Today | Weather | Saturday, September 19, 2026

Weather in Alexandria, Virginia

01:40 AM
Now
Cloudy Night
72° F
Feels Like 70°
Precipitation 0 %
Wind 7 mph
Humidity 71 %
Today
Cloudy Weather
Day 79°
Night 68°
Precipitation 1 %
Wind 7 mph
UV Index (0 - 11+) 5

Alexandria Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (September 19, 2025)
Cloudy Night

Day

91°

Night

66°

Wind

6 mph

Precipitation

49 %

Air Quality in Alexandria

NOW
42 AQI
Good air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 10.1 µg/m³
PM10 10.82 µg/m³
O3 0.028 ppm
NO2 2.4 ppb
SO2 0.6 ppb
CO 0.18 ppm
NH3 0.37 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)
PM2.510.1 µg/m³
PM1010.82 µg/m³
O355.95 µg/m³
NO24.45 µg/m³
SO21.53 µg/m³
CO205.67 µg/m³
NH30.37 µg/m³
NO0 µg/m³