About the timeliness of AQS Data

EPA’s AQS Datamart API, the service that RAQSAPI retrieves data from, does not host real time (collected now/today) data. If real time data is needed, please use the AirNow API and direct all questions toward real time data there. RAQSAPI does not work with AirNow and cannot retrieve real time data. For more details see section 7.1 of the About AQS Data page¹.