The phrase "although today" is correct and usable in written English.
You can use it to introduce a contrasting element in a sentence. For example: "Although today is sunny, we still need to bundle up to stay warm."
Although today is dry, the sense of electricity from last week is absent.
Traditionally, the organization has been highly selective, although today few city people feel inspired to join.
Although today Bali is a democratic society, the royals are still respected as community leaders.
Italian film stars moved in en masse, although today it is mostly home to the moneyed.
Although today marks the start of winter, December has become almost 2C milder on average in the last 100 years.
Most of what we gathered about him was not public, although today people are very familiar with him".
He's passably handsome and, I understand, well-built from doing weights, although today his musculature is lost beneath a hoodie.
Citigroup also has a hold rating, although today it has cut its price target from 330p to 190p.
"There's good consistency in terms of the defending, although today we didn't have a lot to do in terms of defending," said the manager.
In 1921 the republic was established as an autonomous oblast (province) for the Komi, a Finno-Ugric people, although today Russians constitute more than half of the population.
Some were also visibly balancing work and home, although today Ms. Gillibrand and Ms. Ayotte are the only female members with small children.
