* Maintenance or repairs: A school building might close for a day or several days for emergency repairs or scheduled maintenance.
* Weather events: Severe weather, such as heavy rain, snow, or wildfires, could lead to temporary closures.
* Health concerns: Outbreaks of illness (like flu or COVID-19) might cause a school, or even a district, to temporarily close for sanitization and to prevent further spread.
* Staff shortages: A lack of teachers or other essential staff could necessitate temporary closures.
* Security concerns: In rare instances, security threats might lead to a school's closure.
If you've heard about specific school closures in or near Pasadena, please provide more details (school name, date, etc.) so I can help you find the relevant information. Checking the official website of the Pasadena Unified School District (PUSD) would be the most reliable source for up-to-date information on school closures.