Wetter Script

Wetter, 15-Stunden-Prognose und Mondphase

Specifications
System	AWTRIX NG Scripts
Firmware	AWTRIX NG
Topic	Miscellaneous
Built by	Hank_the_Tank
File	fGEhP0cZZd6E.ax · 4.4 KB
Icons	22
Published	31 Jul 2026 · updated 31 Jul 2026

Install on my AWTRIX… Download flow Download icons (22)

Weather 3.0 for AWTRIX NG

A compact and memory-optimized weather app for AWTRIX NG. The script displays the current outdoor temperature, current weather conditions, a color-coded 15-hour temperature forecast, and the current moon phase on a 32×8 pixel matrix.

Weather data is provided by Open-Meteo. No user account or API key is required.

Display layout

The display is divided into four areas:

left: icon for the current weather conditions
center: current temperature rounded to a whole degree
right: icon for the current moon phase
below the temperature: 15 colored pixels showing the temperature trend for the next 15 hours

Each forecast pixel represents approximately one hour. Its color indicates the expected temperature range:

Purple and dark blue: very cold
Light blue: cool
Green: mild
Yellow: warm
Orange and red: hot

The current temperature is also shown in a color matching its value.

Features

current outdoor temperature
current conditions based on the WMO weather code
15-hour temperature forecast
automatically calculated moon phase
weather updates approximately every five minutes
manual refresh using the middle button
storage of the last known temperature label, color, and weather icon
immediate display of the last known values after a restart
red status pixel for previously loaded weather data that has become outdated
no API key required
particularly low RAM usage

Memory optimization

The script has been optimized specifically for the limited memory available on AWTRIX NG devices.

Instead of loading the complete Open-Meteo response and converting it into a large JSON object tree, it keeps only a small response window of up to 640 bytes. The required values are then extracted using regular expressions.

This significantly reduces memory usage and allows the script to run more reliably alongside other scripts, particularly on devices without PSRAM.

Updates and data age

Weather data is requested from Open-Meteo approximately every five minutes.

After a successful request, the data-age counter is reset. If the last successfully loaded data is more than approximately 20 minutes old, a red pixel appears in the bottom-right corner.

The red pixel indicates that the displayed values may no longer be current. In this case, check the Wi-Fi connection, internet access, and the AWTRIX device log.

Note: If no weather data has ever been loaded or stored successfully, the script only displays .... The red pixel is not drawn in this initial state. It appears only when existing weather data later becomes outdated.

Controls

Pressing the middle button on the AWTRIX NG immediately requests fresh weather data.

The app otherwise uses the global app duration and rotation settings configured on the AWTRIX NG.

Changing the location

Before sharing or installing the script, the coordinates should be changed to the user's location.

The relevant line is located in the section marked Standort hier setzen:

"?latitude=52.52&longitude=13.40"

latitude is the geographic latitude.
longitude is the geographic longitude.

The included values 52.52, 13.40 point to the Berlin area in Germany. Other users must replace them with their own coordinates.

Coordinates can be found using OpenStreetMap or another mapping service.

Required weather icons

The following icon IDs are used for the current weather conditions:

53386 – clear sky
2286 – partly cloudy
53384 – overcast
17055 – fog
2720 – rain or drizzle
2289 – snow
49300 – rain showers
29839 – thunderstorm
36637 – unknown or unmapped weather condition

If the selected weather icon is unavailable, the script draws a small yellow sun as a fallback.

Required moon-phase icons

The following icon IDs are used for the moon phases:

2318
2319
2320
2321
2314
2315
2316
2317

These icons must be stored on the AWTRIX NG before the script is used. There is currently no drawn fallback for a missing moon-phase icon.

After saving, the script automatically requests its first weather data. Until the first successful request completes, the display shows ....

Requirements

AWTRIX NG with scripting enabled
working Wi-Fi and internet connection
access to https://api.open-meteo.com
required weather and moon-phase icons stored on the device
tested with AWTRIX NG firmware 1.0.9-dev

Privacy

The script sends only the configured geographic coordinates to Open-Meteo.

It requires:

no user account
no API key
no personal credentials
no Home Assistant or MQTT connection

The HTTPS connection is encrypted. As is standard for AWTRIX NG scripts, the firmware does not verify the remote certificate.

Troubleshooting

The display only shows `...`

The AWTRIX NG has not yet received valid weather data. Check the following:

Is the device connected to Wi-Fi?
Does it have internet access?
Is api.open-meteo.com reachable?
Are the configured coordinates valid?
Is the script included in the app rotation?

A red pixel appears in the bottom-right corner

The last successfully loaded weather data is more than approximately 20 minutes old. The rest of the display continues to show the last known values.

The weather icon is missing

Check whether the required icon ID is stored on the AWTRIX NG. If a weather icon is missing, the script should draw a small yellow sun as a fallback.

The moon phase is missing

The corresponding moon-phase icon is probably not stored on the device.

The display shows `ERR:Weather` or `ERR:Wetter`

The script encountered a syntax or runtime error. The full error message is shown next to the script in the web interface and in the device log.

