The Best Window Cleaning Schedule for Southern California Homes

What our climate actually does to glass

Southern California gives windows a pretty rough year. Spring drops a heavy pollen layer. Summer brings dry, dusty Santa Ana winds and zero rinsing rain. Fall adds wildfire smoke and ash on bad years. Winter mixes in light rain that turns existing dust into mineral-flecked spots.

Each season leaves a different residue, which is why a 'clean once and forget it' approach almost never holds up here for a full year.

A simple year-round schedule

• Late spring (May): full interior + exterior, plus screens.
• Late fall (October–November): exterior-only refresh before holiday guests.
• Add: solar panel cleaning once a year, ideally late spring.
• Add: hard water restoration on first-floor sprinkler-hit glass as needed.

When to step up to quarterly

• Sprinklers regularly hit the windows.
• Home borders open fields, vineyards, or active construction.
• Two-story home with big rear elevations facing pools or backyards.
• Storefront or commercial entry glass.
• You entertain often or list your home for short-term rental.

Why timing matters more than people think

Cleaning right after pollen drops in late spring resets the glass for the whole dry season. Cleaning again in late fall catches summer dust before winter rain bakes it on. Two well-timed visits do more than four randomly scheduled ones.