Today | Weather | Thursday, May 21, 2026

Weather in Killeen, Texas

12:06 AM
Now
Cloudy Weather
70° F
Feels Like 72°
Precipitation 34 %
Wind 6 mph
Humidity 94 %
Today
Stormy Weather
Day 75°
Night 66°
Precipitation 96 %
Wind 8 mph
UV Index (0 - 11+) 3

Killeen Weather Forecast Updated

20 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (May 21, 2025)
Cloudy Weather

Day

91°

Night

70°

Wind

8 mph

UV Index

12

Precipitation

1 %

Air Quality in Killeen

NOW
17 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.96 µg/m³
PM10 2.2 µg/m³
O3 0.018 ppm
NO2 1.5 ppb
SO2 0 ppb
CO 0.12 ppm
NH3 0.51 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)
PM2.51.96 µg/m³
PM102.2 µg/m³
O335.5 µg/m³
NO22.75 µg/m³
SO20.1 µg/m³
CO142.89 µg/m³
NH30.51 µg/m³
NO0 µg/m³