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Poplar Beach, California

Beach in San Mateo County, California

Air quality

The air at Poplar Beach

Index 47, good, led by fine particles. Read at 10 PM from its reporting area, Redwood City (CA), 12 miles off.

47Good
  • Fine particles (PM2.5)47Good13.1 mi
  • Ozone14Good12 ppb13.1 mi
  • Nitrogen dioxide22Good23.6 ppb13.1 mi
  • Carbon monoxide-0.5 ppm13.1 mi

The days ahead

Good each day through Tue Oct 20, led by ozone. Yesterday measured 40, good.

Smoke, the next 43 hours

Little smoke near the ground through Sat 5 PM: the index from smoke stays at 11 or under.

FriSat

Precipitation

What has fallen at Poplar Beach

None in the last 3 days, to Thu 10 PM. Measured by radar and rain gauges, as water.

Last 24 hours
0.00in
Last 3 days
0.00in

Visibility

How far you can see at Poplar Beach, the next 43 hours

Visibility stays 10 miles or more through Sat 5 PM.

FriSat
Poplar Beach from its sand, nowLooking W from the sand at 11:12 PM, night, clear, waves about 5.5 ft every 10 s.250260W280290Facing W 270°
Looking W from the sand at 11:12 PM, night, clear, waves about 5.5 ft every 10 s.
NESW

Facing W 270°

300 ft

From above: the edge, the break, the view

Surf and swim

The surf zone forecast for San Francisco and San Mateo County Coastal Areas, and the waves at buoy 46012, 24.9 mi away.

Friday

Surf height
4 to 7 feet
Water temperature
61 to 62 °F

Waves at buoy 46012, Half Moon Bay

Wave height
3.0 ft
Period
10 s
From
-
Water
60 °F
Read
Thu 10:00 PM
Distance
24.9 mi

Wave height is the significant height: the mean of the highest third of the waves. The period is the time between the waves carrying the most energy.

Wave height at buoy 46012, last 48 hoursSignificant wave height from 3.0 ft to 4.3 ft; 3.0 ft at Thu 10:00 PM. Arrows show the way the waves travel.0 ft2 ft4 ft6 ft6 AMNoon6 PMThu6 AMNoon6 PM3.0 ftWave height at buoy 46012, last 48 hoursSignificant wave height from 3.0 ft to 4.3 ft; 3.0 ft at Thu 10:00 PM. Arrows show the way the waves travel.0 ft2 ft4 ft6 ftNoonThuNoon3.0 ft
Significant wave height from 3.0 ft to 4.3 ft; 3.0 ft at Thu 10:00 PM. Arrows show the way the waves travel.
Every hour, last 24 hours
TimeWave heightPeriodFrom
Thu 10:00 PM3.0 ft10 s-
Thu 9:00 PM3.3 ft14 s-
Thu 8:00 PM3.3 ft12 s-
Thu 7:00 PM3.3 ft11 s-
Thu 6:00 PM3.3 ft10 s-
Thu 5:00 PM3.0 ft13 s-
Thu 4:00 PM3.0 ft13 s-
Thu 3:00 PM3.3 ft13 s-
Thu 2:00 PM3.3 ft12 s-
Thu 1:00 PM3.3 ft14 s-
Thu 12:00 PM3.6 ft14 s-
Thu 11:00 AM3.3 ft14 s-
Thu 10:00 AM3.6 ft14 s-
Thu 9:00 AM3.6 ft14 s-
Thu 8:00 AM3.6 ft15 s-
Thu 7:00 AM3.3 ft14 s-
Thu 6:00 AM3.3 ft15 s-
Thu 5:00 AM3.9 ft13 s-
Thu 4:00 AM3.3 ft14 s-
Thu 3:00 AM3.6 ft14 s-
Thu 2:00 AM3.9 ft15 s-
Thu 1:00 AM3.6 ft15 s-
Thu 12:00 AM3.6 ft15 s-
Wed 11:00 PM3.6 ft14 s-

Surf zone forecast

San Francisco and San Mateo County Coastal Areas. Issued 8:55 PM PDT Thu Oct 15.

