Narrative:

Boarding cabin temperature was very uncomfortable. Working crew instructed passengers to open vents and a/C (air conditioning) would be better once we pushed from gate. Cabin temperature continued to climb and worsen during taxi and take off. The heat was so extreme at one point passengers were yelling to the crew members begging for relief. Only hot air was blowing throughout the cabin and temps were soaring. Temperature never stabilized and only mildly improved for the duration of flight.once my crew took over the flight in ZZZ; we discussed the issue at length with our pilots. We were informed the pilots didn't realize how bad it was because the flight deck remained cool. It wasn't until they did further checks they found the cabin temperature had raised to 120 degrees. One of my crew members had a temperature app on his phone and during boarding we never went below 93 degrees.during the next 2 flights we worked; the temperature onboard during all phases improved very little; if at all. ZZZ1-ZZZ2 became increasingly worse. In ZZZ a dirty air filter was cleaned and later the F/a's (flight attendants) were informed in ZZZ1 it was an inoperative air pack in the cabin.it was unbearable for working crew members in the cabin and passengers onboard. Ground air didn't improve the situation at any point; sometimes even making the issue worse according to the pilots. Our flights were delayed because the pilots and maintenance attempted to remedy the situation to no avail at several stops. High temperatures are uncomfortable; even unbearable and they pose a health hazard to all onboard.

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Original NASA ASRS Text

Title: B737-700 Flight Attendant reported the cabin was very hot during boarding and all phases of flight.

Narrative: Boarding cabin temperature was very uncomfortable. Working crew instructed passengers to open vents and A/C (Air Conditioning) would be better once we pushed from gate. Cabin temperature continued to climb and worsen during taxi and take off. The heat was so extreme at one point passengers were yelling to the crew members begging for relief. Only hot air was blowing throughout the cabin and temps were soaring. Temperature never stabilized and only mildly improved for the duration of flight.Once my crew took over the flight in ZZZ; we discussed the issue at length with our pilots. We were informed the pilots didn't realize how bad it was because the flight deck remained cool. It wasn't until they did further checks they found the cabin temperature had raised to 120 degrees. One of my crew members had a temperature app on his phone and during boarding we never went below 93 degrees.During the next 2 flights we worked; the temperature onboard during all phases improved very little; if at all. ZZZ1-ZZZ2 became increasingly worse. In ZZZ a dirty air filter was cleaned and later the F/A's (flight attendants) were informed in ZZZ1 it was an inoperative air pack in the cabin.It was unbearable for working crew members in the cabin and passengers onboard. Ground air didn't improve the situation at any point; sometimes even making the issue worse according to the pilots. Our flights were delayed because the pilots and maintenance attempted to remedy the situation to no avail at several stops. High temperatures are uncomfortable; even unbearable and they pose a health hazard to all onboard.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.