In my case, I only care about 64-bit systems.
aws ec2 describe-images --filters "Name=root-device-type,Values=ebs" "Name=architecture,Values=x86_64" --query 'Images[?BlockDeviceMappings[0].Ebs.VolumeSize<=`10`]'
Or a little faster:
aws ec2 describe-images --filters "Name=root-device-type,Values=ebs" "Name=architecture,Values=x86_64" "Name=block-device-mapping.volume-size,Values=1,2,3,4,5,6,7,8,9,10"
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