UV Index Today

Real-time solar radiation monitoring

Seattle, Washington, United States
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Seattle

Washington, United States • Local time: 16:33

Live UV Index
16:00
4.0
Moderate
Peak 5.5 at 14:00

Temp

20.4°C
Sunny

Status

Sunny

Max

20.4°C

Next 3 Hours

2.8
17:00
1.6
18:00
0.3
19:00

Humidity

55%

Cloud

9%

Wind Spd

13.5km/h

"Moderate risk. Seek shade near midday."

Today's UV Forecast

Hourly prediction for Seattle · Peak 5.5 at 14:00

—
00
—
01
—
02
—
03
—
04
—
05
—
06
—
07
0.5
08
1.4
09
2.5
10
3.8
11
4.8
12
5.5
13
5.5
14
5.1
15
4.0
16
2.8
17
1.6
18
0.3
19
—
20
—
21
—
22
—
23

Sunburn time at UV 4.0

Estimate for Seattle based on your skin type. Estimates only — not medical advice.

Skin type (Fitzpatrick)

Unprotected

25 min

Type II · no sunscreen

Recommended

SPF 50

Moderate UV with fair skin — use broad-spectrum SPF 50 and seek shade near midday.

With SPF 50

12+ hours

Theoretical window — apply enough and reapply every 2 hours

Quick take: Fairly short unprotected window — apply sunscreen before heading out.

Open full calculator with SPF options

Location Map

47.5956, -122.3244 · Elev. 18 m · America/Los_Angeles

Open in Google Maps

Today's UV outlook for Seattle

Today's forecast for Seattle peaks at UV 5.5 around 14:00. The hourly outlook shows 6 hours at moderate or above (UV 3+). The live reading is UV 4.0 right now.

UV stays mostly in the low-to-moderate range today, but the hourly bars still show when exposure climbs. Fair skin still benefits from SPF for extended time outdoors.

Compare with other cities in Washington, or read practical planning notes in the blog .