The 23-year-old had room to spare as she sailed over the bar at the first attempt and went close as she tried for a world record of 2.10.
World champion Kasja Bergvist of Sweden and Spain's Ruth Beitia tied for second place with clearances of 1.95.
There was another top class performance in the women's long jump with Russian Olympic champion Tatyana Lebedeva celebrating her 31st birthday with a leap of 7.15 metres, the second best mark in the world this year.
Portugal's Naide Gomes also broke the seven metre barrier to finish second with a personal best mark of 7.01.
The evergreen Maria Mutola of Mozambique was one of three women to dip under two minutes as she breezed to victory in the 800 metres.
The 34-year-old three times world champion turned on the power down the home straight to ease past Moroccan world and Olympic silver medallist Hasna Benhassi and post a time of 1:58.80.
The stand-out performances in the men's events came from Portugal's Nelson Evora in the men's triple jump and Youssef Saad Kamel of Bahrain in the 800 metres.
The 23-year-old Evora set a national record and the fifth best mark in the world this year with his final leap of 17.51 metres.
Kenyan-born Saad Kamel also looked in good shape when he eased to victory in the 800m with a season's best time of one minute 44.49.
Dutchman Rutger Smith won a high-profile shot put featuring the top-five ranked men this season.
Smith launched the put to a season's best 21.12 metres with his first effort to claim an emphatic victory over Reese Hoffa of the United States (20.81) and Dane Joachim Olsen (20.64).
Lithuania's Virgilijus Alekna deprived the home crowd of something to celebrate when he overhauled local favourite Mario Pestano to win the men's discus with a throw of 68.74 metres.
Kenya's Julius Nyamu ended the night on a high when he set a meeting record of eight minutes 23.81 as he cruised to victory in the men's 3000 metre steeplechase.
Leading results:
MEN’S:
100 metres: 1 equal. Francis Obikwelu (Portugal) 10.39 seconds, 1 equal. Josh Ross (Australia) 10.39; 3. Wallace Spearmon (US) 10.40.
400 metres: 1. John Steffensen (Australia) 45.05 seconds; 2. Angelo Taylor (US) 45.05; 3. Michael Blackwood (Jamaica) 45.60.
800 metres: 1. Youssef Saad Kamel (Bahrain) one minute 44.49 seconds; 2. Khadevis Robinson (US) 1:45.03; 3. Nick Symmonds (US) 1:45.06.
1500 metres: 1. Ivan Heshko (Ukraine) three minutes 37.57 seconds; 2. Daham Najim Bashir (Qatar) 3:37.79; 3. Badr Rassioui (Morocco) 3:37.90.
110-metre hurdles: 1. Ron Bramlett (US)
13.44 seconds; 2. David Oliver (US) 13.45; 3. Aries Merritt (US) 13.45.
3000-metre steeplechase: 1. Julius Nyamu (Kenya) eight minutes 23.81 seconds; 2. Steve Slattery (US) 8:24.29; 3. Collins Kosgei (Kenya) 8:26.18.
Triple jump: 1. Nelson Evora (Portugal) 17.51 metres; 2. Randy Lewis (Grenada) 17.40; 3. Aarik Wilson (US) 17.30.
Shot put: 1. Rutger Smith (Netherlands) 21.12 metres; 2. Reese Hoffa (US) 20.81; 3. Joachim Olsen (Denmark) 20.64.
Discus throw: 1. Virgilijus Alekna (Lithuania) 68.74 metres; 2. Mario Pestano (Spain) 66.33; 3. Rutger Smith (Netherlands) 63.28.
200 metres (race 1): 1. Rachelle Smith (US) 23.12 seconds; 2. Lauryn Williams (US) 23.14; 3. Anyika Onuora (Britain) 23.77.
200 metres (race 2): 1. Marshevet Hooker (US) 23.25 seconds; 2. Joice Maduaka (Britain) 23.31; 3. Nora Ivanova-Edletzbeger (Turkey) 24.19.
800 metres: 1. Maria Mutola
(Mozambique) one minute 58.80 seconds; 2. Hasna Benhassi (Morocco) 1:59.47; 3. Tamsyn Lewis (Australia) 1:59.80.
1500 metres: 1. Olesya Chumakova (Russia) four minutes 06.89 seconds; 2. Ibtissam Lakhouad (Morocco) 4:06.98; 3. Siham Hilali (Morocco) 4:07.37.
400-metre hurdles: 1. Anna Jesien (Poland) 54.85 seconds; 2. Angela Morosanu (Romania) 54.91; 3. Sandra Glover (US) 55.62.
High jump: 1. Blanka Vlasic (Croatia) 2.05 metres; 2 equal. Ruth Beitia (Spain) 1.95, 2 equal. Kajsa Bergqvist (Sweden) 1.95.
Long jump: 1. Tatyana Lebedeva (Russia) 7.15 metres; 2. Naide Gomes (Portugal) 7.01; 3. Oksana Udmurtova (Russia) 6.85.
Pole vault: 1. Kym Howe (Australia) 4.62 metres; 2. Svetlana Feofanova (Russia) 4.62; 3 equal. Chelsea Johnson (US) 4.57, 3 equal. Tatyana Polnova (Russia) 4.57.
Javelin throw: 1. Nikola Brejchova (Czech Republic) 61.92 metres; 2. Mercedes Chilla (Spain) 60.12; 3. Felicia Moldovan (Romania) 59.66.—Reuters