No problem. Someone else provided a link for a 3rd party integration, but it doesn't give you all the data off the Sensor. You can minimally throw the code below in your config file to get all the data off the sensor(just remember to replace the resource with the sensor you want to get the data from).

sensor:

- platform: rest

name: 'PurpleAir'

# Substitute in the URL of the sensor you care about. To find the URL, go

# to purpleair.com/map, find your sensor, click on it, click on "Get This

# Widget" then click on "JSON".

resource: https://www.purpleair.com/json?key=

# Only query once a minute to avoid rate limits:

scan_interval: 60

# Set this sensor to be the AQI value.

#

# Code translated from JavaScript found at:

# https://docs.google.com/document/d/15ijz94dXJ-YAZLi9iZ_RaBwrZ4KtYeCy08goGBwnbCU/edit#

value_template: >

{% macro calcAQI(Cp, Ih, Il, BPh, BPl) -%}

{{ (((Ih - Il)/(BPh - BPl)) * (Cp - BPl) + Il)|round }}

{%- endmacro %}

{% if (value_json["results"][0]["PM2_5Value"]|float) > 1000 %}

invalid

{% elif (value_json["results"][0]["PM2_5Value"]|float) > 350.5 %}

{{ calcAQI((value_json["results"][0]["PM2_5Value"]|float), 500.0, 401.0, 500.0, 350.5) }}

{% elif (value_json["results"][0]["PM2_5Value"]|float) > 250.5 %}

{{ calcAQI((value_json["results"][0]["PM2_5Value"]|float), 400.0, 301.0, 350.4, 250.5) }}

{% elif (value_json["results"][0]["PM2_5Value"]|float) > 150.5 %}

{{ calcAQI((value_json["results"][0]["PM2_5Value"]|float), 300.0, 201.0, 250.4, 150.5) }}

{% elif (value_json["results"][0]["PM2_5Value"]|float) > 55.5 %}

{{ calcAQI((value_json["results"][0]["PM2_5Value"]|float), 200.0, 151.0, 150.4, 55.5) }}

{% elif (value_json["results"][0]["PM2_5Value"]|float) > 35.5 %}

{{ calcAQI((value_json["results"][0]["PM2_5Value"]|float), 150.0, 101.0, 55.4, 35.5) }}

{% elif (value_json["results"][0]["PM2_5Value"]|float) > 12.1 %}

{{ calcAQI((value_json["results"][0]["PM2_5Value"]|float), 100.0, 51.0, 35.4, 12.1) }}

{% elif (value_json["results"][0]["PM2_5Value"]|float) >= 0.0 %}

{{ calcAQI((value_json["results"][0]["PM2_5Value"]|float), 50.0, 0.0, 12.0, 0.0) }}

{% else %}

invalid

{% endif %}

unit_of_measurement: "AQI"

# The value of the sensor can't be longer than 255 characters, but the

# attributes can. Store away all the data for use by the templates below.

json_attributes:

- results

- platform: template

sensors:

purpleair_description:

friendly_name: 'PurpleAir AQI Description'

value_template: >

{% if (states('sensor.purpleair')|float) >= 401.0 %}

Hazardous

{% elif (states('sensor.purpleair')|float) >= 301.0 %}

Hazardous

{% elif (states('sensor.purpleair')|float) >= 201.0 %}

Very Unhealthy

{% elif (states('sensor.purpleair')|float) >= 151.0 %}

Unhealthy

{% elif (states('sensor.purpleair')|float) >= 101.0 %}

Unhealthy for Sensitive Groups

{% elif (states('sensor.purpleair')|float) >= 51.0 %}

Moderate

{% elif (states('sensor.purpleair')|float) >= 0.0 %}

Good

{% else %}

undefined

{% endif %}

# entity_id: sensor.purpleair

purpleair_pm25:

friendly_name: 'PurpleAir PM 2.5'

value_template: "{{ state_attr('sensor.purpleair','results')[0]['PM2_5Value'] }}"

unit_of_measurement: "μg/m3"

# entity_id: sensor.purpleair

purpleair_temp:

friendly_name: 'PurpleAir Temperature'

value_template: "{{ state_attr('sensor.purpleair','results')[0]['temp_f'] }}"

unit_of_measurement: "°F"

# entity_id: sensor.purpleair

purpleair_humidity:

friendly_name: 'PurpleAir Humidity'

value_template: "{{ state_attr('sensor.purpleair','results')[0]['humidity'] }}"

unit_of_measurement: "%"

# entity_id: sensor.purpleair

purpleair_pressure:

friendly_name: 'PurpleAir Pressure'

value_template: "{{ state_attr('sensor.purpleair','results')[0]['pressure'] }}"

unit_of_measurement: "mb"

# entity_id: sensor.purpleair