Having slight to severe dizziness with legs feeling weak at times. this feeling is everyday almost around the clock. what could be the reason?

Evaluation needed: There are some things to be concerned about such as anemia, low blood count which can cause light headedness or weakness. Heart rhythm abnormalities are a concern such as a rapid or very low heart rate. There also could be vertigo where the room feels like it is spinning. There may be a concern for dehydration if you have been working in the heat. Visit a local primary care doctor to be assessed.

Many reasons: Could be ear, heart, or metabolic cause. See your doctor.