CHICAGO — Caleb Williams might have a pretty good grasp about his new city and surroundings.

But there’s still going to be some intricacies he’ll have to learn, including what he experienced Sunday.

Williams rifled his first pass of the game to Keenan Allen and, immediately as it escaped his fingers, something felt off.

“As soon as I was throwing it I could feel the gust of wind,” Williams said, “and it just kind of took the ball when Keenan ran the speed out.”

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The wind — which was announced as 7 mph pregame — caused the ball to end up behind Allen and the veteran wideout turned into a defensive back for a quick moment, swatting the ball down and avoiding a potential interception.

It was a learning moment for Williams, in a season where there’ll be plenty. The swirling, and sometimes changing, winds that are common at Soldier Field, especially when the weather begins to drop as the season progresses, can cause the ball to do funky things — who could forget Nathan Vasher’s 108-yard return on a missed field goal against San Francisco?

Williams knew he had to be cognizant of Mother Nature.

“So multiple times after, when we had TV timeouts or anything like that, I would spray the water bottle to figure out how aggressive the wind was and things like that,” the rookie quarterback said.

In the 2nd quarter, Williams had Cole Kmet open down the right sideline and hit him, but the throw caused Kmet to fall, preventing him from breaking it beyond the 25-yard gain it ended up being. The tight end called the ball a “slider” because of the effect the wind had on it.

“Caleb’s really affecting the pass game with the wind — I don’t think that should be looked over,” Kmet said. “It was a really tough day in the wind, and he was able to really get the ball through the air, effectively doing that stuff.

“And that’s not an easy task, especially here.”

Williams ended up having a pretty good grasp on the wind — he finished 20-for-29 with 304 yards, 2 touchdowns to DJ Moore and a 126.2 passer rating — in the best performance of his young career.

“That’s good quarterbacking, it just is,” head coach Matt Eberflus said. “It’s finding the completions, taking the shots down the field. We wanted to get our receivers involved today and we did that.”

He’s shown maturity every week this season. When Eberflus and the coaching staff challenge Williams, he responds the following week. After throwing 4 interceptions in Weeks 2 and 3, Williams has now turned in back-to-back outings of turnover-free football.

This week, Williams was challenged to be more effective with his deep shots. In his first 4 games, he was 3-22 with 118 yards, 3 INT and a 9.8 passer rating on throws of 20-plus yards.

[WATCH: Breaking down DJ Moore’s 1st touchdown against Carolina]

Sunday, both touchdown passes to Moore were thrown over 20 yards. The second was a perfect pass in the end zone after Williams had caught the safety cheating to the right side, knowing Moore would be open after he beat his defender.

That’s a positive development for the Bears.

[MORE: Bears proud of deep offensive looks]

“He’s learning and growing,” Eberflus said. “You can see that in the course of these games that we’ve had. He needs it to continue. He knows that. You just have to level up, keep leveling up.

“Every time we’ve challenged him, he’s done that, ever since the summer — learn the offense, coming back [to camp] better, all the way through training camp and now the season, just getting better and better every single week.”