Improve

Interagency Monitoring of Protected Visual Environments

  • Home
  • Overview
    • IMPROVE Program
    • IMPROVE Charter
    • Visibility Basics
    • Visibility Legislation
    • Outreach Material
    • Glossary
  • Data
    • IMPROVE Data
    • Data Acknowledgment
    • Data Advisories
    • Optical Data
    • Photos
    • Quality Assurance
  • RHR
    • RHR Summary Data
    • Impairment Overview
    • Data Patching
    • RHR Guidance Documents
  • Data Resources
    • Reconstructed Fine Mass
    • The IMPROVE Algorithm
    • Haze Metrics Converter
    • WinHaze
    • Near Real-Time PM2.5 Estimates
  • Publications
    • Intro to Visibility
    • IMPROVE Reports
    • Gray Literature
    • Standard Operating Procedures
    • IMPROVE Calendars
    • Principal Visibility Documents
    • Newsletters (discontinued)
  • Meetings
    • Steering Committee Meetings
    • Other Meetings
  • Special Studies

IMPROVE Data

For full data access, please visit the Federal Land Manager Environmental Database.

Before using any IMPROVE data, be sure to check for Data Advisories that may affect your data set. 

Current Site List Spreadsheet (Updated September 2022)

All Sites (Active and Decommissioned) Spreadsheet (Updated September 2022)

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