Brisbane Mold Forecast - Today, Tomorrow and the Week Ahead
Mold Today
Today (11 October) mold in Brisbane is low; cladosporium and alternaria are low.
Mold Tomorrow
Tomorrow (12 October 2026) levels are similar to today.
7-Day Trend
Over the next week cladosporium will increase; alternaria will decrease.
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Mold Risk
Today - 11 October
| Mold species | Level | Value |
|---|---|---|
| Alternaria | Low | 16/100 |
| Cladosporium | Low | 18/100 |
Tomorrow - 12 October
| Mold species | Level | Value | 7-Day Trend |
|---|---|---|---|
| Alternaria | Low | 15/100 | Steady |
| Cladosporium | Low | 17/100 | Steady |
Local Mold Conditions
Mold in Brisbane thrives on the city's lush subtropical vegetation and humid air. Leaves, bark and flowers from eucalypts, figs and other trees collect in gutters, garden beds and along the Brisbane River and its many creeks, where they rarely dry out. Lawns, parks and sports fields add grass clippings, and the mangroves and wetlands around Moreton Bay and the river mouth keep plant debris constantly damp. Floods and heavy summer storms can leave large amounts of wet debris behind.
Brisbane's warm, humid climate keeps mold spores in the air all year. Counts usually rise with the start of the wet season in November and peak from December to April, when temperatures average around 25°C and frequent storms and heavy rain keep leaves, grass and mulch damp. Cladosporium is the most common spore, while Alternaria rises on drier, windy days. Floods and storms can bring sharp increases a day or two later, and the drier, milder months from June to September bring the lowest counts in Brisbane.
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Resource Hub
Mold forecast neighborhoods 112 neighborhoods
Sports venues in Brisbane 6 sports venues
Popular Local Routes 12 routes
Local parkruns 37 parkruns
Local events 5 events
Frequently Asked Questions About Mold in Queensland
Why do I still have allergy symptoms after the pollen season?
Allergy symptoms after the main pollen season may be caused by mold spores. Outdoor mold levels can remain high into late summer and autumn, when pollen levels are already falling. Mold allergy can cause symptoms similar to pollen allergy, including sneezing, a runny or blocked nose, itchy eyes, coughing, and wheezing.
What are mold spores and why do they cause allergies?
Mold spores are tiny particles released by fungi into the air. When inhaled, they can trigger an allergic reaction in sensitive people. Common symptoms include sneezing, a runny or blocked nose, itchy or watery eyes, coughing, and wheezing.
When are mold spore levels highest?
Outdoor mold spore levels often increase during warm and humid conditions, particularly when there is plenty of decaying vegetation. Levels can vary considerably with weather, season, vegetation, and location, and some types of mold are more common during particular times of the year, e.g. in the Fall.
How can I reduce my exposure to mold spores?
If you are sensitive to mold, check local mold spore levels and forecasts before spending long periods outdoors. On high-risk days, reducing time around dense vegetation, compost, fallen leaves, and other sources of decaying plant material may help limit exposure.
Understanding the Scale
The 0–100 mold scores represent risk levels, not direct mold measurements. Higher scores indicate higher risk.
Mold
| None | 0 | No or negligible risk of exposure. Pollen/mold exposure is expected to be minimal. |
| Low | 0-25 | Low risk of exposure. Small amounts of pollen or mold spores may be present. |
| Moderate | 25-50 | Moderate risk of exposure. Pollen/mold exposure is expected to be noticeable. |
| High | 50-75 | High risk of exposure. Elevated pollen/mold exposure is expected. |
| Very High | 75-100 | Very high risk of exposure. Pollen/mold exposure is expected to be at or near its highest levels. |
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