The volcanoes in the Caribbean and Iceland are currently belching a bunch of fine particulate matter into the atmosphere.
Will there be an impact on our near-term weather pattern?
Could be.
How did the eruption of Mount Pinatubo in 1991 affect the global temperature?
Nearly 20 million tons of sulfur dioxide were injected into the stratosphere in Pinatubo’s 1991 eruptions, and dispersal of this gas cloud around the world caused global temperatures to drop temporarily (1991 through 1993) by about 1°F (0.5°C).