Palo Alto Weather Current Conditions

Current

Today's Highs/Lows

Sun & Moon

Temperature

66.3°F

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Dewpoint

55.8°F Comfortable

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Barometer

30.094 inHg Normal

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AQI

19 Good

—PM2.5

4 µg/m³

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UV Index

5.6 Moderate

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Radiation

611 W/m² High

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CO₂	432 ppm Slightly Elevated (Typical Urban)

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Rain Today

0.00 in

Rain Rate
0.00 in/h

24 Hour Rain

0.00 in

Humidity
69%

Wind

↑

3 mph
NE
(45°)

WeatherBoard

This Afternoon

NWS Forecast

Sunny. High near 67, with temperatures falling to around 64 in the afternoon. North northwest wind 3 to 8 mph.

Temperature	66.6 46.6	°F
Dew Point	56.4 44.7	°F
Barometer	30.163 30.094	inHg
AQI	21 3
PM 2.5	4 1	µg/m³
UV Index	5.9 0.0
Radiation	721 0	W/m²
CO₂	517 388	ppm
Rain	0.00	in
Rain Rate	0.00	in/h
Wind Max	9 25	mph °
Wind Average	1	mph
Wind RMS	1	mph
Vector Average Average Direction	1 44	mph °
Humidity	94 68	%
Heat Index	66.2	°F
Wind Chill	46.6	°F
ET	0.02 0.00	in

Equinox	03/20/2026 07:45:53 AM
Solstice	06/21/2026 01:24:31 AM

Downstream Systems