Today | Weather | Wednesday, March 18, 2026

Weather in League City, Texas

11:24 AM
Now
Cloudy Weather
63° F
Feels Like 64°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 5
Humidity 61 %
Today
Cloudy Weather
Day 72°
Night 54°
Precipitation 0 %
Wind 10 mph
UV Index (0 - 11+) 7

League City Weather Forecast Updated

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

Day

77°

Night

66°

Wind

17 mph

UV Index

7

Precipitation

0 %

Air Quality in League City

NOW
80 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 1.56 µg/m³
PM10 4.45 µg/m³
O3 0.064 ppm
NO2 0.2 ppb
SO2 0.1 ppb
CO 0.11 ppm
NH3 0.33 µg/m³
NO 0.05 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 acceptable; however, for some pollutants, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.

Show raw pollutant concentrations (µg/m³)
PM2.51.56 µg/m³
PM104.45 µg/m³
O3124.81 µg/m³
NO20.34 µg/m³
SO20.35 µg/m³
CO128.29 µg/m³
NH30.33 µg/m³
NO0.05 µg/m³