Current Conditions
Here you'll find the latest readings from most of the Wired Pier sensors at Piers 15 and 17 in San Francisco. Most of the sensors update every five minutes (when they're working correctly), others only once per hour.
Together, the data paints a picture of the current state of the water and the atmosphere, and their dynamic patterns, cycles, and trends. Many water measurements fluctuate in response to the tides, while some air quality measurements are affected by heavy car and truck traffic on nearby streets.
Weather
| Exploratorium Weather Station (Western Weather) | |
|---|---|
| Temperature: | 55.1 °F | 12.8 °C |
| Relative humidity: | 81.5 % |
| Dew point: | 49.5 °F | 9.7 °C |
| Air pressure: | 29.91 in Hg | 1013 millibars |
| Wind speed: | 13 mph 5.8 m/sec |
| Wind direction: | NW 273 degrees |
| Rain: | 0.2 inches |
| Sensor location: | Pier 15, Bay Observatory, roof |
| Last update: | 2019-05-21T16:42:00Z |
Bay Observatory Roofcam
Latest image of the view looking toward the Bay Bridge.
Air Quality
| Air Quality Sensor (BEACON) (street side) | |
|---|---|
| Air pressure: | 1014 millibars |
| Ozone (O3): | -999 volts * |
| Carbon monoxide (CO): | -999 volts * |
| Carbon dioxide (CO2): | 438.9 parts per million |
| Nitric oxide (NO): | 0.35 volts * |
| Nitrogen dioxide (NO2): | -999 volts * |
| Particulate: | 0.7 % |
| Sensor location: | Pier 15, Roof, near street |
| Last update: | 2019-05-21T16:40:00Z |
| Sensor and data courtesy of UC Berkeley Atmospheric CO2 Observation Network (BEACON) | |
| Air Quality Sensor (BEACON) (Bay side) | |
|---|---|
| Air pressure: | 1013 millibars |
| Ozone (O3): | -999 volts * |
| Carbon monoxide (CO): | -999 volts * |
| Carbon dioxide (CO2): | 473 parts per million |
| Nitric oxide (NO): | 0.31 volts * |
| Nitrogen dioxide (NO2): | -999 volts * |
| Particulate: | 1.6 % |
| Sensor location: | Pier 15, Bay Observatory, roof |
| Last update: | 2019-05-21T16:40:00Z |
| Sensor and data courtesy of UC Berkeley Atmospheric CO2 Observation Network (BEACON) | |
| Carbon Dioxide Buoy | |
|---|---|
| Atmospheric carbon dioxide (CO2): | 420 parts per million |
| Atmospheric pressure: | 1011 millibars |
| Sensor location: | Floating in Bay between Piers 15 and 17 |
| Last update: | 2019-05-20T18:17:00Z |
| Sensor and data courtesy of NOAA Pacific Marine Environmental Laboratory | |
*Relative values, not calibrated, not comparable to measurements in ppm.
Water Conditions
| Bay Water Probe (SeaBird) (near surface) | |
|---|---|
| Temperature: | 49.2 °F | 15.4 °C |
| Pressure: | 0.6 DeciBar |
| Dissolved oxygen (O2): | 2.65 mL/L |
| Salinity: | 27 PSU |
| Sensor location: | Bay, between Piers 15 and 17 |
| Last update: | 2019-05-21T16:42:00Z |
| Carbon Dioxide Buoy | |
|---|---|
| Dissolved carbon dioxide (CO2): | 567.1 parts per thousand |
| Surface salinity: | 9.3 PSU |
| Sensor location: | Floating in Bay between Piers 15 and 17 |
| Last update: | 2019-05-20T18:17:00Z |
| Sensor and data courtesy of NOAA Pacific Marine Environmental Laboratory | |
| Bay Water Probe (Turner C6P) (near surface) | |
|---|---|
| Colored dissolved organic matter: | 0 RFU |
| Turbidity: | 0 RFU |
| Freshwater cyanobacteria (phycoerythrin): | 253.5 RFU |
| Marine cyanobacteria (phycocyanin): | 322.9 RFU |
| Refined oil: | 8.2 RFU |
| Crude oil: | 0 RFU |
| Tidal water depth: | 4.92 feet | 1.5 meters |
| Water temperature: | 59 °F | 15 °C |
| Sensor location: | Bay, between Piers 15 and 17 |
| Last update: | 2019-05-17T21:48:00Z |
| USGS Bay Water Probe (bottom) | |
|---|---|
| Water temperature: | 48.8 °F | 15 °C |
| Salinity: | 26 PSU |
| Tidal water depth: | 23.3 feet | 7.1 meters |
| Turbidity: | 46.2 FNU |
| Dissolved oxygen (O2): | 92 % |
| Sensor location: | Northeast corner of Pier 17, bottom of the Bay |
| Last update: | 2019-05-17T21:00:00Z |
| Sensor and data courtesy of US Geological Survey | |
Latest San Francisco Bay surface currents
Data Explorer
The Data Explorer lets you examine our environmental data archive. Compare different types of measurements—such as rainfall, water temperature, or carbon dioxide—and see what you can discover.
If you'd like to access our detailed datasets and download raw data, please visit our ERDDAP server.
