Jump to main content or area navigation.

Contact Us

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

Related Links | Acronyms | Hardcopies

Jump to main content.