Today | Weather | Tuesday, July 21, 2026
Active Weather Warnings

Weather in Redmond, Washington

09:40 PM
Now
Cloudy Night
79° F
Feels Like 75°
Precipitation 0 %
Wind 6 mph
Humidity 52 %
Today
Cloudy Night
Day 93°
Night 64°
Precipitation 0 %
Wind 5 mph

Redmond Weather Forecast Updated

Last updated on
Weather Forecast History
Last Year's Weather on This Day (July 21, 2025)

Day

79°

Night

55°

Air Quality in Redmond

NOW
56 AQI
Moderate air quality Dominant pollutant: PM2.5

Pollutant Concentrations:

PM2.5 14.69 µg/m³
PM10 15.95 µg/m³
O3 0.028 ppm
NO2 3.5 ppb
SO2 0.3 ppb
CO 0.13 ppm
NH3 1.5 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 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)
PM2.514.69 µg/m³
PM1015.95 µg/m³
O355.54 µg/m³
NO26.65 µg/m³
SO20.83 µg/m³
CO148.52 µg/m³
NH31.5 µg/m³
NO0 µg/m³

Weather Alerts and Warnings for Redmond

Moderate Expected Likely

Heat Advisory

Heat Advisory issued July 21 at 3:19PM PDT until July 22 at 11:00PM PDT by NWS Seattle WA
Jul 21, 3:19 PM Jul 22, 11:00 PM
WHAT: Hot conditions with high temperatures in the mid to upper
90s expected and low temperatures from 60 to 65 degrees. This will
pose a major risk of heat-related illness.

WHERE: Eastern Kitsap County, City of Seattle, Downtown Everett /
Marysville Area, Eastside, Foothills and Valleys of Central King
County, Foothills and Valleys of Pierce and Southern King
Counties, Foothills and Valleys of Snohomish and Northern King
Counties, Lowlands of Pierce and Southern King Counties, and
Shoreline / Lynnwood / South Everett Area.

WHEN: Until 11 PM PDT Wednesday.

IMPACTS: Extreme heat will significantly increase the risk of
heat-related illnesses for much of the population, especially
those who are heat sensitive and those without effective cooling
or adequate hydration.

ADDITIONAL DETAILS: Areas immediately along the water will
experience cooler daytime high temperatures.
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Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. For sheltering information and other human services in your area, dial 2 1 1 during business hours or visit wa211.org anytime.
Updated: Jul 21, 8:24 PM Source: NWS Alert