Active National Weather Service alert for Pasadena, Texas 77503: Heat Advisory. Heat Advisory issued August 23 at 2:58PM CDT until August 24 at 7:00PM CDT by NWS Houston/Galveston TX Until Mon, 7:00 PM CDT.
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Pasadena, Texas 77503 weather, straight from the source.

Current conditions, official National Weather Service forecasts and alerts, rain timing, local radar, air quality, wind, humidity, sunrise, sunset, and the latest reported update for Pasadena, Texas 77503. Always follow local warnings and emergency instructions.

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Use current official weather information for Pasadena, Texas 77503 before making weather-sensitive plans.

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Weather status

Heat Advisory

Heat Advisory issued August 23 at 2:58PM CDT until August 24 at 7:00PM CDT by NWS Houston/Galveston TX Expires Mon, 7:00 PM CDT.

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What’s next

Hourly forecast

Pasadena, Texas 77503

Check the latest hourly conditions, seven-day outlook, rain timing, wind, sunrise and sunset for Pasadena, Texas 77503. Forecasts and alerts update from NOAA and the National Weather Service.

98°Slight Chance Showers And Thunderstorms20% rain
98°Slight Chance Showers And Thunderstorms20% rain
96°Slight Chance Showers And Thunderstorms20% rain
94°Partly Cloudy12% rain
90°Partly Cloudy12% rain
89°Mostly Clear12% rain
86°Mostly Clear12% rain
85°Mostly Clear10% rain

Next 24 hours

Rain Timeline

Highest chance 20%

Scattered precipitation is possible. The highest official hourly chance is 20%; check the radar before heading out.

20%Thunderstorms
20%Thunderstorms
20%Thunderstorms
12%None
12%None
12%None
12%None
10%None
8%None
6%None
4%None
3%None
3%None
2%None
1%None
1%None
1%None
1%None
1%None
1%None
1%None
1%None
1%None
1%None

Official NWS outlook

7-Day Forecast

High / low temperatures

Today

! NWS
99°80°

Slight Chance Showers And Thunderstorms

Precipitation
20%
Wind
S 10 mph
Sunrise
6:54 AM
Sunset
7:55 PM

Mon

98°80°

Mostly Sunny

Precipitation
1%
Wind
SW 5 to 10 mph
Sunrise
6:54 AM
Sunset
7:54 PM

Tue

99°81°

Mostly Sunny

Precipitation
12%
Wind
S 5 to 10 mph
Sunrise
6:55 AM
Sunset
7:52 PM

Wed

100°81°

Mostly Sunny

Precipitation
6%
Wind
S 5 to 10 mph
Sunrise
6:56 AM
Sunset
7:51 PM

Thu

99°80°

Sunny then Slight Chance Showers And Thunderstorms

Precipitation
16%
Wind
SW 5 mph
Sunrise
6:56 AM
Sunset
7:50 PM

Fri

96°79°

Slight Chance Showers And Thunderstorms

Precipitation
21%
Wind
S 5 to 10 mph
Sunrise
6:57 AM
Sunset
7:49 PM

Sat

95°79°

Sunny

Precipitation
13%
Wind
S 0 to 10 mph
Sunrise
6:57 AM
Sunset
7:48 PM

Forecasts, icons, precipitation, wind, and alerts are from the National Weather Service. Sunrise and sunset are calculated locally for the selected coordinates.

Weather for a healthier day

Healthy Weather

Real Feel107°F
Walking is not recommended now

Current official weather conditions may be unsafe for this activity.

WindE8 mph
Best walk timeBetter weather window: 3 AM–5 AM

Walking: 3% average rain chance, near 82°F, with winds near 5 mph. Review the active Heat Advisory.

Official EPA AirNowLocal air qualityPasadena, Texas 77503
View AQI +
More weather details
Wind gusts18mph
Rain now20%next hour
Humidity47%current
UV indexCheckingEPA forecast

Wind impact: Noticeable breeze with generally minor outdoor impact.

Full Healthy Weather guides and reminders →

“Better weather window” is planning guidance based on official NWS data—not a promise of safe conditions. Review active alerts and radar before leaving.

Storm & DetailsGusts, pressure, visibility and official risk outlooksView details +
Wind gust18 mph
Pressure
Visibility10.0 mi
Peak rain chance20%
Dew point73°F
Active alerts1

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Active NWS alerts

Weather safety ↗

Moderate · Expected

Heat Advisory

Applies to: Houston; Trinity; Madison; Walker; San Jacinto; Polk; Burleson; Brazos; Washington; Grimes; Montgomery; Northern Liberty; Colorado; Austin; Waller; Inland Harris; Chambers; Wharton; Fort Bend; Inland Jackson; Inland Matagorda; Inland Brazoria; Inland Galveston; Southern Liberty; Coastal Harris; Coastal Jackson; Coastal Matagorda; Coastal Brazoria; Coastal Galveston; Matagorda Islands; Brazoria Islands; Galveston Island; Bolivar PeninsulaIssued by: NWS Houston/Galveston TXHeat Advisory issued August 23 at 2:58PM CDT until August 24 at 7:00PM CDT by NWS Houston/Galveston TX
Alert details* WHAT...Peak heat index values between 106 and 110 * WHERE...Portions of south central and southeast Texas. * WHEN...Until 7 PM CDT Monday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.
Safety instructionsDrink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
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