Today | Weather | Tuesday, April 21, 2026
Active Weather Warnings

Weather in Cedar Park, Texas

05:43 PM
Now
Rainy Weather
63° F
Feels Like 61°
Precipitation 55 %
Wind 8 mph
UV Index (0 - 11+) 0
Humidity 98 %
Today
Rainy Weather
Day 63°
Night 61°
Precipitation 100 %
Wind 8 mph
UV Index (0 - 11+) 2

Cedar Park Weather Forecast Updated

17 minutes ago
Last updated on

Air Quality in Cedar Park

NOW
34 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 2.92 µg/m³
PM10 3.81 µg/m³
O3 0.036 ppm
NO2 1.6 ppb
SO2 0.4 ppb
CO 0.13 ppm
NH3 1.21 µg/m³
NO 0.23 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)
PM2.52.92 µg/m³
PM103.81 µg/m³
O371.54 µg/m³
NO23.08 µg/m³
SO21 µg/m³
CO145.05 µg/m³
NH31.21 µg/m³
NO0.23 µg/m³

Weather Alerts and Warnings for Cedar Park

Minor Expected Likely

Flood Advisory

Flood Advisory issued April 21 at 2:57PM CDT until April 21 at 6:15PM CDT by NWS Austin/San Antonio TX
Apr 21, 2:57 PM Apr 21, 6:15 PM
WHAT: Urban and small stream flooding caused by excessive
rainfall continues.

WHERE: Williamson County

WHEN: Until 615 PM CDT.

IMPACTS: Minor flooding in low-lying and poor drainage areas.
Dangerous flows over low-water crossings. Water over roadways.

ADDITIONAL DETAILS:
- At 256 PM CDT, Doppler radar and automated rain gauges
indicated heavy rain due to thunderstorms. This is causing
urban and small stream flooding. Between 2 and 4.5 inches of
rain have fallen.
- Additional rainfall amounts up to 1 inch are expected over
the area. This additional rain will result in minor flooding.
- Some locations that will experience flooding include...
Austin, Round Rock, Cedar Park, Georgetown, Pflugerville,
Taylor, Granger, Serenada, Windemere, Anderson Mill, Leander,
Hutto, Bartlett, Liberty Hill, Jarrell, Florence, Thrall,
Weir, Georgetown Dam and Sun City.
- http://www.weather.gov/safety/flood
+ Read More
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. Stay away or be swept away. River banks and culverts can become unstable and unsafe.
Updated: Apr 21, 5:25 PM Source: NWS Alert