With nine games left, it's a three-horse race for the two automatic promotion places – Latics and Sunderland are 12 points clear of fourth-placed Derby, while Ipswich are nine better off.
At the same time as Latics do battle at the Withdean Stadium, Sunderland host Plymouth while Ipswich travel to Cardiff.
All three promotion chasers won at the weekend and will be well aware that this evening is not the time for a slip up.
Jewell said: "It has been pointed out Sunderland and Ipswich are keeping the pressure up on us, but aren't we keeping the pressure on them?
"We can't affect what they do in matches, we can only control our own games and that is something I've stressed to the players.
"There are still another 27 points to play for and I'm sure there will be more twists and turns before the season ends.
"This time last week, Ipswich were supposedly on the floor after we beat them, now they're feeling good about themselves after thrashing Nottingham Forest 6-0.
"A few weeks ago, they were six points clear at the top and all the talk was of the rest playing for second place.
"Things can quickly change and if you start worrying about other results, you take your eye off the ball."
Tonight's game will be played in the strange surroundings of the Withdean Stadium, Brighton's home while they fight a long battle to build a new ground in the town.
Sunderland, Preston and Leeds have all been beaten at the converted athletics stadium this term, and Jewell won't allow the venue to be used as an excuse for a below-par show.
He said: "Brighton's home form has been quite good and we know it is going to be a difficult game.
"We have to forget about the surroundings and concentrate on getting the three points.
"Their ground is a bit like the Robin Park Arena where we play our reserve matches, with a running track round the pitch.
"But it is not stadiums which win football matches, it's the players, and we aren't going to use that as an excuse."
Latics are set to be unchanged tonight having suffered no fresh injuries from Saturday's win over Millwall.
Jason Roberts sat out training yesterday to rest a long-standing groin strain but will be fit to face the manager who gave him his break in league football.
Brighton boss Mark McGhee was in charge at Wolves when he signed the striker from Hayes United for £250,000.
He was sold less than a year later to Bristol Rovers, a decision taken at boardroom level rather then by the boss.
So McGhee is well aware of the threat posed by Roberts and fellow striker Nathan Ellington – a player he tried to buy when managing Millwall.
He said: "Roberts is quick, strong and he's getting more clinical as a goalscorer.
"He went from Wolves down the league again, came back up with West Brom, struggled to find real form at that level, but has worked to get better.
"He's got a great partnership with Nathan Ellington which is producing goals.
"Nathan is slightly different to Jason, a very strong player who is physically difficult to get off the ball. He's got a bit of imagination as well.
"The two of them are getting better, so I don't see why they cannot score goals as a partnership another level up.
"Whether the team behind them can create enough chances for them is the big question."
* Latics' third-choicegoalkeeper James Salisbury has joined Halifax Town on loan, and kept a clean sheet on his debut in last night's televised 2-0 Conference victory at home to York City.