The correction equation does include a relative humidity (RH) factor, which uses RH data as reported by the PurpleAir sensor itself. Some 640 personnel are currently battling the fire. Fires are nothing new to Arizona. Use the map layer icon in the upper righthand corner of the map to turn on information from AirNow monitors, USFS temporary monitors, and sensors.

See more information about the NowCast AQI. Moreover, it also took a tremendous toll on Arizona residents, as nearly 6,000 people needed to evacuate. Four large wildfires were captured by NASA’s Aqua satellite on June 17, 2020 in this image. At this time, only Special Smoke Statements issued by ARAs are provided in the map however further information on smoke impacts can be available at your state, tribal or local air quality agency and the Pilot is assessing how to include such information in the map environment. The sensor data undergoes QA screening, is averaged to hourly values, is corrected for bias, and has the EPA NowCast algorithm applied. The PurpleAir sensors were assessed, because their use has grown exponentially, resulting in an extensive network of publicly reporting sensors worldwide. The Fire and Smoke Map shows fine particulate (2.5 micron, PM 2.5) pollution data obtained from air quality monitors and sensors.Information is shown on both the EPA’s Air Quality Index scale, using the NowCast AQI algorithm, and also as hourly PM 2.5 concentration values. It also is possible that the state, local or tribal agency responsible for air quality in your area is not currently participating in the pilot, meaning sensor data would not show for your area. Weather concerns include, “Maximum temperatures from the upper 70s in the upper elevations to 102 degrees on the valley floor and minimum relative humidity values were between 5 and 8 percent on the valley floor and 9 to 14 percent in the upper elevations.” Earlier red flag warnings were in effect due to 20-foot winds southwest at 15 to 25 mph, with a maximum gust to around 30 mph on the valley floor and 45 mph at Mt. display: none; There is a “learn more” link on each of these for access to more information. These cookies will be stored in your browser only with your consent. This fire began on June 05, 2020, with a lightning strike in the Catalina Mountains of the Coronado National Forest. "Seattle, WA", "Washington", "Smith River, CA"), Or search for conditions near your current location. In June 2019, the state of Arizona had 10 active fires, according to AZCentral.com. Hotspot detections are based on higher than normal temperatures visible to the satellite from a location on the ground. Allow the user to browse current conditions This adjustment will likely not significantly impact the Air Quality Index that would be reported based on the resulting data. Still, even in a calm year, Arizona has seen hundreds of fires that have burned many thousands of acres. Whenever the location of interest is within the area of a Special Smoke Statement, a banner is displayed notifying the user and the Special Smoke Statement section of the Sidebar will also display this information. PHOS-CHEK, PHOS-CHEK WILDFIRE HOME DEFENSE, and Perimeter Solutions are trademarks of Perimeter Solutions, LP or its affiliates. It also began during the thunderstorms on June 6, 2020, with a lightning strike. 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The fire eventually became so large that NASA has a page dedicated to imagery taken from space of the inferno. For more information, visit https:///www.epa.gov/pm. However, 2019’s fires were significantly larger, as reported by InciWeb. No. Despite these uncertainties, EPA and USFS find value in this more spatially resolved and higher time resolved crowdsourced data, especially during localized smoke episodes. The maps may look different for several reasons: As a result, there will always be differences in how sensor data is shown on the two websites. At present, its perimeter is contained. For low-cost sensor data, a correction equation is also applied to mitigate bias in the sensor data.
A lightning strike close to Yarnell started the fire, Arizona. The AQI is EPA’s color-coded tool for communicating air quality to the public. USFS and EPA are showing sensor data as part of a pilot project designed to provide the public with additional information that individuals can use to protect their health, particularly during wildfires. However, this feature is available for the uncorrected data on PurpleAir.com. There are…, One application of PHOS-CHEK WILDFIRE HOME DEFENSE’s clear quick drying formula protects your home and property for months. To effectively utilize the mass amounts of sensor data, EPA developed an equation to correct the sensor data to bring it more in line with data from official monitoring stations. In addition, studies and data analysis show that PurpleAir sensors typically have a high bias and overestimate PM2.5 (particle pollution) concentrations. To see a map that includes ozone and PM10 in addition to PM2.5, please see the AirNow Interactive Map. Air Quality Index (AQI) category.

Users can use both websites to learn more about air quality in their area.