Wired Pier - Current Conditions | Exploratorium Environmental Field Station
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.