Weather

Sacramento heat rises while air quality falters under smoky assault

Fires in Lake County, where firefighter Chris Schwegler walks under smoke along Morgan Valley Road near Lower Lake last week, are producing smoke that has reached the Sacramento Valley and is contributing to poor air quality. Temperatures are expected to fall slightly and air quality improve as the week progresses, experts say.
Fires in Lake County, where firefighter Chris Schwegler walks under smoke along Morgan Valley Road near Lower Lake last week, are producing smoke that has reached the Sacramento Valley and is contributing to poor air quality. Temperatures are expected to fall slightly and air quality improve as the week progresses, experts say. The Associated Press

The summer heat made its comeback this weekend, as temperatures hovered around 100 degrees on Saturday and Sunday and are expected to stay sizzling Monday. In addition, smoke from wildfires is contributing to poor air quality.

Monday’s high temperature is forecast to top 100 degrees, although temperatures are expected to gradually drop Tuesday through Saturday into the 90s.

Attendees of the City of Trees music festival Saturday in Elverta found hot weather conditions particularly burdensome. Concertgoer John Simko described City of Trees as “hot as hades” on Twitter.

In addition to rising temperatures, smoke from Northern California’s wildfires clouded the skies above Sacramento and the Bay Area, particularly on Saturday, as northerly winds blew smoke from fires in Lake County into the western side of the Sacramento Valley and beyond.

The heat and smoke contributed to higher-than-average ozone conditions; as heat traps air particles within the atmosphere, pollutants remain stagnant and air quality worsens, said National Weather Service forecaster Courtney Obergfell.

Moderate winds will continue to push smoke into the region through Monday, resulting in air-quality readings deemed unhealthy for sensitive individuals, according to the Sacramento Metropolitan Air Quality Management District. Children, active adults and people with respiratory conditions are advised to stay indoors, run air conditioning and avoid heavy exertion outdoors until the air improves.

Air quality is expected to return to healthier levels Wednesday through the rest of the week, improving as the onshore flow of air pushes inland.

“Smoke should dissipate through most of the Sacramento region by Wednesday, although some areas, which are still hard to pinpoint, may experience lingering haze through the end of this week,” said Obergfell.

Here’s the seven-day forecast:

Monday: High of 102-103 degrees, with evening cooling to 63 degrees.

Tuesday: High of 96-97 degrees, with a nighttime low of 61 degrees.

Wednesday: High temperatures will drop into the low 90s with a high between 91 and 92. The evening low will reach around 60 degrees.

Thursday: High will reach 91 degrees, with an evening low of 62 degrees.

Friday: Conditions will match Thursday.

Saturday: Temperatures will increase a few degrees with a high of 93 and an evening low in the 60s.

Brenna Lyles: 916-321-1083, @brennmlyles

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