Palo Alto Weather Current Conditions

Current

Today's Highs/Lows

Sun & Moon

Temperature

42.0°F

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Dewpoint

39.6°F Dry & Crisp

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Barometer

30.054 inHg Normal

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AQI

56 Moderate

—PM2.5

12 µg/m³

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UV Index

0.0 Low

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Radiation

0 W/m² Dark/Nighttime

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CO₂	583 ppm High (Polluted/Stagnant Air)

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Rain Today

0.00 in

Rain Rate
0.00 in/h

24 Hour Rain

0.00 in

Humidity
91%

Wind

0 mph

WeatherBoard

Overnight

NWS Forecast

Mostly clear, with a low around 45. West southwest wind around 5 mph.

Temperature	43.2 42.0	°F
Dew Point	40.8 39.6	°F
Barometer	30.063 30.048	inHg
AQI	60 55
PM 2.5	14 12	µg/m³
UV Index	0.0 0.0
Radiation	0 0	W/m²
CO₂	598 581	ppm
Rain	0.00	in
Rain Rate	0.00	in/h
Wind Max	2 124	mph °
Wind Average	0	mph
Wind RMS	1	mph
Vector Average Average Direction	0 242	mph °
Humidity	92 91	%
Heat Index	41.5	°F
Wind Chill	42.0	°F
ET	0.00 0.00	in

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

Downstream Systems