Fire-related posts from X social media platform including: Tweet ID, Tweet URL, metadata produced from CERTH processing (i.e., timestamp, location extracted from text, links to related images, fire danger level, relevance score) in the Attica region during the period of 2019 to 2021. The datasets are formatted in NGSI-LD using the SMRefLocation, SMPost and SMAnalysis entities from FIWARE's dataModel.SocialMedia.