Wildfire Smoke Impacts on Air Quality in the Northeastern U.S. Updated: 2025-06-03 Read time: 10 minutes Smoke from wildfires burning in Canada is currently impacting the air quality in the Northeastern United States. The smoke has created hazy skies and poor air quality across the region, with some areas experiencing “unhealthy” or “hazardous” air quality. The wildfires in Canada are being fueled by hot, dry weather and high winds, and to date these fires have burned more than 3.8 million hectares (9.4 million acres) of land, and are still active. Table of Contents Updated June 15thCurrently, there are 219 wildfires in Canada that are labeled as ‘out of control’. The smoke has started to drift into the upper midwest states like Minnesota. On Wednesday, June 14th, St. Paul had an air quality index, or AQI, reading of 256 at 6 p.m. As of this morning, the AQI is under 100, although that is expected to rise later in the day. It is important to continue to take all precautions while the air quality is poor; reduce outdoor exercise, wear a mask, and take steps to manage your indoor air quality by keeping the windows closed, running an air conditioner, and using an air purifier with True HEPA and carbon filtration. Updated June 10thThis map shows the current status of the wildfires in Canada. Of all the wildfires that are still burning, about half are still considered not under control. The air quality in New York City has improved and is currently listed as an AQI of 69 and Washington D.C. is at 68, both are considered moderate. Charlotte, NC is also showing a moderate air quality index rating of 84. While the wildfires are continuing to burn, shifts in the wind patterns have helped improve the air quality in many cities in the Northeastern United States. Affected Areas The smoke from the wildfires in Canada has been detected as far away as 2,000 miles away in Michigan. The smoke is being carried by winds from the west and is expected to continue to affect the region for the next few days. The Environmental Protection Agency (EPA) has issued air quality advisories for much of the Northeast, warning that the smoke can cause respiratory problems, such as coughing, wheezing, and shortness of breath. The EPA is also urging people with respiratory problems to stay indoors and avoid strenuous activity. The poor air quality in the Northeast is a reminder of the dangers of wildfires and the importance of taking steps to protect our health. It is expected that this cloud of smoke will begin to move south throughout the week. And we’re seeing AQIs changing daily. If you are in any of the states listed, and affected by the smoke, please stay informed about the air quality conditions and take steps to protect yourself from the smoke. The states most impacted by the smoke from the wildfires in Canada are: New York New Jersey Pennsylvania Ohio Michigan Vermont Washington D.C. Air Quality Ratings in Affected Areas These states are all located downwind of the wildfires in Canada. The smoke has created hazy skies and poor air quality across the region, with some areas experiencing “unhealthy” or “hazardous” air quality. Here are some of the current air quality index ratings in the affected states, compared to their average normal AQI: New York: The AQI in New York City is currently 322, which is considered very unhealthy for sensitive groups. The average normal AQI for New York City is 50. New Jersey: The AQI in Newark, New Jersey is currently 245, which is considered very unhealthy for sensitive groups. Pennsylvania: The AQI in Philadelphia, Pennsylvania is currently 287, which is considered very unhealthy for sensitive groups. Ohio: The AQI in Cleveland, Ohio is currently 154, which is considered unhealthy for sensitive groups. Michigan: The AQI in Detroit, Michigan is currently 161, which is considered unhealthy for sensitive groups. Vermont: The AQI in Burlington, Vermont is currently 154, which is considered unhealthy for sensitive groups. Washington D.C.: The AQI in Washington D.C. is currently 276, which is considered very unhealthy. It is important to note that the AQI can vary from city to city within a state. For example, the AQI in New York City hit 322 on June 7th, while the AQI in Albany, New York was 166. This is because the AQI is affected by a number of factors, including the amount of smoke in the air, the wind direction, and the temperature. If you are in any of the states listed above, please be sure to check the air quality index before going outside. If the AQI is high, it is best to stay indoors and avoid strenuous activity. To check the AQI in your city visit AirNow.gov. Read our review of the 5 Best Air Purifiers for Pollution Read more How To Protect Yourself from Wildfire Smoke Wildfire smoke can be harmful to your health, especially for individuals with preexisting respiratory conditions like asthma, COPD, or heart disease. The fine particulate matter in smoke, such as PM2.5, can deeply penetrate the lungs and even enter the bloodstream, aggravating chronic health issues and increasing the risk of heart attacks and strokes. Even if you’re healthy, prolonged exposure to smoke can lead to respiratory discomfort, irritation, and long-term damage. To reduce the risk of exposure, here are more detailed recommendations for protecting your health during wildfire smoke events: Stay Indoors as Much as Possible Why it matters: Wildfire smoke can cause air quality to deteriorate quickly, with fine particles remaining suspended in the air for hours or even days. The best way to reduce exposure is to stay inside, ideally in an airtight environment. Close all windows and doors and avoid unnecessary trips outdoors. What to do: If you have air conditioning, set it to recirculate indoor air and avoid opening windows. This will help prevent smoky air from entering your home. If your home is not air-conditioned, consider using window fans to expel smoky air or create a makeshift “clean room” by setting up a