For those who suffer from seasonal allergies, spring means red eyes, mucus and fits of sneezing. This year, the Lynn Canal has seen a remarkable spruce pollen bloom.

Pia Östensson, a biologist and pollen expert at Stockholm's Natural History museum, explains why there is so much aspen fluff this year and why it is not related to recent wildfires.

Spring blossoms, dusty streets, distant fires and a lack of rain combine to create hazardous respiratory conditions.

Pollen from birch trees was carried along with dust from the Sahara Desert on strong winds that originated in Eastern Europe.

Gallery | The fires, which were swept in from Mongolia by high winds, have caused almost $9.4 million in damage.

Shiveluch volcano (Kamchatka) in Kamchata is erupting. Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 33000 ft (10100 m) altitude or flight level 330 and is moving at 55 kts in S direction.

Why air quality is worse at different times of day and how you might be violating city code with your leaf blower.

Alder catkins (the pollen-rich flowers on alder trees) haven't reached their peak yet, but there are a lot of them. There can be four to five million pollen particles in a single catkin.

Clearwater, Golden, Williams Lake, Malahat a few of the cities that broke records Wednesday

Spectacular sandstorm hits Tyumen as high winds uproot trees, blow over bus shelters, and damage cars.

As many allergy-sufferers across Finland may have already suspected, birch pollen levels were very high on Wednesday, according to the University of Turku.

City a ‘smoky hell’ as hill on opposite side of Amur River is in flames while driver films inferno on train track.

Washington state Gov. Jay Inslee proclaimed a state of emergency Saturday for counties in the eastern part of the state

Passenger experiences usually turbulent conditions on winter flights.

Agassiz broke a record that goes back more than 100 years

In the midst of B.C.'s record-breaking wildfire season, the heat from four fires triggered huge thunderstorms that sent smoke flying into the stratosphere, eventually spreading through the entire Northern Hemisphere.

Climate change will make for more frequent wild swings in California weather, with both more extremely dry and extremely wet years and 'weather whiplash' in between.

For a few decades now, retired surgeon Jon Reiswig has lived with a perplexing oddity: the water in front of his North Douglas home constantly bubbles.

Not only is pollen is beginning to spread, but road gravel dust and studded tyres grinding the tarmac can also cause particulates that cause breathing difficulties. There are a few ways to deal with the dust, however.