Working inside a steel mill as an asthmatic, will this worsen my condition?

Asthma Trigger: Hot dry or hot humid environment are asthma triggers. Make sure you drink enough fluid, take your asthma medications regularly. If any worsening- see your primary care md or pulmonologist.

Hard to speculate: Asthma is quite a variable condition & no pat answer would fit for all patients.The majority of asthma sufferers can achieve control with a treatment plan that accommodates their lifestyle and exposure to triggers. If you have severe or unstable asthma you may not be in the right line of work. Employers are required to accommodate some medical conditions but not all. If needed check with HR.