NWS ALERTS: Air Quality Health Advisory 11 a.m. to 11 p.m. today for Nassau and Suffolk counties due to elevated ground-level ozone, NOT Canadian wildfire smoke. Sensitive groups - those with respiratory or heart-related health conditions - should limit prolonged outdoor exertion.

We start the week with sunshine and warm afternoons across Long Island, but air quality is a concern today. An Air Quality Alert is in effect from 11 a.m. to 11 p.m. for Nassau and Suffolk counties due to elevated ground-level ozone. Sensitive groups, including those with respiratory or heart issues, should limit time outdoors and avoid strenuous exercise.

Otherwise, the day is nice! Mostly sunny to partly cloudy with manageable levels of humidity today. Highs will reach the upper 80s today and Tuesday with dry weather.

By Wednesday, clouds increase with the chance for spotty showers later in the day, continuing into Thursday. These will be scattered and not a total washout but keep an umbrella handy. Wednesday will be the hottest feeling day of the week with highs still in the upper 80s for most, but with higher humidity that will make it feel several degrees hotter.

Friday begins a stretch of lower humidity and more comfortable temperatures. The weekend looks nice right now with a mix of sun and clouds — perfect for any outdoor plans.

TODAY, Aug 11: AIR QUALITY ALERT — Otherwise, mostly sunny to partly cloudy, moderately humid at worst this afternoon. High: 87°F, Low: 66°F.

TUESDAY, Aug 12: Mostly sunny, a bit more of a humid afternoon. High: 87°F, Low: 70°F.

WEDNESDAY, Aug 13: A mix of sun and clouds. Hot and humid. Spotty showers possible. High: 87°F, Low: 72°F.

THURSDAY, Aug 14: Partly sunny with a few lingering showers possible. High: 85°F, Low: 70°F.

FRIDAY, Aug 15: Mostly sunny, less humid. High: 85°F, Low: 67°F.

SATURDAY, Aug 16: Mostly sunny, comfortable. High: 83°F, Low: 67°F.