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MOST ACCURATE FORECAST: Slight chance of showers in some Arizona spots

It's a warm start to December in the Valley! After a record-setting Tuesday in Phoenix, temperatures will begin to gradually drop today, thanks to a weak storm system moving through. This system will allow Valley highs to dip into the upper 70s for the rest of the week, which is still nearly 10 degrees above normal for this time of year.

By: Amber Sullins

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PHOENIX — Maricopa County Air Quality has issued a No Burn Day, which means wood-burning in fireplaces, stoves, and outdoor firepits is prohibited overnight.

Fine particle pollution, such as dust and smoke, is lingering over the Valley at unhealthy levels. The worst of it will impact us in the morning hours, with air quality gradually improving throughout the day. If you have any respiratory issues, such as asthma or COPD, limit your time outside in the morning to avoid difficulty breathing.

Additionally, do not use leaf blowers on No Burn Days. Try to carpool or take public transportation, and avoid idling your car in long drive-thru lines.

We're also tracking a weak storm system moving through Arizona that may bring a few spotty showers to parts of central and eastern Arizona on Thursday.

Here in the Valley, there's a slight chance of a few isolated showers Thursday afternoon and evening but we are not expecting much.

Temperatures will drop little by little in the coming days, but Phoenix will remain in the upper 70s through the end of the week. That's around 10 degrees above normal for this time of year.

The weekend looks slightly cooler with highs in the mid 70s across the Valley.

Early next week, another storm system will pass to our north, bringing chances for snow showers to northeastern Arizona and potentially dropping temperatures significantly across the state.

Here in the Valley, daytime highs will fall into the 60s with overnight lows plunging into the 40s by Tuesday and Wednesday.