Amazon Rainforest Fires Increase as Dry Conditions Intensify
Wildfires are increasing across parts of Brazil’s Amazon rainforest, raising concerns about environmental damage, air pollution and the future of one of the world’s most important forest ecosystems. Scientists say unusually dry conditions associated with El Niño, combined with human activities, are making the situation more dangerous.
In a report published on October 15, NASA’s Earth Observatory said satellite observations had detected a sharp increase in fire activity and smoke emissions across the central and eastern Amazon beginning in September 2026.
The situation has also affected communities near Manaus and Santarém, where smoke from forest fires has created serious air-quality concerns.
Brazil Reports a Sharp Rise in Fire Incidents
According to a Reuters report published on October 14, Brazil’s Amazonas state recorded 1,679 fire incidents during the first two weeks of October. That was a 253 percent increase compared with the same period last year.
The fires have affected communities across the region, and at least 36 municipalities in Amazonas had declared emergencies, according to the report. Authorities have also deployed firefighting teams and aircraft to help control the blazes.
Officials suspect that some fires may have been deliberately started to clear land for farming or ranching. Investigations are expected to help establish the circumstances behind suspected cases of illegal burning.
Smoke Creates Health Concerns in Manaus
The fires are not only threatening forests and wildlife. Smoke has also affected people living in nearby cities.
NASA reported that on October 12, fine particulate pollution in Manaus reached more than 135 micrograms per cubic meter, according to the measurements cited in its report. Schools closed, while some public events and children's sports activities were cancelled amid hazardous air-quality conditions.
Fine particles in wildfire smoke can enter the respiratory system and worsen breathing problems. People living in smoke-affected areas should follow local health advisories, limit strenuous outdoor activity when air quality is poor and seek medical attention if they experience severe breathing difficulties.
How El Niño and Drought Can Make Fires Worse
El Niño is a climate pattern that changes weather conditions in different parts of the world. In the Amazon, disrupted rainfall and prolonged dry conditions can leave vegetation more vulnerable to burning.
NASA reported that rainfall in Manaus was approximately 95 percent below normal in August and 60 percent below normal in September, according to Brazil’s National Institute of Meteorology.
Scientists also warn that fires started to clear land can escape into dry forest vegetation and spread beyond their original locations. Human activity is therefore an important part of the current crisis, alongside drought and extreme heat.
Why Amazon Rainforest Fires Matter to the World
The Amazon is home to an extraordinary range of plant and animal species and plays an important role in regional rainfall patterns and the global carbon cycle. Severe fires can destroy habitats, release stored carbon and damage forests that may take years or decades to recover.
Repeated burning can make some areas more vulnerable to future fires by damaging trees and changing the structure of the forest. Wildlife that is poorly adapted to frequent fires can also face serious risks.
The consequences extend beyond Brazil. Smoke can affect nearby communities, while forest degradation can weaken the Amazon’s ability to store carbon and maintain its ecological functions.
What Could Happen in the Coming Months?
NASA scientists expect fire activity to remain a concern around Manaus and Santarém until seasonal rainfall provides relief, potentially in December 2026 or January 2027. They also warned that fire risks could increase farther north in parts of Brazil and neighboring countries during November and December.
These are scientific expectations, not guarantees. Weather conditions, rainfall and firefighting efforts will influence how the situation develops.
Conclusion
The rising number of fires in Brazil’s Amazon rainforest highlights the combined risks of drought, climate variability and human-driven land clearing. The latest satellite observations and reported fire figures show why monitoring, prevention and rapid emergency response are important.
Protecting the Amazon will require efforts to prevent uncontrolled burning, enforce environmental rules and reduce the damage caused by fires to forests and nearby communities.
Journalist: Vijay Singh