Crews from the Phoenix Fire Department are working a hay fire near 70th and Southern avenues in Laveen.
A neighborhood is just south of the fire, and smoke lingered between houses and over sidewalks Monday night.
One resident planned to go to a hotel to not wake up with a headache.
Another resident, Justin Schwimmer, planned to stay, but still felt the fire's effects.
"It's pretty nauseating," Schwimmer said. "I definitely feel... a little bit light headed."
Fire officials say crews are fighting the main body of the fire while protecting the neighborhood of homes in the area.
The cause has not been determined and no one has been hurt, a fire department spokesperson said Monday night.
Phoenix fire crews say they expect to be working the fire for a prolonged period of time because the seat of the fire will be difficult to reach due to stacks of hay on the property.
Hay fire leaves haze in PHX neighborhood near 70th Ave / Southern. Resident plans to get a hotel so he doesn't wake up with a headache. pic.twitter.com/WUgAodqM6T
— Jon Erickson (@JonEricksonTV) April 11, 2017
After extinguishing the majority of the fire, crews turned to tractors to move the hay around and get at the remaining hot spots.
Officials said they would likely remain on scene for most of the night and into Tuesday morning.
Stay with ABC15 and abc15.com for updates on this developing story.