the air temperature is 70 degrees, and the relative humidity is 90 which conclusions can be made.
the temperature must rise in order for air to become saturated with water vapor
Based on the given information, the air temperature is 70 degrees and the relative humidity is 90%. Given this, we can conclude that the air is close to becoming saturated with water vapor.
When the relative humidity is high, it means that the air is holding a significant amount of moisture compared to its maximum capacity to hold moisture at that temperature. So, if the temperature were to rise, the air would have a higher capacity to hold moisture and may become saturated with water vapor.