Merriwa PM2.5 monitor

Hourly government air-quality observations from NSW DCCEEW.

New South Wales · -32.1266, 150.4582 · observed 27 Aug, 9:00 AM AEST · Government monitor

Official NSW DCCEEW station page

7.5Latest hourly PM2.5 · µg/m³Good · <12.5 µg/m³

6.312-hour NowCast · µg/m³Derived concentration, not an Australian AQI

4.6Rolling 24 hours · µg/m³38 stored readings in this page window

FairModel peak · next 24 h11.5–15.7 µg/m³ · GEOS-CF, CAMS and SILAM

What this monitor reports

7.5 µg/m³ is Good on the one-hour PM2.5 air quality scale. Current hourly reading.

The monitor belongs to NSW DCCEEW. Readings may be preliminary and revised by the agency.

The category applies only to the latest one-hour reading. It follows the Australian enHealth framework used by agencies including NSW, Victoria and Queensland. The NowCast and rolling mean are separately labelled derived concentrations. How the categories are used.

Nearby fires

150 km radius

Within 150 km, agencies report 1 other fire location. There are also 3 planned or registered burns.

View 1 nearby fire location

KARANILLA RD, QUIPOLLY83 km away · Under control · Structure FireNSW Rural Fire Service

Agency report details

ALERT LEVEL: Not Applicable
LOCATION: KARANILLA RD, QUIPOLLY 2343
COUNCIL AREA: Liverpool Plains
STATUS: Under control
TYPE: Structure Fire
FIRE: Yes
SIZE: 0 ha
RESPONSIBLE AGENCY: Rural Fire Service
UPDATED: 26 Aug 2026 17:31

Official source

View 3 planned or registered burns nearby

Forestry HR - Chichester SF Plantation120 km away · Under control · Hazard ReductionNSW Rural Fire Service

Agency report details

ALERT LEVEL: Planned Burn
LOCATION: CHICHESTER STATE FOREST BUSH MILL RD, UPPER KARUAH RIVER 2415
COUNCIL AREA: Mid-Coast
STATUS: Under control
TYPE: Hazard Reduction
FIRE: Yes
SIZE: 125 ha
RESPONSIBLE AGENCY: Forestry Corporation of NSW
UPDATED: 27 Aug 2026 09:45

Official source

Forestry Plantation HR - Watagan 18 SF130 km away · Under control · Hazard ReductionNSW Rural Fire Service

Agency report details

ALERT LEVEL: Planned Burn
LOCATION: WATAGAN STATE FOREST WOLLOMBI FOREST RD, OLNEY 2325
COUNCIL AREA: Cessnock
STATUS: Under control
TYPE: Hazard Reduction
FIRE: Yes
SIZE: 6 ha
RESPONSIBLE AGENCY: Forestry Corporation of NSW
UPDATED: 27 Aug 2026 09:54

Official source

Forestry Plantation HR - OLNEY SF 077-078134 km away · Under control · Hazard ReductionNSW Rural Fire Service

Agency report details

ALERT LEVEL: Planned Burn
LOCATION: BEAVENS RIDGE FOREST RD, RAVENSDALE 2259
COUNCIL AREA: Central Coast
STATUS: Under control
TYPE: Hazard Reduction
FIRE: Yes
SIZE: 86 ha
RESPONSIBLE AGENCY: Forestry Corporation of NSW
UPDATED: 27 Aug 2026 09:55

Official source

Straight-line distance from the Merriwa monitor to the reported incident location, or to the mapped fire boundary where an agency has published one. A fire without a published boundary may extend closer than its reported location suggests.

Recent observations and next 48 hours

monitor + up to three models

About this chart

Observed values come from this monitor. NASA GEOS-CF, CAMS and SILAM are independent total surface PM2.5 research forecasts sampled from their nearest grid cells; they are not blended with the observations.

Forecast

Next 6 hoursGood5.3–9.8 µg/m³ · 3 of 3 models

Next 12 hoursFair8.9–13.8 µg/m³ · 3 of 3 models

Next 24 hoursFair11.5–15.7 µg/m³ · 3 of 3 models

Next 48 hoursFair11.5–15.7 µg/m³ · 3 of 3 models

Model detail3 available · 48-hour peak table

Model	48-hour peak	Category	Peak around
NASA GEOS-CF	14.4 µg/m³	Fair	28 Aug, 7:30 AM AEST
CAMS	15.7 µg/m³	Fair	28 Aug, 5:00 AM AEST
FMI SILAM	11.5 µg/m³	Good	27 Aug, 11:00 PM AEST

Recent hourly readings38 stored

Observed local	PM2.5 µg/m³	Air quality
27 Aug, 9:00 AM AEST	7.5	Good
27 Aug, 8:00 AM AEST	4.8	Good
27 Aug, 7:00 AM AEST	5.1	Good
27 Aug, 6:00 AM AEST	5.2	Good
27 Aug, 5:00 AM AEST	5.4	Good
27 Aug, 4:00 AM AEST	4.0	Good
27 Aug, 3:00 AM AEST	3.9	Good
27 Aug, 2:00 AM AEST	6.5	Good
27 Aug, 1:00 AM AEST	6.5	Good
27 Aug, 12:00 AM AEST	6.4	Good
26 Aug, 11:00 PM AEST	3.5	Good
26 Aug, 10:00 PM AEST	3.4	Good
26 Aug, 9:00 PM AEST	7.0	Good
26 Aug, 8:00 PM AEST	8.3	Good
26 Aug, 7:00 PM AEST	6.1	Good
26 Aug, 6:00 PM AEST	2.7	Good
26 Aug, 5:00 PM AEST	2.2	Good
26 Aug, 4:00 PM AEST	0.9	Good
26 Aug, 3:00 PM AEST	0.8	Good
26 Aug, 11:00 AM AEST	0.7	Good
26 Aug, 7:00 AM AEST	0.8	Good
26 Aug, 4:00 AM AEST	1.6	Good
26 Aug, 3:00 AM AEST	3.2	Good
26 Aug, 2:00 AM AEST	1.8	Good
26 Aug, 1:00 AM AEST	6.9	Good
26 Aug, 12:00 AM AEST	3.5	Good
25 Aug, 11:00 PM AEST	2.0	Good
25 Aug, 9:00 PM AEST	2.9	Good
25 Aug, 8:00 PM AEST	2.3	Good
25 Aug, 7:00 PM AEST	3.3	Good
25 Aug, 6:00 PM AEST	6.6	Good
25 Aug, 5:00 PM AEST	7.2	Good
25 Aug, 4:00 PM AEST	7.7	Good
25 Aug, 3:00 PM AEST	2.8	Good
25 Aug, 2:00 PM AEST	3.7	Good
25 Aug, 1:00 PM AEST	2.5	Good
25 Aug, 12:00 PM AEST	3.7	Good
25 Aug, 11:00 AM AEST	3.4	Good

Nearby government monitors

same jurisdiction

Wybong24.2 µg/m³ PM1022 km away · NSW DCCEEW Aberdeen19.9 µg/m³ PM1040 km away · NSW DCCEEW Muswellbrook Nw24.2 µg/m³ PM1042 km away · NSW DCCEEW Muswellbrook2.8 µg/m³ PM2.543 km away · NSW DCCEEW Jerrys Plains25.3 µg/m³ PM1054 km away · NSW DCCEEW Camberwell11.4 µg/m³ PM2.571 km away · NSW DCCEEW