Today looks fairly quiet.
- Rain
- 0%
- Humidity
- 62–93%
- Wind
- 7 mph
Current concerns
Outdoor planning
Now
- 52°Sunny0% rain92% humidityGusts 6 mph
- 54°Sunny0% rain90% humidityGusts 6 mph
- 56°Sunny0% rain85% humidityGusts 6 mph
- 59°Sunny0% rain80% humidityGusts 6 mph
- 64°Sunny0% rain73% humidityGusts 6 mph
- 66°Sunny0% rain68% humidityGusts 7 mph
- 67°Sunny0% rain65% humidityGusts 7 mph
- 69°Sunny0% rain64% humidityGusts 6 mph
- 68°Sunny0% rain64% humidityGusts 6 mph
- 67°Mostly Clear0% rain67% humidityGusts 5 mph
- 65°Mostly Clear0% rain67% humidityGusts 5 mph
- 62°Mostly Clear0% rain66% humidityGusts 5 mph
- 61°Mostly Clear0% rain65% humidityGusts 5 mph
- 60°Mostly Clear0% rain64% humidityGusts 5 mph
- 60°Mostly Clear0% rain62% humidityGusts 5 mph
- 58°Mostly Clear0% rain65% humidityGusts 5 mph
- 58°Mostly Clear0% rain64% humidityGusts 5 mph
- 58°Mostly Clear0% rain62% humidityGusts 5 mph
- 57°Mostly Clear0% rain63% humidityGusts 5 mph
- 57°Partly Cloudy0% rain65% humidityGusts 3 mph
- 56°Partly Cloudy0% rain66% humidityGusts 3 mph
- 55°Mostly Sunny0% rain68% humidityGusts 3 mph
- 55°Mostly Sunny0% rain68% humidityGusts 3 mph
- 55°Partly Sunny0% rain69% humidityGusts 5 mph
A little farther out
The next five days
Friday looks fairly quiet.
- Rain
- 38%
- Humidity
- 49–71%
- Wind
- 15 mph
Saturday has a real shower chance.
- Rain
- 57%
- Humidity
- 70–91%
- Wind
- 20 mph
Sunday looks fairly quiet.
- Rain
- 1%
- Humidity
- 72–91%
- Wind
- 9 mph
Monday looks fairly quiet.
- Rain
- 12%
- Humidity
- 70–93%
- Wind
- 5 mph
- 69° / 52°Today looks fairly quiet.0% rain · Humidity 62–93% · Wind 7 mph
- 72° / 55°Friday looks fairly quiet.38% rain · Humidity 49–71% · Wind 15 mph
- 61° / 54°Saturday has a real shower chance.57% rain · Humidity 70–91% · Wind 20 mph
- 58° / 48°Sunday looks fairly quiet.1% rain · Humidity 72–91% · Wind 9 mph
- 58° / 47°Monday looks fairly quiet.12% rain · Humidity 70–93% · Wind 5 mph
Environmental watch
Air quality + smoke
Air quality
Seattle-Bellevue-Kent Valley area · Updated Thu 8:25 AMModerate now, easing to Good through Sat 12 PM.
54 is in the Moderate range (51–100). Most people can be active outside; if you’re unusually sensitive to fine particles, consider a shorter or easier outing.
Sky check
No plume detected overhead
Satellite view · Updated Thu 5:45 AMAir near ground54 · Moderate US AQI
Rain, in motion · Past four hours
Mercer Island radar
An active official alert is in effect. Its affected area is described above the briefing.
Radar animation for Mercer Island, covering the past four hours. A marked spot changes the map view, not the forecast on this page.
Outdoor fire check
Thinking about a backyard fire?
Weather is less concerning around 4 PM–7 PM.
Humidity stays higher and winds stay lighter for at least three hours.
Next 12 hoursChoose a time to see what is driving the concern.
Check local rules. Weather is only part of the decision. Check city, county, and land-manager fire restrictions before lighting any outdoor fire.
Nearby regional view
Explore Seattle-Tacoma-Bellevue
About 19 miles away, the Seattle-Tacoma-Bellevue hub looks more deeply at Seattle-Tacoma-Bellevue, WA. It reflects that wider area rather than Mercer Island’s exact conditions.
About these readingsSources and local limits
Weather
Forecasts, alerts, and radar come from NOAA and the National Weather Service.
Air quality
This reading describes Seattle-Bellevue-Kent Valley area, about 5 miles away. Conditions can differ at this exact spot.
Smoke
Satellite imagery shows smoke overhead. It cannot tell us how much smoke has reached breathing level.
This page represents Mercer Island, WA, so conditions can vary from street to street. Environmental data: AirNow · participating air agencies · preliminary real-time US AQI · NOAA Hazard Mapping System · satellite-observed smoke.