Today | Weather | Thursday, May 21, 2026

Weather in Alexandria, Virginia

01:05 AM
Now
Stormy Weather
73° F
Feels Like 73°
Precipitation 64 %
Wind 6 mph
Humidity 84 %
Today
Rainy Weather
Day 72°
Night 55°
Precipitation 91 %
Wind 8 mph
UV Index (0 - 11+) 2

Alexandria Weather Forecast Updated

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

Day

61°

Night

57°

Wind

12 mph

UV Index

2

Precipitation

100 %

Air Quality in Alexandria

NOW
19 AQI
Good air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 3.27 µg/m³
PM10 3.87 µg/m³
O3 0.021 ppm
NO2 3.1 ppb
SO2 0.3 ppb
CO 0.13 ppm
NH3 0.59 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)
PM2.53.27 µg/m³
PM103.87 µg/m³
O340.6 µg/m³
NO25.86 µg/m³
SO20.73 µg/m³
CO144.82 µg/m³
NH30.59 µg/m³
NO0 µg/m³