Crate aqi 

aqi

The aqi crate provides functions for calculating the Air Quality Index based on concentrations of particuate matter.

The AQI is defined for ozone (O₃), 1.0-2.5 micron particulate matter (PM2.5), 2.5-10 micron particulate matter (PM10), carbon monoxide (CO), sulfur dioxide (SO₂), and nitrogen dioxide (NO₂).

The AQI helps make air quality more understandable to laypersons, normalizing air quality on a scale from 0 to 500, with round-number ranges that indicate qualities such as “Good”, “Unhealthy”, and “Hazardous”.

For further information, see AQI basics and AQI techinical assistance.

Additionally, this library supports “adjusted” PM2.5 AQI values, using the LRAPA, EPA and AQandU conversion formulas.

Structs

AirQuality

Calucated AQI and human-readable level

Enums

AirQualityError

Error type for air quality calculations

AirQualityLevel

Represents the human-friendly interpretation of the AQI

Functions

co

Calculates the carbon monoxide Air Quality Index from the provided 8-hour concentration

no2

Calculates the nitrogen dioxide Air Quality Index from the provided 1-hour concentration

ozone1

Calculates the ozone Air Quality Index from the provided 1-hour concentration

ozone8

Calculates the Ozone Air Quality Index from the provided 8-hour concentration

pm2_5

Calculates the PM2.5 Air Quality Index from the provided 24-hour concentration

pm2_5_aqandu

Calcuates the AQandU-adjusted PM2.5 Air Quality Index for the provided 24-hour concentration

pm2_5_epa

Calcuates the EPA-adjusted PM2.5 Air Quality Index for the provided 24-hour concentration

pm2_5_lrapa

Calcuates the LRAPA-adjusted PM2.5 Air Quality Index for the provided 24-hour concentration

pm10

Calculates the PM10 Air Quality Index from the provided 24-hour concentration

so2_1

Calculates the sulfur dioxide Air Quality Index from the provided 1-hour concentration

so2_24

Calculates the sulfur dioxide Air Quality Index from the provided 24-hour concentration

Type Aliases

Result

Result type for air quality calculations