portable air purifier. If You Must Go Outside, Wear a Mask That Can Filter Out Fine Particles Why it matters: Regular face masks or cloth coverings are not effective at filtering out the fine particles in wildfire smoke. A mask specifically designed to filter small particles, such as an N95 or P100 respirator, can reduce the amount of harmful particulate matter you inhale. What to do: Ensure the mask is properly fitted over your nose and mouth to prevent smoke from entering. N95 and P100 masks are available at most hardware stores and online, and they are designed to block up to 95-99% of airborne particulate matter. Avoid Strenuous Activity Why it matters: Physical exertion increases your breathing rate, which can lead to greater inhalation of harmful smoke particles. Activities like running, cycling, or even heavy yard work can increase your exposure to these dangerous particles. What to do: Limit outdoor activity and avoid exercise in areas where air quality is poor. If you need to go outside, consider taking breaks and resting regularly to reduce the strain on your body. Opt for lighter indoor exercises like yoga or stretching. Drink Plenty of Fluids Why it matters: Wildfire smoke can cause dehydration, especially if you’re experiencing irritation in your throat or sinuses. Staying hydrated helps your body cope with the irritation and can help your respiratory system flush out toxins. What to do: Drink water consistently throughout the day to keep your throat moist and help your body stay hydrated. Avoid alcohol and caffeine, as these can contribute to dehydration. Monitor Your Health and Seek Medical Attention If You Experience Respiratory Problems Why it matters: Wildfire smoke can exacerbate existing respiratory conditions and lead to symptoms like coughing, wheezing, shortness of breath, or chest tightness. People with asthma, COPD, or other lung conditions may need additional medication, such as inhalers or other prescribed treatments. What to do: Pay attention to changes in your breathing and health, and contact a healthcare provider if you experience persistent or worsening symptoms. If you have a respiratory condition, follow your doctor’s advice for managing symptoms during high smoke levels. Use an Air Purifier with HEPA Filters Why it matters: Air purifiers equipped with HEPA (High-Efficiency Particulate Air) filters are effective at removing fine particles from the air. A well-maintained air purifier can reduce indoor air pollution by trapping small smoke particles, helping you maintain cleaner air inside your home. What to do: Choose an air purifier that is appropriately sized for the room you plan to use it in and ensure it has a True HEPA filter. Also, look for units with activated carbon filters, which can help remove smoke odors. Run the air purifier continuously during smoke events and replace the filters as needed. By following these measures, you can significantly reduce your exposure to harmful wildfire smoke and protect your health during these hazardous air quality conditions. How To Choose an Air Purifier for Wildfire Smoke If you are looking for an effective and affordable air purifier for wildfire smoke, choose one that is the right size for your home, has a HEPA filter and a carbon filter, and is energy efficient. Here are some additional tips for using an air purifier during wildfire smoke: Place the air purifier in the center of the room to ensure that the clean air is circulated throughout the room. Run the air purifier continuously, especially during the day when you are home. Change the filters regularly, according to the manufacturer’s instructions. Keep the air purifier clean by dusting it regularly. By following these tips, you can help to improve the air quality in your home and protect your family from the harmful effects of wildfire smoke. Here are some of the best air purifiers for wildfire smoke: Buy on AmazonRatingPrice (without discounts)Noise Levels (dB)Size (H x W x D)CADR* (Smoke)CADR* (Dust)CADR* (Pollen)Energy Efficiency Alen BreatheSmart 45i Buy Now Starts at 429.00 23-49 dB H 25″ x W 15″ x D 8.5″ 194 207 230 1.1 to 50 watts Levoit Core 300 Buy Now Starts at 99.99 24-50 dB 8.7″ x 8.7″ x 14.2″ 141 140 145 0.8 to 45 watts — Winix 5500-2 Buy Now Starts at 249.99 27< dB 23.6″ x 15″ x 8.2″ 232 243 246 up to 70 Watts — Honeywell Allergen Plus HPA200 Buy Now Starts at 219.99 27-63 dB 18.86″ x 10.05″ x 17.72″ 200 190 180 up to 130 watts — These air purifiers are designed to help reduce wildfire smoke and improve indoor air quality. Choose based on the size of the room you need to purify and the level of filtration you require. Conclusion The ongoing wildfires in Canada have had a significant impact on air quality across the Northeastern United States, with regions as far as 2,000 miles away experiencing hazardous air conditions. The smoke, driven by dry weather, high winds, and uncontrolled fires, has caused poor air quality ratings, ranging from unhealthy to very unhealthy levels, across various states such as New York, New Jersey, and Pennsylvania. As these fires continue, it is critical for residents in affected areas to monitor air quality indexes and take necessary precautions to protect their health. Key measures include staying indoors, reducing strenuous outdoor activities, using air purifiers, and wearing masks when going outside. With the smoke expected to persist, ensuring proper indoor air quality and staying informed on air quality conditions will be essential for minimizing health risks. The situation highlights the broader environmental and health challenges posed by wildfire seasons and underscores the importance of preparedness in the face of such natural events. More On Pollution The Connection Between Air Pollution and Cancer Saharan Dust Cloud Heading to U.S. Asbestos in Homes: A Silent Air Pollutant The Basics of Air Pollution: An Overview Causes of Smog: Understanding its Effects and Solutions Natural Disaster Air Purifier Buying Advice