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General
This is an amateur weather station mounted on a balcony.
The weather station works on a Raspberry Pi Zero W microcomputer.
A DS18B20 sensor was used to measure the temperature.
The temperature is given to one decimal place.
The unit of temperature is degrees celsius [°C].
A BME280 sensor was used to measure humidity.
Humidity is given as an integer.
The unit of humidity is percent [%].
A BME280 sensor was used to measure the pressure.
The pressure is given as an integer.
The unit of pressure is the hectopascal [hPa].
The dew point is calculated from the formula:
where:
Source of formula: Wikipedia
The dew point is given to one decimal place.
The unit of dew point is degrees celsius [°C].
PM 1.0 (up to 1 μm diameter), PM 2.5 (up to 2.5 μm diameter) and PM 10 (up to 10 μm diameter) are measured.
The PMS5003 sensor was used to measure particulate matter.
Particulate matter is given as an integer.
The unit of particulate matter is micrograms per cubic meter [
The standard for PM 10 is 180
The air quality index is calculated from the formula:
where:
The index has five levels:
Index | Compartment |
---|---|
Very good | |
Good | |
Medium | |
Bad | |
Very bad |
The index is given as an integer.
The unit of AQI is percent [%].
Archive readings are given every hour.
Their value is the average of readings saved every 10 minutes.