Paintings should be monitored and kept in a stable environment with controlled temperature and relative humidity. Issues affecting an artwork often correlate with fluctuations in temperature and relative humidity. Because environmental conditions must be tailored to reflect both the material types and the environment in which they reside, we recommend a range of 45-55% relative humidity with an annual range of no less than 40% and no more than 60%, and a temperature range of 65-77º Fahrenheit.