Please select a site and a date. Charts reflecting the realtime data will appear below the selected criteria. 1. Select a site: 2. Select a date: 3. Submit Your Query: Buffalo, Linwood Mining Clinton, Rainbow Park Clinton, Chancy Park Scott County Park Davenport, 10th and Vine Davenport, Black Hawk Foundry Lake Sugema Harrison County, Pisgah Mason City, 17th and Washington Muscatine, Musser Park Emmetsburg Iowa City-Hoover School Muscatine-Garfield Viking Lake Waverly Waterloo, Water Tower Pisgah

All data points are reported in local time. EPA (AQI) Health Thresholds 145 ppb over a 24 hour period Currently there is no EPA (AQI) Health Threshold EPA (AQI) Health Thresholds 650 ppb over a 24 hour period EPA (AQI) Health Thresholds PM10 = 155 µg/m3 over a 24 hour period PM2.5 = 35.5 µg/m3 over a 24 hour period EPA (AQI) Health Thresholds 125 ppb over a 1 hour period 76 ppb over a 8 hour period Currently there is no EPA (AQI) Health Threshold Currently there is no EPA (AQI) Health Threshold Currently there is no EPA (AQI) Health Threshold

This is raw data. It has not been validated and may contain errors The data is obtained from automated, continuous instruments; no human has reviewed or checked the accuracy of this data. The data has been subject to only preliminary automated quality assurance procedures. Special conditions such as power outages, equipment malfunction, instrument repair and calibration can produce data that is invalid. This data is made available for the purpose of public awareness and should not be used in any medical or other scientific study. Quality assured data is available from the Iowa Department of Natural Resources 1-2 months after the sampling date. PM-10, SO2, NO2, H2S and O3 concentrations are calculated using standard temperature and pressure (25 degrees C and 760 mmHg). PM-2.5 concentrations are calculated using local(actual) temperature and pressure and may include a seasonal adjustment factor. The data from January 1, 2000 through August 31, 2005 has been extracted from the AIRS data base. Special Study Rural H2S and NH3 Monitoring Sites are located at Clarion, Goldfield, Iowa Falls, Stanhope, Newkirk, Sac City, Belmond, Jewell, Kanawha, West Union. PM-2.5 and PM-10 data may have a correction factor. Ozone concentrations are measured on a seasonal basis during the months of April through October. Nitrate Speciation concentrations are measured on a seasonal basis during the months of October through April.