Ferrari star Alonso heads into Sunday's Indian Grand Prix six points adrift of Red Bull's Sebastian Vettel following a run of three successive victories for the reigning double world champion.
To underline Red Bull's current dominance, the Milton Keynes-based team locked out the front row of the grid at the Buddh International Circuit on Saturday, doing so for the third consecutive race for the first time in their history.
Vettel clinched the 35th pole of his F1 career, finishing 0.044 seconds ahead of Webber, with Alonso fifth behind an all-McLaren second row spearheaded by Lewis Hamilton.
With Vettel and Red Bull in such imperious form, there appears no stopping the 24-year-old German and the team in their bid for more glory.
However, asked whether he felt the championship was slipping away in the face of Red Bull's superiority, Alonso said: "Not at all.
"Of course, it's more challenging for us, but I'm 100 per cent confident we will fight for the championship and we will win it.
"Red Bull are dominant on Saturday, they have the fastest car, but on Sundays our pace improves a little.
"If you look at the last race in Korea we put pressure on Webber in particular, so let's wait for tomorrow [Sunday].
"I feel we can have a good race, that we can score some good points, hopefully more than Sebastian, and then in the final races be more competitive.
"The first target is to finish in front of them tomorrow [Sunday], and I feel we have a chance to do it."
Ferrari recently blamed an unreliable wind tunnel and the data from it for undermining their own bid for success.
Alonso, however, knows he and the team have been fighting an uphill battle all season, not just in recent weeks when Vettel has assumed control.
"We are improving our car, making it faster, not just for this race but the last few grands prix. This happens at every team," said Alonso.
"But when you are not the fastest you need to put something big on the car, you need a big upgrade, and what we have here in India is a small upgrade.
"We are waiting for some new parts for the final few races, and then hopefully we'll be close to Red Bull who, at the moment, are very dominant.
"But it's been the general situation all year, and not just the last four races, that the wind tunnel has not been giving us the right information and we have lost pace.
"We were off the pace in February, off the pace in July and off the pace in September. We're more or less consistent."