ForecastFridaySaturday
Surf height4 to 7 feet4 to 7 feet
Water temperature61 to 62 °F-
Thunderstorm potentialNone expectedNone expected
WeatherMostly sunnyPartly cloudy
High temperature63-9460-89
WindNW at 4 mphNW at 5 mph becoming NW at 8 mph
TidesHigh 4.2 ft, 5:32 AMLow 3.6 ft, 9:28 AMHigh 5.2 ft, 3:11 PMLow 0.5 ft, 10:32 PMHigh 4.2 ft, 6:48 AMLow 3.7 ft, 10:56 AMHigh 4.9 ft, 4:10 PMLow 0.6 ft, 11:38 PM

Tide

TideHigh 4.2 ft at Fri 5:32 AM, Low 3.6 ft at Fri 9:28 AM, High 5.2 ft at Fri 3:11 PM, Low 0.5 ft at Fri 10:32 PM, High 4.2 ft at Sat 6:48 AM, Low 3.7 ft at Sat 10:56 AM, High 4.9 ft at Sat 4:10 PM, Low 0.6 ft at Sat 11:38 PM. Heights in feet above mean lower low water.0 ft2 ft4 ft6 ft8 ft6 AMNoon6 PMSat6 AMNoon6 PMSun4.2 ft5:32 AM3.6 ft9:28 AM5.2 ft3:11 PM0.5 ft10:32 PM4.2 ft6:48 AM3.7 ft10:56 AM4.9 ft4:10 PM0.6 ft11:38 PMTideHigh 4.2 ft at Fri 5:32 AM, Low 3.6 ft at Fri 9:28 AM, High 5.2 ft at Fri 3:11 PM, Low 0.5 ft at Fri 10:32 PM, High 4.2 ft at Sat 6:48 AM, Low 3.7 ft at Sat 10:56 AM. Heights in feet above mean lower low water.0 ft2 ft4 ft6 ft8 ftNoonSat4.2 ft5:32 AM3.6 ft9:28 AM5.2 ft3:11 PM0.5 ft10:32 PM4.2 ft6:48 AM3.7 ft10:56 AM
Tide. High 4.2 ft at Fri 5:32 AM, Low 3.6 ft at Fri 9:28 AM, High 5.2 ft at Fri 3:11 PM, Low 0.5 ft at Fri 10:32 PM, High 4.2 ft at Sat 6:48 AM, Low 3.7 ft at Sat 10:56 AM, High 4.9 ft at Sat 4:10 PM, Low 0.6 ft at Sat 11:38 PM. Heights in feet above mean lower low water.

Beach

County
San Mateo County
State
California
Latitude
37.4552° N
Longitude
122.4446° W

What is measuring near here

The 5 instruments nearest Poplar Beach, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 0.3 miles away.

measured now3 instruments

Citizen station GW4019GW4019

In a volunteer observer's own ground/0.4 mi away/67 ft/- ft from here

temp, humidity, wind, precip, pressure

Half Moon BayHAF

At an airfield/5.0 mi away/31 ft/- ft from here

temp, wind, gust, visibility, precip, pressure

Spring Vly RAWSHSPC1

A remote fire weather station/7.4 mi away/1,030 ft/- ft from here

temp, wind, gust, humidity, pressure

measured daily2 instruments

Half Moon Bay 1.0 SCA-SM-19

In a volunteer observer's own ground/0.3 mi away/65 ft/- ft from here

precip, snowfall, snow depth

Half Moon BayHMBC1

At a cooperative observer's station/1.2 mi away/23 ft/- ft from here

snowfall, snow depth, precip, high, low

-

Snow on the ground

Elsewhere in California

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