After a nice Monday, expect a great evening with a mostly clear sky and most temperatures in the 70s. It will continue to be nice overnight with lows in the upper 60s to near 70 degrees.

Please use caution in the heat Tuesday and Wednesday. It will feel better along the South Shore and East End, especially on Tuesday. By Thursday, the humidity will drop and even though it will still be hot, it will feel less extreme than Tuesday and Wednesday. There are no current threats for storms until possibly scattered showers and storms over the weekend.

TONIGHT: Mostly clear with lows in the upper 60s to low 70s. Wind: Southwest 5 mph to 15 mph.

TUESDAY: HEAT ALERT -- AIR QUALITY ALERT -- Mostly sunny with highs in the 80s to low 90s. In Nassau County, it will feel like up to 102 degrees. The heat will be more tolerable in Suffolk County, but use caution and try to limit overexertion because there is an air quality alert in effect for all of Long Island. Lows near 75 degrees.

WEDNESDAY: HEAT ALERT -- Mostly sunny, hot and humid. Highs around 97 degrees. It can feel like up to 102 degrees in Nassau County and western and central Suffolk County. Stay heat-smart, drink extra water and take breaks from the high heat. Lows near 74 degrees.

THURSDAY: Sun and clouds. Hot, but less humid. Highs around 92 degrees. Lows near 73 degrees.

FRIDAY: Mostly sunny. Highs around 86 degrees. Lows near 72 degrees.

SATURDAY: Partly sunny to mostly cloudy with a few showers and thunderstorms. Highs around 85 degrees. Lows near 70 degrees.

SUNDAY: Partly sunny with a few showers and thunderstorms. Highs around 84 degrees. Lows near 68 degrees.

MONDAY: Partly sunny. Highs around 82 degrees. Lows near 70 degrees.