For anyone in Rancho Cucamonga tempted to light something off this weekend, the city's message is blunt: don't. All fireworks are banned there, and getting caught is expensive.

No fireworks, period

Unlike some of its neighbors in San Bernardino County, Rancho Cucamonga allows no consumer fireworks of any kind — not even the "safe and sane" varieties that are legal in a handful of nearby cities. Possessing or setting them off in the city carries a fine of $1,000, and a fire sparked by fireworks can bring criminal charges and liability for the damage.

The blanket ban reflects the geography. The Inland Empire city of roughly 175,000 sits against dry foothills, and summer brush primed to burn makes stray fireworks a wildfire risk, not just an injury one.

Patrols and interdiction

The enforcement is not only a warning. Investigators from San Bernardino County Fire have partnered with the Rancho Cucamonga Fire District on a Fireworks Interdiction Task Force that, since May, has targeted the routes illegal fireworks travel and stepped up patrols across the county heading into the holiday. This season the task force reported issuing 115 citations — each carrying a $1,250 fine — and seizing about 28,050 pounds of illegal fireworks, the county fire district said.

That combination — a nine-ton haul and six figures in potential penalties — is meant to hit the supply side as well as the person holding the lighter.

What residents should know

The practical takeaways are simple. In Rancho Cucamonga, there is no legal way to use fireworks at home; the safe option is an official public display. Property owners can be cited if fireworks are used on their property, so hosts bear responsibility too. And residents who see illegal fireworks can report them to local fire or law-enforcement authorities, which is how the task force traces where they are coming from.

None of it is likely to silence every backyard on the Fourth. But in a fire-prone stretch of Southern California, officials are betting that steep fines and visible patrols will keep at least some of the sparks out of the brush.