GPRA report and the Annual Data Summary Report.

This webpage provides access to ozone trend plots for specific parks using data from 1988 through 2008. Use the list(s) below to view park data for these plots.


Begin by selecting the Plot type.
Select Plot Type:


To report problems, contact John Ray, Monitoring Network Coordinator (303.969.2820) or the Webmaster.

updated on 11/12/2008  I   http://nature.nps.gov/air/monitoring/O3Plots/index.cfm   I  Email: Webmaster