Smoke from the raging wildfires in the West Coast was so severe that it created an air quality alert as far as Reno, Nevada, on Tuesday.
Several Nevada counties reported their worst recorded air quality index numbers in the two decades they’ve been monitoring air quality.
MORE: Dangerous fire conditions continue as dozens of wildfires devastate the WestWashoe County, which includes Reno, recorded a high of 291 AQI Tuesday, according to the Washoe County Air Quality Management Division.
The agency noted that the levels of fine particle matter, PM, was dangerously high.
"With a new record set, the top 10 worst PM2.5 daily average AQIs have now all occurred within the last 11 months. We also set a record for the worst PM10 day as well with an AQI of 183," the agency tweeted.
MORE: Climate change may be causing an early start to fire season in the West, experts sayThe poor air quality resulted in the closure of schools in several Nevada counties and Lake Tahoe Community College Tuesday. Clark County, Nevada, issued an air health advisory and urged people to stay indoors and close their windows.
The smoke has been an ongoing problem for the West Coast as several wildfires are burning in California. The Caldor Fire, which Washoe County AQMD said is the cause of its poor air quality, has burned 117,704 acres and was only 9% contained as of Tuesday, according to the California Department of Forestry and Fire Protection.