As extreme heat is anticipated for the rest of the week, residents may be concerned about how air quality is being affected by the heatwave.
On Wednesday, the National Weather Service issued Excessive Heat Warnings for various parts of San Diego County, including the mountains, inland valleys, and, predictably, the deserts.
Even coastal areas were under a Moderate Heat Advisory beginning Thursday.
As a precaution, health experts have advised San Diegans to stay hydrated, remain in air-conditioned spaces, and limit sun exposure, particularly for extended periods.
While the dangers of extreme heat are evident, concerns about air quality also loom, especially for vulnerable populations such as the elderly, children, and individuals with underlying health conditions.
According to the National Weather Service, the same atmospheric conditions responsible for the weather also influence air quality. But how?
Meteorologists explain that higher air temperatures can accelerate chemical reactions, contributing to the formation of smog. Moreover, elevated heat and humidity can increase the concentration of certain pollutants.
AirNow’s interactive air quality map indicated that Thursday’s air quality across much of the county was at a “moderate” level, with an index of 58. This suggests that while air quality is generally acceptable, it may present moderate health concerns for certain sensitive groups.
AirNow advises that “if you are unusually sensitive to particle pollution, consider reducing your activity level or shortening the time you spend outdoors.”
Looking ahead to Friday, forecasts predict air quality will remain at a “moderate” level, with an expected index of 56.