NOAA, like NASA, offers a wealth of resources for STEM teachers. Their portal can be found at: https://www.noaa.gov/education Information on their weather satellites can be found at: https://www.noaa.gov/satellites

The National Weather Service is part of NOAA, but maintains a separate educational portal at: https://www.weather.gov/education/ Information on their weather balloons can be found at multiple URLs, so it’s best to use the search function with the keyword “balloon”.