Mohali and Chandigarh are contiguous, separated by the administrative boundary between Punjab and the Union Territory of Chandigarh. The original plan of Mohali was conceived as an extension of Chandigarh’s sector-based urban design, incorporating an approximately 800 m × 1,200 m grid pattern similar to that of Chandigarh. The first eleven sectors of Mohali are commonly referred to as
Phases. Initial development extended up to Phase 7. Expansion beyond Phase 8 began in the late 1980s, and the city’s bus stand was constructed during the development of Phase 8 in the mid-1990s. Several sectors are shared between Chandigarh and Sahibzada Ajit Singh Nagar (Mohali), including Sectors 48, 51, 52, 54, 56, 61, and 63. Sectors numbered 63 and above fall within the jurisdiction of Sahibzada Ajit Singh Nagar. The corresponding phase–sector alignment is as follows: • Phase 1 – Sector 55 • Phase 2 – Sector 56 • Phase 3 – Sector 57 • Phase 4 – Sector 58 • Phase 5 – Sector 59 • Phase 6 – Sector 60 • Phase 7 – Sector 61 • Phase 8 – Sector 62 • Phase 9 – Sector 63 • Phase 10 – Sector 64
Greater Mohali Area Development Authority master plan According to the
GMADA master plan, the city extends up to Sector 128, incorporating several surrounding villages. These include Aerocity, Alipur, Bairampur, Bakarpur, Ballo Majra, Balongi, Bari, Bar Majra, Bathlana, Behlol, Bhago Majra, Chajju Majra, Chaparchiri, Daun, Desu Majra, Dyalpur, Harlalpur, Jandpur, Jhampur, Jheureri, Jhungian, Kailon, Kandala, Khuni Majra, Kishanpura,
Kurali, Landiali, Landran, Manak Majra, Manana, Matran, Naraingarh, Pattlin, Raipur Kalan, Sambalki, Saneta, Santemajra, Shafipur, Siaun, Sihanpur, Sukhgarh, Tapauli, and Thaska. GMADA also developed Aerocity as part of the expansion near Shaheed Bhagat Singh International Airport. IT City Mohali, developed under GMADA, covers approximately 1,600 acres and includes Sectors 82, 82A, and 83A. The project includes residential and commercial developments intended to support information technology and related industries.
Chandigarh Tricity Mohali and
Panchkula function as satellite cities of Chandigarh. Together with Chandigarh, they form the region commonly referred to as the
Chandigarh Tricity. Panchkula is located in Panchkula district, Haryana. ==Climate==