Air Trends
1998 Air Trends Report - Frequently Requested Tables
Note: EPA no longer updates this information, but it may be useful as a reference or resource.
Please see www.epa.gov/airtrends for the latest information on Air Quality Trends.
You will need Adobe Acrobat Reader to view the Adobe PDF files on this page. See EPA's PDF page for more information about getting and using the free Acrobat Reader.
| Download all tables: Appendix A (PDF 513K) | |
| Download individual tables for use in spreadsheets: | |
| Table A-1. | National Air Quality Trends Statistics for Criteria Pollutants, 1989-1998 |
| Table A-2. | National Carbon Monoxide Emissions Estimates, 1989-1998 (thousand short tons) |
| Table A-3. | National Lead Emissions Estimates, 1989-1998 (short tons) 121 |
| Table A-4. | National Nitrogen Oxides Emissions Estimates, 1989-1998 (thousand short tons) |
| Table A-5. | National Volatile Organic Compounds Emissions Estimates, 1989-1998 (thousand short tons) |
| Table A-6. | National PM10 Emissions Estimates, 1989-1998 (thousand short tons) |
| Table A-7. | Miscellaneous and Natural Particulate Matter Emissions Estimates, 1989-1998 (thousand short tons) |
| Table A-8. | National Sulfur Dioxide Emissions Estimates, 1989-1998 (thousand short tons) |
| Table A-9. | National Long-Term Air Quality Trends, 1979-1998 |
| Table A-10. | National Air Quality Trends by Monitoring Location, 1989-1998 |
| Table A-11. | National Air Quality Trends Statistics by EPA Region, 1989-1998 |
| Table A-12. | Maximum Air Quality Concentrations by County, 1998 |
| Table A-13. | Maximum Air Quality Concentrations by Metropolitan Statistical Area, 1998 |
| Table A-14. | Metropolitan Statistical Area Air Quality Trends, 1989-1998 |
| Table A-15. | Number of Days with AQI Values Greater Than 100 at Trend Sites, 1989-1998, and All Sites in 1998 |
| Table A-16. | (Ozone only) Number of Days with AQI Values Greater Than 100 at Trend Sites, 1989-1998, and All Sites in 1998 |
| Table A-17. | Condensed Nonattainment Areas List(a) |
| Table A-18. | Trend in 8-hr ozone concentrations at National Park and National Monument sites, 1989-98 |
