Today | Weather | Tuesday, August 18, 2026
Active Weather Warnings

Weather in Fort Worth, Texas

01:30 AM
Now
Night
91° F
Feels Like 88°
Precipitation 0 %
Wind 9 mph
Humidity 36 %
Today
Sunny Weather
Day 102°
Night 82°
Precipitation 1 %
Wind 8 mph
UV Index (0 - 11+) 10

Warning: High UV Index Today: 10

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Fort Worth Weather Forecast Updated

Weather Forecast History
Last Year's Weather on This Day (August 18, 2025)
Cloudy Night

Day

100°

Night

79°

Wind

6 mph

Precipitation

3 %

Air Quality in Fort Worth

NOW
38 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.6 µg/m³
PM10 4.29 µg/m³
O3 0.041 ppm
NO2 1.1 ppb
SO2 0.3 ppb
CO 0.08 ppm
NH3 1.21 µg/m³
NO 0 µg/m³
PM2.5 – Fine particles <2.5μm
PM10 – Inhalable particles <10μm
O3 – Ozone
NO2 – Nitrogen dioxide
SO2 – Sulfur dioxide
CO – Carbon monoxide
NH3 – Ammonia
NO – Nitric oxide

Health Recommendations:

Air quality is considered satisfactory, and air pollution poses little or no risk.

Show raw pollutant concentrations (µg/m³)
PM2.52.6 µg/m³
PM104.29 µg/m³
O381.13 µg/m³
NO22.08 µg/m³
SO20.81 µg/m³
CO93.42 µg/m³
NH31.21 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Fort Worth

Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued August 17 at 12:45PM CDT until August 18 at 8:00PM CDT by NWS Fort Worth TX
Aug 18, 12:00 PM Aug 18, 8:00 PM
WHAT: For the Heat Advisory, heat index values up to 106. For the
Extreme Heat Warning, dangerously hot conditions with temperatures
values up to 108 expected.

WHERE: Portions of North Texas.

WHEN: For the Heat Advisory, until noon CDT Tuesday. For the
Extreme Heat Warning, from noon to 8 PM CDT Tuesday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events. Hot temperatures and high
humidity will increase the risk for heat-related illnesses to
occur, particularly for those working or participating in outdoor
activities.
+ Read More
Take extra precautions when outside by staying hydrated, wearing lightweight and loose fitting clothing, and limiting strenuous activities to the early morning or evening. Check up on relatives and neighbors. Never leave young children or pets in an enclosed vehicle, even for a short time, as temperatures can quickly rise to life-threatening levels. Know the signs and symptoms of heat exhaustion and heat stroke. To reduce risk when outdoors, 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 911 ASAP if you or someone you know is exhibiting signs of heat stroke. Extreme heat is dangerous, especially for those without reliable shelter. Limit time outdoors during the hottest time of the day, typically from 2 to 7 PM, rest in the shade when possible, and drink plenty of water. Locate nearby cooling centers through local resources or dial 2-1-1 in Texas.
Updated: Aug 17, 6:27 PM Source: NWS Alert
Moderate Expected Likely

Heat Advisory

Heat Advisory issued August 17 at 12:45PM CDT until August 18 at 12:00PM CDT by NWS Fort Worth TX
Aug 17, 12:45 PM Aug 18, 12:00 PM
WHAT: For the Heat Advisory, heat index values up to 106. For the
Extreme Heat Warning, dangerously hot conditions with temperatures
values up to 108 expected.

WHERE: Portions of North Texas.

WHEN: For the Heat Advisory, until noon CDT Tuesday. For the
Extreme Heat Warning, from noon to 8 PM CDT Tuesday.

IMPACTS: Heat related illnesses increase significantly during
extreme heat and high humidity events. Hot temperatures and high
humidity will increase the risk for heat-related illnesses to
occur, particularly for those working or participating in outdoor
activities.
+ Read More
Take extra precautions when outside by staying hydrated, wearing lightweight and loose fitting clothing, and limiting strenuous activities to the early morning or evening. Check up on relatives and neighbors. Never leave young children or pets in an enclosed vehicle, even for a short time, as temperatures can quickly rise to life-threatening levels. Know the signs and symptoms of heat exhaustion and heat stroke. To reduce risk when outdoors, 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 911 ASAP if you or someone you know is exhibiting signs of heat stroke. Extreme heat is dangerous, especially for those without reliable shelter. Limit time outdoors during the hottest time of the day, typically from 2 to 7 PM, rest in the shade when possible, and drink plenty of water. Locate nearby cooling centers through local resources or dial 2-1-1 in Texas.
Updated: Aug 17, 6:27 PM Source: NWS Alert