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What’s screened

Air quality at a property

Modelled nitrogen dioxide and fine-particulate levels around the property, set against the legal objectives.

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About this data

What the report shows
Modelled annual-average nitrogen dioxide (NO2) and fine particulates (PM2.5) for the 1 km square around the property, from DEFRA’s Pollution Climate Mapping model.
What it’s compared with
The UK annual-mean objectives: 40 µg/m³ for NO2 and 20 µg/m³ for PM2.5. The World Health Organization’s 2021 guidelines are stricter, at 10 and 5 µg/m³.
Example
The sample report for Rothley shows NO2 at 11 µg/m³ and PM2.5 at 7 µg/m³, well within both objectives.
Sample report page with amenities, schools, air quality and broadband
Air quality, schools and broadband in the sample report.

What it can’t tell you

These are modelled background levels across a 1 km square. Right beside a busy road or junction, levels can be noticeably higher. If the property fronts a main road, check whether the council has declared an Air Quality Management Area nearby and whether it publishes roadside monitoring results.

Air quality is also separate from radon, which is a natural ground gas that can build up indoors and is reported in its own section.

Questions we get asked

Why doesn’t the report give a rating for air quality?

It reports the figures against the objectives rather than a risk band, because background levels vary little within a square and roadside levels aren’t modelled.

How current is the data?

DEFRA publishes the modelled maps some time after the year they describe, so treat the figures as a background guide rather than a current reading.

Is poor air quality a reason not to buy?

That’s a personal judgement. The figures help you compare properties on a like-for-like basis.

One address, one clear report

See the flood & environmental picture for your property

Every open flood source, plus ground, environment, value and context — a plain-English PDF report for the exact plot you draw, for £20.

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