This map shows the location of Karachi, Pakistan, where a heat wave has taken more that 100 lives.

(CNN) — As many as 140 people have died in a heat wave in Karachi, Pakistan’s largest city, CNN affiliate GEO TV reported Monday (June 22).

Agence France-Presse, citing Provincial Health Secretary Saeed Mangnejo, reported 122 people have died since Saturday.

Saturday’s temperature reached 44.8 degrees Celsius (112.64 degrees Fahrenheit), which is the highest-recorded temperature in Pakistan in the past 15 years, according to CNNI senior weather producer Taylor Ward.

Sunday’s temperature dipped to 42.5 Celsius (108.5 F), and that slight temperature decline will continue over the next few days, he said.

Most Pakistanis are observing Ramadan, meaning people are fasting from sunup to sundown during the heat wave, CNN News Editor Archith Seshadri said.

Agence France-Presse reported that 47.0 (116.6 F) is the highest temperature reported in June in Karachi. The Pakistani government says 47.8 (118.04 F), recorded in May 1938, is the all-time high.

To the east, a heat wave struck India last month, killing more than 1,000 people in a week.

This story was first published on CNN.com, “Pakistan heat wave claims at least 140 lives in Karachi.”