weird (version 3.1.0)

fetch_air_quality: Air quality data for 12 Beijing monitoring stations from 2013 to 2017

Description

Hourly air quality measurements from 12 monitoring stations across Beijing, China, from 1 March 2013 to 28 February 2017. The data are downloaded and returned.

Usage

fetch_air_quality()

Value

Data frame

Format

A data frame with 420,768 rows and 17 columns:

station

Name of the monitoring station

year

Year of measurement

month

Month of measurement

day

Day of measurement

hour

Hour of measurement (0--23)

pm2_5

Particulate matter with diameter less than 2.5 micrometers (micrograms per cubic meter)

pm10

Particulate matter with diameter less than 10 micrometers (micrograms per cubic meter)

so2

Sulfur dioxide concentration (micrograms per cubic meter)

no2

Nitrogen dioxide concentration (micrograms per cubic meter)

co

Carbon monoxide concentration (micrograms per cubic meter)

o3

Ozone concentration (micrograms per cubic meter)

temperature

Temperature (degrees Celsius)

pressure

Atmospheric pressure (hPa)

dew_point

Dew point temperature (degrees Celsius)

rainfall

Rainfall (millimeters)

wind_direction

Wind direction

wind_speed

Wind speed (meters per second)

References

Hyndman, R J (2026) That's weird: Anomaly detection using R, https://OTexts.com/weird/.

Examples

if (FALSE) {
air_quality <- fetch_air_quality()
air_quality |>
  filter(station == "Aotizhongxin") |>
  ggplot(aes(x = temperature, y = pm2_5)) +
  geom_point(alpha = 0.1)
}