Today | Weather | Monday, July 20, 2026

Weather in Alexandria, Virginia

04:30 PM
Now
Cloudy Weather
88° F
Feels Like 91°
Precipitation 0 %
Wind 7 mph
UV Index (0 - 11+) 5
Humidity 44 %
Today
Cloudy Weather
Day 90°
Night 73°
Precipitation 0 %
Wind 6 mph
UV Index (0 - 11+) 9

Warning: High UV Index Today: 9

High risk of harm from unprotected sun exposure. Take precautions: wear a hat, sunglasses, and apply sunscreen regularly if you’ll be outdoors for extended periods.

Alexandria Weather Forecast Updated

13 minutes ago
Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 20, 2025)
Cloudy Night

Day

91°

Night

75°

Wind

7 mph

Precipitation

49 %

Air Quality in Alexandria

NOW
62 AQI
Moderate air quality Dominant pollutant: O3

Pollutant Concentrations:

PM2.5 9.12 µg/m³
PM10 9.52 µg/m³
O3 0.058 ppm
NO2 0.8 ppb
SO2 0.3 ppb
CO 0.41 ppm
NH3 0.78 µg/m³
NO 0.18 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)
PM2.59.12 µg/m³
PM109.52 µg/m³
O3113.75 µg/m³
NO21.59 µg/m³
SO20.88 µg/m³
CO475.25 µg/m³
NH30.78 µg/m³
NO0.18 µg/m³