The sky turned a hazy, grayish white across the Northwest as winds that had previously pushed much of the smoke offshore shifted, bringing unhealthy levels of near-microscopic dust, soot and ash particles to Portland, Seattle, and Vancouver, British Columbia. San Francisco also continued to ...
For several days, parts of the Midwest and Northeast have been seeing unhealthy levels of smoke, with Detroit, Chicago and New York Cityexperiencing some of the worst air qualityin the world, according toIQAir,which monitors the air quality index around the world. On Saturday, the air quality...
WILDFIRE SMOKE BLANKETS AREA Air Quality Index Tops Unhealthy ThresholdSmoky air that blew into the Inland Northwest in a few hoursThursday afternoon likely will...Prager, Mike
The National Weather Service said winds were continuing to bring smoke from the fires into the U.S. on Saturday, causing "moderate" to "unhealthy" air quality across the U.S. Northeast, Mid-Atlantic, Ohio Valley and Midwest. For many areas, however, that marked improvements from earlier in...
Smoke-modelling forecasts are indicating that Wednesday could feature another high concentration blast of smoke to the region, where eastern sections of the GTA, and all of eastern Ontario, as well as parts of southern Quebec, could experience even worse air quality...
When the air quality index is between 101-150, it’s unhealthy for sensitive groups. When it reaches 151-200, the air is unhealthy, when it’s between 201-300 the air is very unhealthy, and when it’s between 301-500 the air is hazardous (10). ...
Wildfires in California are of increasing concern as recent years have brought extremely destructive and widespread wildfires with devastating loss of life and property and long periods of unhealthy air quality. The largest Southern California wildfires are typically associated with anomalously hot ...
During a Spare the Air Alert, outdoor exercise should take place only in the early morning, when smog levels are lower. When smoke reaches unhealthy levels, residents should stay inside if possible with windows and doors closed until it subsides, if temperatures allow. When it's too hot, re...
Smoke-modelling forecasts are indicating that Wednesday could feature another high concentration blast of smoke to the region, where eastern sections of the GTA, and all of eastern Ontario, as well as parts of southern Quebec, could experience even worse air qu...
The data also shows ozone levels, which can become harmful to health on hot, sunny days when ozone reaches unhealthy levels. AirNow reports air quality using the Air Quality Index (AQI). The higher the AQI level, the greater the level of air pollution and the greater the health concern....