Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

Document And Entity Information - shares
3 Months Ended
Mar. 31, 2023
May 01, 2023
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Mar. 31, 2023  
Document Fiscal Year Focus 2023  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --12-31  
Entity Registrant Name SPIRE GLOBAL, INC.  
Entity File Number 001-39493  
Entity Central Index Key 0001816017  
Entity Tax Identification Number 85-1276957  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 8000 Towers Crescent Drive  
Entity Address, Address Line Two Suite 1100  
Entity Address, City or Town Vienna  
Entity Address, State or Province VA  
Entity Address, Postal Zip Code 22182  
City Area Code 202  
Local Phone Number 301-5127  
Title of 12(b) Security Class A common stock, par value of $0.0001 per share  
Trading Symbol SPIR  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Common Class A [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   146,063,378
Common Class B [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   12,058,614