Turn on weather
Open Settings → Weather & Moon and enable weather in day headers. Choose Apple Weather or The Weather Company where available, then select automatic location or search for a fixed place.
Choose the temperature scale and icon style. Conditions and high and low temperatures appear beside the calendar date; turn the feature off to remove them entirely.
In Month view on Mac, the day’s high and low sit beside the date whenever the column is wide enough — roughly 104 pt, or a little more when a moon phase is showing too. A narrower column keeps the condition glyph and drops the temperatures first; narrower still, the weather moves to its own line at the top of the cell.
Location permission is needed only when using the device’s current location. A fixed city works without continuous location access.
When you travel
A forecast for your current location follows the device. Once you are 10 km or more from where the forecast was fetched, InstaCal fetches it again rather than holding an hour-old forecast for a city you have left, and your widgets pick up the new place without the panel being opened. On iPhone and iPad the background refresh updates the forecast too, using the last position it already has, so it works under a While Using permission. A fixed city is left alone — this applies only while weather is set to follow the device.
Changing time zone takes effect at once. Today, the agenda and your widgets re-read in the new zone, including all-day events and where midnight falls, instead of waiting for the next refresh.
Show moon phases
In the same settings area, turn on Moon and choose the graphic style. InstaCal calculates the principal phase for the day and places it with the date information where the current view has room.
Add a second time zone
Open Settings → General → Date & Time on Mac, or Settings → Date & Time (in the General group) on iPhone and iPad. Enable the second time zone and choose a city or zone.
Event details show the corresponding local time and abbreviation. When both zones fall on the same date, the secondary display stays compact; it adds the date when the conversion crosses into another day.
Tip: The second zone is for reading the same event in another place. Choose an event-specific time zone in the editor when the event itself must remain anchored to that zone.
