The event runs from Sept. 1-10 at the Hawaii Convention Center and Neal S. Blaisdell Center.
With many high profile guests in attendance, security will be tight and several road closures will be in effect over the course of the week.
"If you're driving, avoid Kapiolani, avoid Ward, avoid King Street if you can both Wednesday and Thursday," said Honolulu Mayor Kirk Caldwell.
City officials say crews will begin putting up barricades at 10 p.m. Tuesday. All ewa-bound lanes of Kapiolani Boulevard between Kamakee Street and Ward Aveue will remain closed until Friday.
In addition, some sidewalks there will be closed to pedestrians.
And on Thursday, parking around Ala Moana Beach Park will be limited.
"We are really excited to be hosting this World Conservation Conference in Honolulu," Caldwell said. "The island of Oahu will be impacted by climate change and sea level rise in the coming decades, and having world experts on conservation here with our Oahu born and raised President Barack Obama is a once in a lifetime opportunity for our community. Mahalo to drivers for their patience during the conference."
Full list of interruptions and closures:
- Tuesday and Wednesday, from 10 p.m. to 5 a.m.
Two ewa-bound lanes of Kapiolani Boulevard between Kamakee Street and Ward Avenue will be closed so crews can install traffic control devices. Also, all mauka-bound lanes of Ward Avenue between Kapiolani Boulevard and King Street will be closed.
Wednesday at 9 a.m.
Barricades will be installed along Ward Avenue and King Street. Sidewalks along King Street and Ward Avenue fronting the Blaisdell will be closed.
- Thursday, from 2:30 a.m. to 2 p.m.
The following road changes will be in effect:
Around the Neal S. Blaisdell Center:
- All mauka-bound lanes of Ward Avenue will be closed between Kapiolani Boulevard and King Street.
- Victoria Street will be closed between Beretania Street and King Street.
- The makai-bound lane of Victoria Street must turn right onto Beretania Street.
- Local traffic only will be allowed on Young Street, between Victoria Street and Pensacola Street.
- The makai curb lane of King Street will be closed between Ward Avenue and McKinley High School driveway.
Hawaii Convention Center Area:
- The Atkinson Drive mauka-bound curb lane will be closed between Mahukona Street and Kapiolani Boulevard.
- On Kapiolani Boulevard, the Koko-head bound curb lane between Atkinson Drive and Kalakaua Avenue will be closed.
- On Kalakaua Avenue, the makai-bound curb lane between Kapiolani Boulevard and Ala Wai Canal Bridge will be closed.
Additionally, there will be no morning contraflow on Ward Avenue or Kapiolani Boulevard.
- Thursday and Friday, from 7 p.m. to 5 a.m.
During this period, traffic control devices will be removed along Kapiolani Boulevard and Ward Avenue, and pedestrian walkways will be re-opened.
- Tuesday at 10 p.m. to Friday at 3:30 p.m.
Three bus stops will be temporarily taken out of service. For a full list of affected bus stops, click here.
Parks and parking lot changes
The entire parking lot at Magic Island will be closed to the public.
- Thursday through Sept. 10
The following city parks and parking areas will be closed to the public:
- McCoy Pavilion and the “keyhole” parking area to include the tennis courts and the Honolulu Lawn Bowls Green.
- Ala Wai Community Park building and parking lot.
- The Ala Wai Promenade as well as the Ala Wai Canal between Kalakaua Avenue and Ala Moana Boulevard will be closed to pedestrian traffic as well as marine activity.