The Emerald Triangle Currently Has Some of the Worst Air Quality in North America

The worst air quality in the nation is in the Emerald Triangle right now. [Screenshot from AirNow]

One of the highest air quality index measurements in the region is Humboldt County’s Hoopa Valley. At 10 p.m. Thursday, Hoopa’s reading was 1246.3 which is considered “Hazardous.” Dodd said Hoopa’s dramatic AQI is attributable to smoke from both the August Complex and Red Salmon Complex fires converging. Dodd explained offshore northwest winds have been unable to reach the Willow Creek and Hoopa regions’ inland valleys contributing to smoke and dangerous air quality. 

One of the highest air quality index measurements in the region is Humboldt County’s Hoopa Valley. At 10 p.m. Thursday, Hoopa’s reading was 1246.3 which is considered “Hazardous.” [Screenshot from AirNow]

The Ukiah Valley currently has an AQI of 382, also considered “Hazardous.” Dodd said the topography of the Ukiah Valley, compared to regions like Hoopa, allows for more smoke to escape because of its size.

Dodd said that coastal regions are generally provided a reprieve from these sorts of air quality conditions. AirNow AQI measurements indicate Humboldt County’s Eureka currently has an AQI of 156, considered “Unhealthy.” Dodd explained the most recent winds and pressures systems have led to wildfire smoked “mixing with the marine layer.” 

Mendocino County’s coastline seems to be doing better in terms of AQI with Fort Bragg measuring at 52, considered “Moderate.”

Dodd said increased winds would help to clear the skies but warned, “[a]n increase in winds without also an increase in moisture will result in more fire activity and smoke production. [But, if] you’re upwind of the fires, you will experience fresher air.”

Dodd said that ultimately, the Emerald Triangle needs a rain front bringing a “push of moisture with some winds to calm the fire behavior and clear out the smoke. Until then, it’s hard to do both.”

Dodd did offer a glimmer of hope on the horizon. According to long-range modeling, Dodd says there are indications that the region could receive a pattern of cooler, moister weather around October 10-11, both clearing the skies and dampening the region’s wildfires.

Go here to check on the current air quality and here to see a map created by AirNow focused on areas in Northern California impacted by the wildfires and accompanying smoke.

The Mendocino County Air Quality Management District has prepared a Frequently Asked Questions site to address concerns associated with wildfire smoke, including the health risks associated with smoke, how to protect oneself from the smoke, how masks and respirators protect from smoke, and many more.