Mount Isa U91 price forecast
As of Mon 9 Nov, Mount Isa U91 averages 245.1 c/L, and FuelRadar expects it to stay about the same over the next 7 days (estimate only). No weekday has been reliably cheaper over the last 8 full weeks; the cheapest station, Solo Mount Isa, is 231.5 c/L, 13.6 c/L under the average.
U91
About the same this week
Estimate only: expected to stay about the same over the next 7 days. Likely 236.3–253.9 c/L by Tue 17 Nov, from how far the average moved over 7 days in the last 90 days. Past 7-day estimates missed by about 6.5 c/L on average, more than assuming prices stay the same (6.3 c/L).Cheapest of 4 stations: 231.5 c/L at Solo Mount Isa · Updated
Alert me below 230.5
Mount Isa prices are typical right now
The city average of 245.1 c/L sits inside the usual range of 227.4 to 255.8 c/L for the last 84 days. That is higher than on 50% of the last 84 days.
Mount Isa U91 forecast explained
What could change it
Wholesale and crude signals: the national wholesale petrol price fell 13.7 c/L to 211.5 c/L over the five days to , and Brent crude fell 5.1% to US$98.32 a barrel. The estimate does not use them directly.
Capital cities
Each capital's latest city daily average and where it sits in its price cycle; each row opens that city's forecast. City daily averages, not station prices. Averages dated Mon 9 Nov.
| Capital | Average (c/L) | Price cycle | Call |
|---|---|---|---|
| Sydney | 225.8 | Cycle paused | 223.2 by Tue 17 Nov |
| Melbourne | 228.9 | Cycle paused | 226.8 by Tue 17 Nov |
| Brisbane | 227.6 | Cycle paused | 225.5 by Tue 17 Nov |
| Perth | 217.4 (lowest) | Falling since its peak · 4 days since the 231.4 peak | 205.4 by Tue 17 Nov |
| Adelaide | 219.4 | Cycle paused | 217.1 by Tue 17 Nov |
| Canberra | 242.3 | Cycle paused | 242.3 by Tue 17 Nov |
| Darwin | 242.3 | Cycle paused | 241.5 by Tue 17 Nov |
| Hobart | 240.0 | Cycle paused | 240.0 by Tue 17 Nov |
When is fuel cheapest in Mount Isa?
Mount Isa has no regular price cycle: its U91 prices follow wholesale costs, so they tend to move a week or two after the terminal gate price.
On Fri 6 Nov the national terminal gate (wholesale) price was 211.5 c/L and the Mount Isa city average 240.7 c/L, 29.2 c/L above it.
No weekday was the cheapest in most of the last 8 full weeks to : the U91 weekday averages in Mount Isa were within 1.2 c/L of each other once the overall price movement is removed.
| Cheapest weekday | No set dayNo day led most of 8 full weeks |
|---|
Terminal gate prices published by the Australian Institute of Petroleum.
See the Mount Isa U91 forecast in the app
The 7-day forecast, a fill-now-or-wait call each day and price alerts. Free on iPhone and Android.
App preview. Prices shown are example captures, not current reports.
How accurate is the forecast?
- Forecast miss, 7 days ahead
- 6.49 c/L
- "Prices stay the same"
- 6.30 c/L
Source: FuelRadar (fuelradar.com.au)
The week-ahead forecast has not yet beaten "prices stay the same", so every estimate is labelled "Estimate only" with its average miss.
From 303 checks of the seven-day estimate against the reported city daily average, beside assuming prices stay the same over the same days.
| Ahead | Miss | No change | Result |
|---|---|---|---|
| Next day | 1.15 | 1.25 | Closer than no change |
| 3 days ahead | 2.99 | 3.25 | Closer than no change |
| 7 days ahead | 6.49 | 6.30 | About the same as no change |
| 14 days ahead | 10.92 | 10.39 | Further off than no change |
| Average miss in c/L over each horizon's replay checks. The 7-day row decides whether the call names a direction. | |||
Mount Isa forecast graphics for news
The Mount Isa U91 forecast board and "When to fill", sized for TV (16:9), feeds (4:5) and stories (9:16).
How we forecast
FuelRadar has helped Australian drivers find cheaper fuel since 2020. Each estimate starts from Mount Isa's reported daily city averages and how they have moved recently. A city daily average is FuelRadar's scheduled morning average of the city's reported station prices, the figure this page quotes for every capital. Where a city has a regular price cycle, the estimate projects that cycle; elsewhere it follows the recent trend, blended with the latest dated wholesale price change. The likely range widens with each day ahead.
Forecast questions
When will U91 prices go down in Mount Isa?
Estimate only: U91 in Mount Isa is expected to stay about the same over the next 7 days (the latest city daily average, 245.1 c/L on Mon 9 Nov). Likely 236.3–253.9 c/L by Tue 17 Nov, from how far the average moved over 7 days in the last 90 days. Down 0.6 c/L on a week ago (245.7 c/L on Mon 2 Nov). Past 7-day estimates missed by about 6.5 c/L on average, more than assuming prices stay the same (6.3 c/L). Check current station prices before you fill.
What is the best day to buy U91 in Mount Isa?
No weekday was consistently cheaper in Mount Isa over the last 8 full weeks to Sun 8 Nov once the overall price movement is removed: the weekday averages were within 1.2 c/L of each other.
How accurate is FuelRadar Australia's U91 price outlook?
Not accurate enough yet to tell you to fill or wait, so we don't.
What were the lowest and highest U91 prices in Mount Isa in the last 90 days?
Since Wed 12 Aug, the Mount Isa U91 city daily average ranged from 218.6 c/L on Sat 15 Aug to 262.2 c/L on Sun 27 Sept. It was 245.1 c/L on Mon 9 Nov.
Will petrol prices go up tomorrow in Mount Isa?
Estimate only: FuelRadar's Mount Isa estimate for Wed 11 Nov is 245.1 c/L, the same as the 245.1 c/L reported for Tue 10 Nov. Check current station prices before you wait to fill.
When will diesel prices go down in Mount Isa?
Diesel does not usually follow the petrol price cycle, so there is no regular low to wait for. The Mount Isa diesel city daily average was 269.8 c/L on Mon 9 Nov, down 21.0 c/L over 30 days. The national wholesale diesel price fell 9.7 c/L over the five days to Fri 6 Nov. FuelRadar names no date for a fall: the Mount Isa diesel forecast gives its day-by-day estimate and likely range.
How often is the outlook updated?
We update the forecast overnight. For anything that changed today, check the map.
Fuel price reports
What drivers paid in every state and territory in October 2026, town by town.
- Australia U91
- 242.8c/L +17.3 on the period before
- Read the Australian reportEvery town we could rank, the capital against the rest and the cost of a litre
- Australian fuel price reportPDF · October 2026Download
- Every fuel price report