ncuaqmd.org

Current Air Quality Maps & AQI

Current AQI Notifications (PSA's, Advisories, Alerts) & Forecasts:

Wildfire Smoke AQI Maps & Forecasts:

EPA AirNow Fire & Smoke Map (the "current" AQI indicated is actually a 24-hour NowCast average)

PM2.5 Sensors Map (PurpleAir) Layer on EPA AirNow Fire & Smoke Map (New in 2020!)

PM2.5 Sensors Map (PurpleAir) website (use LRAPA conversion) Unofficial citizen-science air quality data from low-cost sensors. Although sensors provide shorter-term air quality data, they should not be used for official air quality readings as they have reliability and accuracy limitations. The AQI indicated is not based upon District regulatory monitors (see EPA AirNow above) - note that the "current" AQI on AirNow is actually a 24-hour average NowCast AQI. {Switch the Map Data Layer dialogue box in the lower left hand corner from “None” to “AQ and U” or "LRAPA" to apply a correction factor.] Also check out the the Sensor Data Layer on the newly updated EPA AirNow Fire & Smoke Map which includes PurpleAir sensors (New in 2020!).

"Realtime" AQ Maps & AQI:

PM2.5 Sensors Map (PurpleAir) website (use LRAPA conversion) Unofficial citizen-science air quality data from low-cost sensors. Sensors should not be used for official air quality readings. Although various AQIs are shown, it is not relying upon District monitors (see EPA AirNow above) - note that the "current" AQI on AirNow is actually a 24-hour average NowCast AQI. [Switch the Map Data Layer dialogue box in the lower left hand corner from “None” to “AQ and U” to apply a correction factor.]Check out the EPA Air Sensor Toolbox.