July 12, 2008 - 24-Hour Graph of PM2.5 - Chico, Gridley, Paradise and Magalia for July 11, 2008. Please note that data above 400 micrograms per cubic meter (ug/m3) may not be accurate due to equipment limitations.

July 11, 2008 - Real Time Air Monitoring Data on the California Air Resources Board Website - For Today's Air Quality http://www.arb.ca.gov/aqd/aqinfo.htm.

At this website you can chose the Real Time Query Tool to get fine particulate matter (PM2.5). Step 1: Select PM2.5(BAM); Step 2: Select the date and time (it defaults to current date and select whole day): Step 3 Select the county, air basin or part of the state you want air monitoring data (i.e. Butte or North part or all of the State); Step 4 Select Hourly Data; Step 5 Select Basin/County/Site (this is the default). Then Select Retrieve Data. The data will be presented hourly showing the maximum for the day and the average of the hours collected. There may be missing data gaps. This is due to the program flagging data which may not be accurate.

Air Quality Index (AQI) information which is reported in the District's Air Quality Advisory Updates is based on an average of 24-hours of monitoring data. If less data is available the health category can be estimated using the following guide: For 1 - 3 hour averages of PM2.5 micrograms per cubic meter (ug/m3) the health categories are: Good 0-40; Moderate 41-80; Unhealthy for Sensitive Groups 81-175; Unhealthy 176-300; Very Unhealthy 301-500; Hazardous >500. For more information on AQI go to http://www.airnow.gov/.

July 11, 2008 - Air Quality Advisory Update

July 10, 2008 - Air Quality Advisory Update

July 9, 2008 - Joint Air Quality and Public Health Officer Media Advisory - Health recommendations to reduce the impact from wildfire smoke

July 9, 2008 - Air Quality Advisory Update

July 8, 2008 - Air Quality Advisory Update

July 7, 2008 - Air Quality Advisory Update

July 6, 2008 - Air Quality Advisory Update

July 5, 2008 - Air Quality Advisory Update

July 4, 2008 - Air Quality Advisory Update

July 3, 2008 - Air Quality Advisory Update

July 2, 2008 - Air Quality Advisory Update

July 1, 2008 - Air Quality Advisory Update