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Heat Advisory in Effect as Mountain Brook Faces H…

Heat Advisory in Effect as Mountain Brook Faces Highs Near 93°F

Heat Advisory in Effect as Mountain Brook Faces Highs Near 93°F

Mountain Brook, Alabama — The next seven days bring highs ranging from 88°F to 93°F, lows from 69°F to 72°F, rain chances focused on Monday, Tuesday, Wednesday and Thursday. Today's forecast is still included below, but the main story is the week ahead.

⚠️ Active Weather Alerts

  • 🟡 Heat Advisory: Heat Advisory issued August 20 at 9:40PM CDT until August 21 at 9:00PM CDT by NWS Birmingham AL
  • Drink plenty of fluids, stay in an air-conditioned room, stay out of
    the sun, and check up on relatives and neighbors. Young children and
    pets should never be left unattended in vehicles under any
    circumstances.

    Take extra precautions if you work or spend time outside. When
    possible, reschedule str

What Matters Most This Week

  • Warmest day: Today, with a high near 93°F.
  • Coolest morning: Sunday, with a low near 69°F.
  • Rain chances: Best chances on Monday, Tuesday, Wednesday and Thursday; seven-day expected rainfall totals about 0.63 inches.
  • Storm watch: Thunderstorm chances appear in the forecast on Today, Monday, Tuesday, Wednesday and Thursday.
  • Sun safety: UV runs high on Today, Saturday, Sunday and Tuesday and other days.

7-Day Forecast

DayConditionsHigh / LowRainPeak Gust
Today
8/21
Chance Showers And Thunderstorms93° / 72°27%22 mph
Saturday
8/22
Sunny93° / 72°0%21 mph
Sunday
8/23
Sunny92° / 69°4%20 mph
Monday
8/24
Slight Chance Showers And Thunderstorms90° / 69°24% / 0.09"19 mph
Tuesday
8/25
Chance Showers And Thunderstorms89° / 71°31% / 0.22"13 mph
Wednesday
8/26
Chance Rain Showers then Chance Showers And Thunderstorms90° / 71°46% / 0.14"19 mph
Thursday
8/27
Chance Showers And Thunderstorms88° / 72°47% / 0.18"22 mph

Today's Details — Friday, August 21

  • Conditions: Chance Showers And Thunderstorms
  • High / Low: 93°F / 72°F
  • Wind: NW 9 mph, gusts to 22 mph
  • Precipitation: 27% chance
  • UV Index: 7.7 — Very High — limit outdoor exposure
  • Sunrise / Sunset: 06:13 / 19:26
  • Daylight: 13.2 hours (10.3 hours of sunshine expected)

What Matters Most Today

  • Sun safety: UV index reaches 7.7; sunscreen still matters even with cloud cover.
  • Best outdoor window: Morning (lowest average rain risk).

Comfort & Conditions

  • Humidity: 58%
  • Dew Point: Up to 72°F — muggy conditions

Hour-by-Hour Breakdown

  • Morning (6AM–Noon): Overcast, 78°F, 72% humidity
  • Afternoon (Noon–6PM): Overcast, 90°F, 48% humidity
  • Evening (6PM–Midnight): Overcast, 80°F, 54% humidity

Air Quality & Allergens

  • Air Quality Index: 62 (peak 92) — Moderate
  • Acceptable air quality; some pollutants may be a concern for sensitive individuals.
  • PM2.5: 21.4 µg/m³

Forecast data provided by Open-Meteo. Air quality data from Open-Meteo Air Quality API. For severe weather alerts, visit your local National Weather Service office.

Last updated: August 21, 2026
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