The smoke comes from fires in Butte and Tulare counties. People should stay indoors, or use proper masks if they have to be outdoors, the San Joaquin Valley Air Pollution Control District said in an email update Friday. The bad air prompted closure of Modesto Junior College and California State University, Stanislaus.
Secondly, is it a Spare the Air Day in Sacramento? Sacramento-area air districts have issued a Spare the Air alert effective Tuesday due to a poor air quality forecast, the fifth such warning of 2019. A Spare the Air day is automatically triggered when the forecast for the days ozone air quality index exceeds 125. Tuesday is expected to reach a reading of 129.
Furthermore, how bad is the air quality today?
Air Quality Scale
AQI Air Pollution Level Health Implications 201-300 Very Unhealthy Health warnings of emergency conditions. The entire population is more likely to be affected. 300 Hazardous Health alert: everyone may experience more serious health effects
What is PM 2.5 and pm10?
PM10 is particulate matter 10 micrometers or less in diameter, PM2.5 is particulate matter 2.5 micrometers or less in diameter. PM2.5 is generally described as fine particles. By way of comparison, a human hair is about 100 micrometres, so roughly 40 fine particles could be placed on its width.