Credits

Weather data: Open-Meteo
Firmware and scripting system: Blueforcer / AWTRIX NG
Weather app: Hank_the_Tank / Codex
Memory optimization: with support from the AWTRIX NG developer

fGEhP0cZZd6E.ax

# @name Wetter
# @desc Wetter, 15-Stunden-Prognose und Mondphase
# @author Hank_the_Tank / Codex
# @version 3.0

class Weather
  var st, fc, label, tcol, wic, mic, mday, ticks, busy, age

  def init()
    # Farbstufen: Untergrenze, Farbe - dazwischen wird interpoliert
    self.st = [-12, 0xD977DF, -6, 0x9545BC, -1, 0x4B379C, 0, 0xFEC4FF,
               4, 0x31B8DB, 10, 0x31DB8B, 15, 0x6ED228, 21, 0xFFFF28,
               27, 0xF87E27, 32, 0xCF3927, 38, 0xA12527]
    self.fc = []
    self.label = store.get("label")
    self.tcol = store.get("col", 0x666666)
    self.wic = store.get("icon", "")
    self.mic = ""
    self.mday = -1
    self.ticks = 0
    self.busy = false
    self.age = 9999
  end

  def on_body(w, status)
    self.busy = false
    if w == nil return end
    var m = re.search("_2m\":([-0-9.]+)", w)
    var c = re.search("code\":(\\d+)", w)
    var h = re.search("_2m\":\\[([^\\]]*)", w)
    if m == nil || c == nil || h == nil return end
    var t = num(m[1])
    if t == nil return end

    # i == 0 ist die aktuelle Temperatur, danach die Stundenwerte
    var s = self.st
    var vals = re.matchall("[-0-9.]+", h[1])
    var n = size(vals)
    if n > 15 n = 15 end
    var fc = []
    var i = 0
    while i <= n
      var v = i == 0 ? t : num(vals[i - 1])
      var col = s[1]
      if v > s[0]
        var j = 0
        while j < 20 && v >= s[j + 2]
          j += 2
        end
        if j >= 20
          col = s[21]
        else
          var a = s[j + 1]
          var b = s[j + 3]
          var f = (v - s[j]) * 1.0 / (s[j + 2] - s[j])
          col = rgb(int(a / 65536 % 256 + (b / 65536 % 256 - a / 65536 % 256) * f),
                    int(a / 256 % 256 + (b / 256 % 256 - a / 256 % 256) * f),
                    int(a % 256 + (b % 256 - a % 256) * f))
        end
      end
      if i == 0
        self.tcol = col
      else
        fc.push(col)
      end
      i += 1
    end
    self.fc = fc
    self.label = str(int(t + (t >= 0 ? 0.5 : -0.5))) + "°"

    var k = int(num(c[1]))
    var ic = "36637"
    if k == 0     ic = "53386"
    elif k <= 2   ic = "2286"
    elif k == 3   ic = "53384"
    elif k <= 48  ic = "17055"
    elif k <= 67  ic = "2720"
    elif k <= 77  ic = "2289"
    elif k <= 82  ic = "49300"
    elif k <= 86  ic = "2289"
    elif k >= 95  ic = "29839"
    end
    self.wic = ic
    self.age = 0

    store.set("label", self.label)
    store.set("col", self.tcol)
    store.set("icon", ic)
  end

  def loop()
    var d = day()
    if d != self.mday
      self.mday = d
      var mo = month()
      var a = int((14 - mo) / 12)
      var yy = year() + 4800 - a
      var mm = mo + 12 * a - 3
      var f = (d + int((153 * mm + 2) / 5) + 365 * yy + int(yy / 4) -
               int(yy / 100) + int(yy / 400) - 2483595) / 29.53058867
      f -= int(f)
      var ic = "2317"
      if f < 0.03 || f >= 0.97  ic = "2318"
      elif f < 0.22             ic = "2319"
      elif f < 0.28             ic = "2320"
      elif f < 0.48             ic = "2321"
      elif f < 0.52             ic = "2314"
      elif f < 0.72             ic = "2315"
      elif f < 0.78             ic = "2316"
      end
      self.mic = ic
    end

    self.age += 1
    if self.ticks <= 0
      self.ticks = 300
      if !self.busy
        self.busy = true
        http.get("https://api.open-meteo.com/v1/forecast" +
                 # ---- Standort hier setzen ----
                 "?latitude=52.52&longitude=13.40" +
                 # ------------------------------
                 "&current=temperature_2m,weather_code&hourly=temperature_2m" +
                 "&forecast_hours=15&timeformat=unixtime&timezone=auto",
                 / b, st -> self.on_body(b, st),
                 {'find': "\"current\":", 'keep': 640})
      end
    end
    self.ticks -= 1
  end

  def draw()
    clear()
    if self.label == nil
      text(6, 6, "...", 0x666666)
      return
    end
    if !icon(self.wic, 0, 0)
      circle_fill(4, 4, 3, 0xFFCC00)
    end
    text(9 + int((14 - text_ink_width(self.label)) / 2), 6, self.label, self.tcol)
    icon(self.mic, 23, 0)
    var i = 0
    var n = size(self.fc)
    while i < n
      pixel(8 + i, 7, self.fc[i])
      i += 1
    end
    if self.age > 1200
      pixel(width() - 1, height() - 1, 0xFF0000)
    end
  end

  def on_button(btn)
    if btn == "select" self.ticks = 0 end
  end
end

return Weather()

Install it on your AWTRIX NG

Your browser writes the script straight to the device on your network. It joins the app rotation right away.

Device address

The hostname or the IP. Your AWTRIX scrolls its IP at boot.

Save it as

Letters, digits, hyphen and underscore.

Some browsers refuse to talk to a device on your network from a public page. Download the flow and paste it into the Scripts tab of your device, or install it from a terminal:

These icons belong on the device, in /ICONS. Each one is at most 32×8 pixels — shown here magnified, at their real proportions.