Regional Jet 900 (CRJ900)
Flight Attendant Current
Situational Awareness
Aircraft Equipment Problem Less Severe; Flight Deck / Cabin / Aircraft Event Illness / Injury
Flight Crew Returned To Gate
Aircraft
Crew boarded and Captain stated air conditioning left pack wasn't working; no APU; we had to use APU at gate. Aircraft was still hot. We boarded and left gate; right before takeoff passenger in [seat] rang Flight Attendant call button. I called Captain and advised him to give me a couple of minutes to see what's wrong with passenger. Passenger stated he was about to pass out and sweating; I asked passenger if he was diabetic and he said no. I got some water and orange juice to see if that helped. I asked passenger if he wanted to go back to gate to get checked out or if he was okay; he wanted to get seen by [medical personnel]. I let Captain know; we went back to gate and [medical personnel] was there. Aircraft was too hot and I believe that's what caused passenger to feel ill. Flight has an infant that was screaming and cheeks were so red; he was sweating due to it being so hot. Myself and other Flight Attendant had to go back with water and napkins to give mom to cool baby down; we even took the safety info card and started to fan baby. Every flight we had on that aircraft someone was complaining and feeling ill. Last flight; I got sick; after 10;000 chime I got up and immediately felt dizzy; was sweating and vomiting. Other Flight Attendant had to put cold wet napkins on my neck to cool me down. I couldn't even work. I sat in other jump seat trying to cool down. The conditions of that aircraft was unbearable and unsafe for crew and passengers. We took a record of temperature in aircraft; it read 87-93 degrees and that was in air. Crew spent all day on that unsafe aircraft.
[Report narrative contained no additional information].
Flight Attendant reported that inoperative air conditioning caused an unhealthy environment for the crew and passengers.