West Hempstead gas & diesel watch: Regular $4.01; diesel $5.45 (AAA, 7/19/26)

AAA’s latest Nassau-Suffolk metro price check for July 19, 2026 puts regular gas at $4.01 per gallon and diesel at $5.45. Both prices are higher than yesterday and last week, while both are lower than a month ago. Diesel also stays above the $5 mark—one reason fleet costs keep feeling “stubborn” even when gas eases.

Regular gas: $4.01 today (Nassau-Suffolk)

For regular, AAA lists an average of $4.01/gallon as of 7/19/26. That’s up from $3.98 yesterday and up from $3.92 a week ago. It’s down from $4.09 from last month and up from $3.10 a year ago.

Diesel: $5.45 today (Nassau-Suffolk)

For diesel, AAA lists $5.45/gallon as of 7/19/26. That’s up from $5.42 yesterday and up from $5.37 a week ago, but down from $5.61 last month. Diesel is still much higher than a year ago, at $3.90.

What this means locally for West Hempstead

For commuters, the practical takeaway is that a rise vs yesterday and last week can show up quickly—especially if you refuel more than once between workdays. For tradespeople, delivery drivers, and any business with service or delivery fleets, diesel is the line item to watch: when diesel moves, it can affect routing, how often vehicles are taken out for refuels, and ultimately what contractors and delivery costs look like to customers.

Keep in mind that AAA’s Nassau-Suffolk numbers are metro averages, not a guarantee of any specific West Hempstead station’s pump price. If you’re planning a longer trip or multiple refuels over the next few weeks, tracking whether month-over-month changes keep easing can be more helpful than focusing on a single day.

Quick national context: EIA update timing

Retail prices don’t move in isolation. The Energy Information Administration’s gasoline and diesel update is released on a set schedule (the latest release date shown by EIA was July 14, 2026, with the next release date listed as July 21, 2026). In the most recent weekly comparison EIA posts (07/06/26 to 07/13/26), U.S. regular gasoline rose from 3.777 to 3.855 per gallon, and on-highway diesel rose from 4.578 to 4.796—illustrating the kind of national swings that can ripple into local metro averages.

If you’re fueling today around West Hempstead, share the highest and lowest pump prices you’re seeing nearby—and the date/time you checked—so readers can compare notes across stations.

Sources

• AAA Fuel Prices — Nassau-Suffolk metro averages (current/yesterday/week ago/month ago/year ago) for regular and diesel
• EIA Gasoline and Diesel Fuel Update (release schedule + U.S. trend context)