Pasadena residents will sweat through a stretch of hot weather over the coming days, with National Weather Service forecasters calling for highs near 96 today before a brief midweek cooldown gives way to an even stronger surge of heat that could push temperatures close to 99 by Saturday.
Today brings mostly sunny skies and hot conditions, with the high topping out near 96 degrees. A light south wind will shift to the south-southwest at 5 to 10 mph through the morning, offering little relief from the heat.
The next 24 to 48 hours hold steady in the mid-90s. Monday stays mostly sunny with a high near 95, followed by a mostly clear night dropping to around 64. Tuesday eases slightly to a high near 93 under full sun. No rain is in the forecast for Pasadena at any point this week, and overnight lows will hover in the mid-60s.
Looking across the full forecast period, the temperature story is one of dip and rebound. After the mid-90s early in the week, readings slide to a high near 89 on Wednesday — the coolest day of the stretch — before climbing again to 95 on Thursday, 97 on Friday, and a peak near 99 on Saturday. Nighttime lows creep upward as well, from around 64 early in the week to roughly 67 by Friday night.
With no precipitation expected, winds will remain generally light throughout the week. Look for breezes out of the south and south-southwest at about 5 to 10 mph during daytime hours, easing to near calm in the evenings.
The weekend is shaping up as the hottest phase of this pattern. Friday arrives sunny and hot with a high near 97, and Saturday turns up the heat further, reaching near 99 under sunny skies. Residents planning outdoor activities in the Rose City should aim for the cooler morning hours and stay hydrated.
Pasadena sits under both a Heat Advisory and an Air Quality Alert, so forecasters urge caution. Heat of this magnitude raises the risk of heat-related illness, particularly for older adults, young children, and those without access to cooling. The air quality alert means residents sensitive to poor air — including people with asthma or heart conditions — should limit prolonged outdoor exertion. Check on vulnerable neighbors, never leave children or pets in parked vehicles, and take advantage of local cooling centers if your home lacks adequate air conditioning.
Beyond the immediate weekend, the extended outlook offers no quick break, with hot, sunny days expected to continue into next week as the ridge of high pressure holds firm over Southern California.
In short, Pasadena faces a hot week bookended by two heat peaks — mid-90s now, a modest Wednesday reprieve near 89, and a return to dangerous heat approaching 99 by Saturday. With advisories in effect, forecasters recommend residents plan ahead, stay cool, and keep hydrated through the weekend.
Here is the latest National Weather Service forecast for Pasadena as of Sunday, Jul 26, 2026 at 1:42 am PDT
Today: Mostly sunny and hot, with a high near 96. Light south wind becoming south southwest 5 to 10 mph in the morning.
Tonight: Partly cloudy, with a low around 65. South southwest wind around 5 mph becoming calm in the evening.
Monday: Mostly sunny, with a high near 95. Light south wind becoming south southwest 5 to 10 mph in the morning.
Monday Night: Mostly clear, with a low around 64. South southwest wind around 5 mph becoming calm in the evening.
Tuesday: Sunny, with a high near 93. Light south southeast wind becoming south southwest 5 to 10 mph in the afternoon.
Tuesday Night: Mostly clear, with a low around 64.
Wednesday: Sunny, with a high near 89.
Wednesday Night: Mostly clear, with a low around 65.
Thursday: Sunny, with a high near 95.
Thursday Night: Mostly clear, with a low around 66.
Friday: Sunny and hot, with a high near 97.
Friday Night: Mostly clear, with a low around 67.
Saturday: Sunny and hot, with a high near 99.
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