Worst air pollution Mullumbimby, today and tomorrow

Today (5 August): Air quality in Mullumbimby is fair. AQI and O3 are fair; PM2.5, PM10, NO2, SO2, CO, HCHO, and PM1 are good. Pollution peaks around 3:00 PM (O3: 25.4/100).
Tomorrow (6 August 2026): Air quality in Mullumbimby is fair. All pollutants stay as today. Pollution peaks around 3:00 PM (O3: 23.1/100). Airmine updates local air quality forecasts four times daily.

For long term forecasts and maps, see the Airmine app

Developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team

Use our Strava plugin to check your own exposure.

Sitting inland in the Brunswick Valley, Mullumbimby loses some of the coastal ventilation that keeps nearby Byron Bay clear, so smoke and humidity tend to linger longer over the town. Bushfire smoke from surrounding forested ranges is the dominant seasonal concern, especially in drier spring conditions, while the wet season brings high humidity and occasional mould issues. Wood smoke from home heating adds a modest winter contribution. Overall background air is clean, reflecting the town's small size and rural surrounds.

Today - 5 August | Pollution peaks at 15:00

AQI:

Fair

25.4/100

PM2.5 (fine particles):

Good

6.5/100

PM10 (coarse particles):

Good

2.2/100

NO2 (nitrogen dioxide):

Good

0/100

O3 (ozone):

Fair

25.4/100

SO2 (sulfur dioxide):

Good

0/100

CO (carbon monoxide):

Good

0/100

HCHO (formaldehyde):

Good

4.8/100

PM1 (ultrafine particles):

Good

8.2/100

Levels show the poorest local air quality during the day

Tomorrow - 6 August | Pollution peaks at 15:00

AQI:

Fair

23.1/100

PM2.5 (fine particles):

Good

5.8/100

PM10 (coarse particles):

Good

1.8/100

NO2 (nitrogen dioxide):

Good

0/100

O3 (ozone):

Fair

23.1/100

SO2 (sulfur dioxide):

Good

0/100

CO (carbon monoxide):

Good

0/100

HCHO (formaldehyde):

Good

4.3/100

PM1 (ultrafine particles):

Good

6.3/100

Pollen forecast in Mullumbimby

View pollen forecast

Frequently Asked Questions

Is air quality bad in Mullumbimby right now?

On 5 August 2026, overall air quality in Mullumbimby is fair. AQI is the main air quality indicator at 25.4/100. Pollution peaks around 3:00 PM (O3: 25.4/100).

Will air quality be worse tomorrow in Mullumbimby?

On 6 August 2026, air quality conditions in Mullumbimby will be similar to today, with AQI forecast at fair at 23.1/100. Pollution peaks around 3:00 PM (O3: 23.1/100).

When is air pollution at its worst in Mullumbimby?

Tucked into the Tweed hinterland, Mullumbimby sees its worst air in the pre-wet-season window of August through November, when hazard-reduction and paddock burns can settle smoke into the valley overnight. Cane-fire haze can add to this through early summer. Outside those months, expect consistently clean readings, with any dip usually clearing by mid-morning as onshore winds pick up.

Are air quality levels in Mullumbimby based on measurements or forecasts?

It is forecasts derived by downscaling forecasts provided by EU’s Copernicus Atmosphere Monitoring Service (CAMS) by taking into account local conditions such as traffic patterns. CAMS bases its forecast on satellite measurements of particles and chemical compounds in the atmosphere. Airmine’s services were developed with support from the European Space Agency (ESA)’s Business Applications and Space Solutions (BASS) team.

Why doesn’t the forecast always reflect wildfire impacts?

Airmine’s forecast uses CAMS (Copernicus Atmosphere Monitoring Service) as its background atmospheric model. While CAMS includes wildfire emissions, these are derived from satellite observations and are not available in real time. During rapidly evolving wildfire events, there may therefore be a delay before increased emissions are incorporated into the model. As a result, the forecast may temporarily underestimate PM₂.₅ and other pollutants associated with wildfire smoke.

During rapidly evolving wildfire events, CAMS may lag by approximately 1–2 days before increased wildfire emissions are fully represented, which can lead to temporary underestimation of PM₂.₅ concentrations in Airmine’s forecast.

Want to see air quality forecasts for other cities in Australia?

Check air quality in other popular cities:

Data provided by Airmine — Last update: 4 August 2026 at 16:38 CEST (Data is updated four times daily.)

This forecast is produced independently using Airmine's own atmospheric data and models.

Unless explicitly made clear, the content on this site has not been paid for by external organisations and is Airmine's sole responsibility.

Disclaimer: Forecasts are provided for informational purposes only and should not be relied upon as medical advice. Actual pollen and air quality conditions may vary from the forecast. If you have allergies, asthma, or another medical condition, consult a healthcare professional. Please see our Terms of Service for important information about limitations of liability.

For long term forecasts and maps, see the Airmine app