Wildfire smoke drifting into New England from fires burning in northern Minnesota and western Ontario is producing hazy skies across Massachusetts and prompting continued air-quality concerns, meteorologists said Wednesday.
What’s happening and why it matters
Upper-level winds — driven by the jet stream pattern over the region — have carried fine particles hundreds of miles into southern New England, creating a thin veil of smoke that has reduced visibility and filtered sunlight into an orange glow in parts of the state. The presence of that smoke at ground level has led to an extension of air-quality alerts for the area and contributed to a heat advisory in effect for Wednesday.
The smoke’s arrival has direct public-health implications: fine particulate matter (PM2.5) can aggravate respiratory and cardiovascular conditions, particularly among children, older adults and people with preexisting lung or heart disease. Officials say air will be “unhealthy for sensitive groups” again tomorrow before improving later in the week.
- Source of smoke: wildfires in northern Minnesota and western Ontario/Canada
- Primary driver: upper-level winds transporting smoke into New England
- Air quality outlook: unhealthy for sensitive groups tomorrow; expected to improve by Friday
Impact across the region
Visual reports and photos from across Rhode Island and Massachusetts captured a reddish sun and muted daylight as the smoke thinned sunlight. In some communities, temperatures warmed less than expected on Wednesday due to the sun being filtered by the smoke layer, though humidity remained elevated.
| Day | Expected conditions |
|---|---|
| Wednesday | Hazy skies; heat advisory in effect; air-quality alert extended |
| Thursday ("tomorrow") | Air expected to be unhealthy for sensitive groups as smoke reloads in afternoon |
| Friday | Upper-level winds shift; cooler, drier air likely to thin smoke and improve air quality |
Officials and meteorologists advise residents to monitor local air-quality forecasts and take common-sense precautions when air quality is reduced, including limiting prolonged outdoor exertion for sensitive individuals and staying hydrated during the heat advisory.
Local news outlets have published photo galleries showing the hazy skies; viewers in communities such as Lowell and other parts of the state submitted images capturing the filtered sun.
Further updates will come as forecasts change and as the upper-level wind pattern evolves through the week.
