Monday night saw a hazy sunset at White Rock beach. (Katya Slepian/Black Press)

CANCELLATION: Air quality advisory Lower Mainland has ended

A change in the weather pattern means less smoke from U.S. wildfires coming to this area.

UPDATE Wednesday: Metro Vancouver’s air quality advisory for the Metro Vancouver and the Fraser Valley has now been ended.

Earlier Tuesday morning, Metro Vancouver had not yet considered the air quality in the region a concern. The advisory was issued Tuesday but as of Wednesday morning, it was ended due to a change in the weather patterns.

“This smoke is coming all the way from southern Oregon, northern California and some fires in Washington, so by the time it gets here, the smoke is quite high in the atmosphere,” said Francis Ries, the air quality climate change division project engineer with Metro Vancouver.

“We are definitely seeing the impact of that smoke at our monitoring stations.”

READ: Lower Mainland covered in thick wildfire haze in early August

The main indicator of poor air quality are levels of PM 2.5 (fine particulate matter), Ries said. It irritates people’s lungs, throats, noses and eyes and can cause serious problems for those with heart or lung conditions, as well as those with diabetes.

“We’re not yet at the levels that are required to trigger an advisory,” he said. “It’s really a case of if you feel you’re being impacted, take steps to limit your exposure.”

Perhaps a bigger concern are the high ground-level ozone layers, caused by temperatures expected to hit 30 degrees Celsius and higher in the valley.

READ: Longest Metro Vancouver air quality advisory cancelled after nearly two weeks

“Ozone is a strong irritant,” said Ries. “The key precaution is to avoid exposure to outdoor air or strenuous exercise outdoors is definitely to be avoided on high ozone days.”

The North Shore mountains are not helping.

“We’re just on the western edge of the plume,” said Ries. “And because of this mountainous valley topography, it is catching the smoke from the upper air a little bit better.”

The western edges of the Fraser Valley also sees more winds blowing in from the Pacific, which clears the air in Vancouver and Richmond, but can also blow it into Surrey, Langley and further east. The sea breeze will eventually help clear the haze from the valley, Ries said.


@katslepian

katya.slepian@bpdigital.ca

Like us on Facebook and follow us on Twitter.

Just Posted

Sometimes it’s okay to simply try

I feel like a success even though I failed at donating blood

‘Beauty amongst such tragedy:’ B.C. photographer captures nature’s trifecta

David Luggi’s photo from a beach in Fraser Lake shows Shovel Lake wildfire, Big Dipper and an aurora

Air quality advisory continues in the Lower Mainland

Smoke from Interior fires brings fine particulate

Blue bags are out for curbside recyling and blue bins are in

Use your own bin or the one the city gave you, but no more bags, please, except for shredding

Fraser Valley fire departments form ‘strike teams’ to combat wildfires

Boston Bar, Chilliwack River Valley and Popkum departments form strike teams to fight wildfires

Fast food chains look to capitalize on vegetarian, vegan trend with new items

Seven per cent of Canadians consider themselves vegetarians and 2.3 per cent identify as vegans

B.C. swimmer halts journey across Strait of Juan de Fuca after hypothermia sets in

Victoria MS athlete Susan Simmons swam for eight-and-a-half hours in 9 C choppy waters

‘Hard on water:’ Smoke not the only long-range effect of wildfires

The project began more than 10 years ago after southern Alberta’s 2003 Lost Creek fire

B.C. VIEWS: Genuine aboriginal rights can be misused and discredited

Camp Cloud one of long line of protests falsely asserting title

Prime Minister Justin Trudeau to march in Montreal’s Pride parade

Trudeau will end the day in his home riding of Papineau

Vancouver Whitecaps give up late goal in 2-2 draw with New York Red Bulls

Four of Vancouver’s next five games are at home

B.C. man designer behind Canucks’ retro jersey

Jeremie White was 20 years old when he told Canucks assistant GM Brian Burke he had a design

Most Read