Visitor Information

Weekly public tours are offered every Tuesday at 1pm Mountain Time.


Divisions of the NOAA Earth System Research Laboratory (ESRL) are located in the David Skaggs Research Center (DSRC) at 325 Broadway, in Boulder, Colorado, south of the Department of Commerce National Institute of Science and Technology (NIST).

Driving Directions from Denver International Airport (DIA)

Toll Free:

  • Exit Denver International Airport via Peña Boulevard.
  • Take Peña Boulevard to I-70 West.
  • Split right on I-270 North (Exit 279), toward Ft. Collins and follow across I-25 to US-36 (West) toward Boulder.
  • Exit US-36 at Baseline Road (University of Colorado Main Campus exit).
  • Keep left and turn left (West) onto Baseline.
  • Keep left and turn left at the first light onto 27th Way.
  • Stay in the middle lane and turn left onto Broadway.
  • Take the second right at the light onto Rayleigh Road and bear right into the Visitors Center parking lot.

Toll Road:

  • Exit Peña Boulevard at E-470 and follow onto the Northwest Parkway to US-36. The toll authority EXpressToll manages payments online, by phone, or by mail.

By Bus

Regional bus service to Boulder is available through the Regional Transportation District (RTD). The AB bus provides service between Boulder and the Denver International Airport. The FF buses provide regional service between Denver and Boulder from the Broadway & Baseline and Broadway & Dartmouth stops. Broadway & Rayleigh Road is the closest stop to the Visitors Center and is served by the Skip and Dash bus routes. The Flatiron Park-n-Ride (Broadway & 27th Way) is nearby and additionally served by the Bound route.

Security Procedure for Visitors

  • The Visitors Center and entrance to the Boulder Department of Commerce facilities are located on Broadway at Rayleigh Road. All visitors, including pedestrians and bike riders, are required to check in at the Visitors Center at the Security Checkpoint to receive a visitor badge, before proceeding to their destination.
  • To receive a visitor badge, visitors must present a valid photo ID. More info... Forms of identification acceptable for entry to NOAA facilities based on citizenship Foreign nationals without permanent residency must contact us at least 48 hours in advance to provide additional information required for security purposes. More Info... Foreign Nationals. Requirements are per Homeland Security regardless of security threat level.

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