The measurement tabs

Beside the Overview, your site has one tab per kind of reading your station reports. Each opens on the current value, the day's high and low, and a chart with a range switcher (24 hours to a year, as your archive allows). This page lists what each tab adds beyond that, including the values Pro Weather derives from what the station measured.

A tab appears only when the station reports the reading behind it. A station without a solar sensor has no Sun tab, and nothing is invented to fill the gap.

Temperature

Always present when the station reports an outdoor temperature. Alongside the current reading, the day's high and low and the average:

• A trend: an arrow with "rising", "falling" or "steady", graded to "rapidly" or "slowly" at the ends, and the change over the last hour. It shares its bands with the barometer's trend so the two never disagree about what "rapidly" means.
• The feels-like family, each with a one-line explanation on the page: dew point, heat index, wind chill, humidex, apparent temperature, and wet-bulb temperature.
• Cloud base: the estimated height at which clouds form, from the spread between temperature and dew point.
• WBGT (shade): the wet bulb globe temperature that heat-stress guidance is written against, shown only once heat stress is a real question. See Heat stress for what the shade approximation leaves out.

Every derived value follows a calibration correction to the readings it comes from.

Humidity

Relative humidity with its high, low and average, and the dew point beside it. Growers who would rather have vapour pressure deficit find it on the Garden & agriculture tab.

Wind

Average wind, gust, direction, the day's peak gust and the wind run (the distance the air travelled past the station today). Two optional widgets sit with it:

• A live compass showing the current bearing, its arrow coloured by Beaufort force.
• The wind rose: which directions the wind came from over the last 30 days, coloured by strength, in 8 or 16 points.

Both are toggled under Panels → Wind & sky detail.

Pressure

Sea-level pressure with high, low and average, and the three-hour trend as an arrow and a word. Two further readings appear when the station supplies what they need:

• Station pressure: the raw reading at the station's own altitude, for anyone comparing against a local barometer.
• Altimeter setting: station pressure adjusted the way aircraft altimeters are calibrated, so it can be compared across altitudes. It needs the station's elevation and works over the whole archive, since it is calculated rather than stored.

The barometer also drives the station forecast on the Forecast tab.

Rain

Rain today, the last hour, the last 24 hours, this month and this year, plus the current rate and the day's peak rate. When the console tracks a storm, the storm total appears with the date the storm began. Daily totals roll over at your weather day, midnight unless you set otherwise.

Sun

Solar radiation and UV index with their highs and averages, the solar energy received today (in megajoules per square metre) and today's UV dose (in minimal erythema doses, the amount that begins to redden skin). Below them, sunshine hours for today and yesterday with the share of possible daylight they represent, derived from the solar readings without a sunshine sensor.

Sensors

The accessory channels that pushed hardware and vendor-cloud connections deliver, each with a seven-day trend where there is something to trend:

• Room sensors: up to 16 extra temperature and humidity channels, each with its own dew point.
• Probes: up to eight single-temperature probes.
• Lightning: strikes today, the time and distance of the last strike, and strikes per day over the week.
• Leak detectors: wet or dry per channel, with when it last went wet.

Soil moisture, soil temperature, soil conductivity and leaf wetness live on the Garden & agriculture tab instead. The Sensors tab hides itself when the station reports none of the above, so leaving it on costs a Davis-only site nothing.

Air quality, and the rest

Particulates have a tab of their own, described under Air quality. The tabs that are not about a measurement, such as the forecast, the almanac and the sky, each have their own page in this section.

Next steps

• Tabs & panels: choosing and ordering the tabs
• Chart builder: a visitor's own chart from any of these series
• Sensor calibration