Air Quality Index (AQI) Forecast

Air Quality observation data from AirNow.gov is available for the contiguous United States at approximately 8 km resolution. This data is based on the most current air quality observations and is archived in the DataCloud for 12 hours.

Usage:

datatype=aqifcst 
var=PrimaryPollutant,Ozone,ReportingArea,Discussion,ReportingState,PM2.5 
NOTE: You may request one variable at a time, or as many as you wish. The following example request asks for all available AQI Forecast variables, separated by commas.

Example AQI forecast format data request:

http://datacloud.wxc.com/?vs=1.0&passkey=123456789&type=point&datatype=aqifcst&time=now&var=
discussion,ozone,pm2.5,reportingarea,reportingstate,primarypollutant&lat=31.31&lon=-92.44

Example AQI forecast data response:

AQIFCST RETURN VALUES

Attribution
This is the element that contains information regarding data providers.

Notice
This element contains a statement indicating the data may be from a third party source, other than Weather Central.

Example:

<Notice> The data contained herein may contain data, in whole or in part, from the following provider(s). </Notice>

Providers
This is the element that contains information about the data provider(s) for this particular datatype.

Provider
This is the element that contains the listing of data providers for this particular datatype.

name
This is an attribute of the Provider element that lists the name of the third party data provider.

Example:

name=”U.S. Environmental Protection Agency”

PrimaryPollutant
This element contains the name of the primary pollutant for the time and location requested. 

Example:

<PrimaryPollutant>PM2.5</PrimaryPollutant>

unit
This is an attribute of the PrimaryPollutant element, which is left blank since the AQI variables are unitless.

Example:

Unit=” ”

OZONE
This element contains the ground-level Ozone Index forecast for the time and location requested. 

Example:

<OZONE>19</OZONE>

unit
This is an attribute of the OZONE element, which is left blank since the AQI variables are unitless.

Example:

Unit=” ”

category
This is an attribute of the OZONE element which assigns a qualitative description to the amount of ozone forecasted.  For more information on these descriptions see the Unit Explanations page.

Example:

Category=”Good”

ReportingArea
This element contains information about the nearest reporting site.

Example:

<ReportingArea>Monroe</ReportingArea>

lat/lon
These parameters are attributes of the ReportingArea element, used to specify the latitude and longitude the nearest reporting station. They are in decimal format. West and South are defined as negative.

Example:

lat=35.3424&lon=-95.35332

Discussion
This element contains a detailed summary of the air quality forecast for the region you’ve requested.

Example:

<Discussion>Today, as surface high pressure moves across Louisiana… </Discussion>

ReportingState
This element contains the state abbreviation for the requested point. 

Example:

<ReportingState>LA</ReportingState>

PM2.5
This element contains the PM2.5 Index forecast for the time and location requested.  PM2.5 stands for particulate matter that measures 2.5 μm or less.

Example:

<PM2.5>29</PM2.5>

unit
This is an attribute of the PM2.5 element, which is left blank since the AQI variables are unitless.

Example:

Unit=” ”

category
This is an attribute of the OZONE element which assigns a qualitative description to the amount of ozone forecasted.  For more information on these descriptions see the Unit Explanations page.

Example:

Category=”Good”