East Sharp Park Pacifica — About This Weather Station

Overview

Weather Station Photo
East Sharp Park weather station

This weather station is privately owned and operated and is located in the East Sharp Park neighborhood of the city of Pacifica, CA. This station should not be considered an officially recognized station for weather reporting.

In particular, the anemometer is mounted at 12 ft (3.7 m) above ground, well below the 10 m (33 ft) height used by official weather stations, and sits near trees that further disturb airflow around it. As a result, wind speed and gusts reported here typically run lower, and can be more erratic, than readings from an open, standard-height site. The rain gauge is likewise mounted higher than the roughly 2 ft (0.6 m) height recommended to minimize wind-induced undercatch, so its totals may run somewhat lower than an official gauge during windy storms.

Equipment

Location & Siting

Latitude, Longitude: 37.634, −122.485
Elevation: 265 ft (80.8 m)
Anemometer Height: 12 ft (3.7 m) above ground

External Networks

Data Notes

Tide Predictions

Tide predictions shown on this site come from NOAA's official tide gauge in San Francisco (station 9414290), the nearest NOAA reference station to Pacifica. Heights are reported relative to Mean Tide Level (MTL), the midpoint between the average high and average low tide at that station. MTL is calculated from a fixed 19-year averaging period, currently 1983 to 2001. Because sea levels have risen since that period, the tide heights predicted here run somewhat lower than today's actual water levels would suggest.

Sun & Moon Calculations

Sunrise, sunset, moonrise, moonset, and moon phase come from the U.S. Naval Observatory's astronomical data for this location. The sun's position, its azimuth (compass direction) and elevation (angle above the horizon), along with local solar noon, are calculated from this station's latitude and longitude using standard solar geometry. Local solar noon, the moment the sun is highest in the sky, rarely lines up with clock noon. It is offset by this location's position within the Pacific time zone and by seasonal variations.

Air Quality (PM2.5/AQI)

Air quality here comes from a PurpleAir sensor with two independent PM2.5 channels (A and B). PurpleAir's raw readings are known to be somewhat inaccurate when measuring the air quality effects from wildfire smoke and this site applies a peer-reviewed correction formula to obtain the EPA-corrected AQI that more accurately represents wildfire impacts on air quality. Full sensor detail, additional averaging periods, and the AQI color scale are available on the dedicated air quality page.

Climate History Records

⚠ Short record disclaimer: Climatological averages and extremes on the Climate History page are based on data from August 4, 2020 to present. Data from August 2020 through October 2021 originated from an Ambient Weather WS-2000 station and data from August 2020 through December 2021 were sourced via the Synoptic/MesoWest network (station F8022) and have lower resolution than the direct Davis Vantage Pro2+ records beginning January 1, 2022. Due to differences in equipment, sensor height, and data acquisition between the two stations, pre-November 2021 data may not be directly comparable to later records. With only a few years of record, these statistics may not reflect true long-term climatological norms and should be interpreted with caution.

Contact

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