What's the air quality in South Northamptonshire? NO₂ 8.5 µg/m³

In 2025 the average resident of South Northamptonshire lived with background NO₂ of 8.5 µg/m³, High for England and Wales and below the WHO guideline of 10. PM2.5 was 8.0 µg/m³, High for England and Wales and 1.6 times the WHO guideline of 5. The typical area in England and Wales has NO₂ of 7.2 and PM2.5 of 7.4 µg/m³.

PM2.5
8.0 µg/m³
NO₂ for England and Wales
High
Figures for
2025 annual average

Modelled background levels averaged over where residents live (Census 2021), not roadside levels. Contains public sector information licensed under the Open Government Licence v3.0. Source: Defra modelled background pollution, 2025. How we calculate this

All house prices in South Northamptonshire
Lower Higher

Is the air quality good in South Northamptonshire?

Background NO₂ in South Northamptonshire is 8.5 µg/m³, below the WHO guideline of 10, and higher than the typical area (7.2). That puts it in the High band. Background PM2.5 in South Northamptonshire is 8.0 µg/m³, 1.6 times the WHO guideline of 5, and higher than the typical area (7.4). That puts it in the High band. Most of England and Wales is above the WHO guideline for PM2.5, so the bands compare places with each other rather than giving a pass or fail.

Nitrogen dioxide (NO₂): 8.5 µg/m³

NO₂ level is High, on a scale from Very Low to Very High.

High means the second-highest fifth of areas in England and Wales for NO₂.

NO₂ bands for areas in England and Wales, in µg/m³, with the map colour for each
Very Lowup to 4.7
Low4.7 to 6.5
Typical6.5 to 7.7
High7.7 to 9.2
Very Highover 9.2

WHO guideline: 10 µg/m³ (in the Very High band). UK legal limit: 40 µg/m³.

Fine particles (PM2.5): 8.0 µg/m³

PM2.5 level is High, on a scale from Very Low to Very High.

High means the second-highest fifth of areas in England and Wales for PM2.5.

PM2.5 bands for areas in England and Wales, in µg/m³, with the map colour for each
Very Lowup to 6.0
Low6.0 to 7.2
Typical7.2 to 7.7
High7.7 to 8.2
Very Highover 8.2

WHO guideline: 5 µg/m³ (in the Very Low band). UK legal limit: 20 µg/m³, with a target of 10 µg/m³ in England by 2040.

The bands split every area we cover into fifths by its level, from Very Low to Very High. The map uses the same colours.

Which part of South Northamptonshire has the cleanest air?

Adstone has the lowest background NO₂ of the 77 areas of South Northamptonshire, at 6.6 µg/m³. Upper Heyford has the highest, at 11.1 µg/m³. Average house prices are shown alongside, so you can weigh air quality against cost.

Areas of South Northamptonshire by background NO₂, lowest first, with PM2.5 and average house price
AreaNO₂PM2.5Average price
AdstoneTypical6.67.5£975,000
MaidfordTypical6.77.5—
Moreton PinkneyTypical6.77.5£308,750
EydonTypical6.77.5£630,000
CulworthTypical6.87.5£273,000
SulgraveTypical6.87.5£353,666
Weston and WeedonTypical6.97.6£481,666
WoodendTypical6.97.6£901,250
BlakesleyTypical6.97.6£445,000
BoddingtonTypical7.07.5£514,428
LitchboroughTypical7.07.6£389,500
Thorpe MandevilleTypical7.07.6—
WappenhamTypical7.17.7£425,000
HelmdonTypical7.17.7£597,230
Aston le WallsTypical7.17.6£446,650
SlaptonTypical7.27.6—
Greatworth and HalseTypical7.27.6£439,366
AbthorpeTypical7.27.6£346,785
BraddenTypical7.27.6£860,000
Marston St. LawrenceTypical7.37.6£276,000
WhittleburyTypical7.57.8£509,800
Chipping Warden and EdgcoteTypical7.57.6£453,400
RadstoneTypical7.57.8£377,000
Cold HighamTypical7.57.7£705,000
AldertonTypical7.67.9—
Hinton-in-the-HedgesTypical7.77.7£617,333
PaulerspuryTypical7.77.8£547,581
NewbottleTypical7.77.7£218,750
Greens NortonTypical7.77.8£409,690
WickenHigh7.78.0£394,000
PattishallHigh7.97.8£339,720
SyreshamHigh7.97.8£511,050
ChacombeHigh7.97.8£378,775
ThenfordHigh7.97.7—
CroughtonHigh7.97.8£470,416
FarthinghoeHigh8.07.7£662,200
ShutlangerHigh8.07.9£410,000
Yardley HastingsHigh8.07.8£429,850
Yardley GobionHigh8.08.0£410,638
TiffieldHigh8.07.9£327,500
PotterspuryHigh8.18.0£401,767
DeanshangerHigh8.18.1£399,032
EvenleyHigh8.27.9£668,571
DentonHigh8.27.8£353,187
Grafton RegisHigh8.27.9—
Stoke BruerneHigh8.37.9£427,600
WhitfieldHigh8.38.0£473,250
AshtonHigh8.37.9£541,666
Easton NestonHigh8.37.9£680,000
AynhoHigh8.47.9£531,227
GaytonHigh8.48.0£434,000
SilverstoneHigh8.47.8£430,052
BrackleyHigh8.48.0£347,424
CosgroveHigh8.48.0£654,388
Middleton CheneyHigh8.57.8£410,502
Nether HeyfordHigh8.58.0£373,466
BugbrookeHigh8.68.0£326,795
RoadeHigh8.68.0£347,340
King's SuttonHigh8.77.9£509,468
TowcesterHigh8.78.0£333,509
HackletonHigh8.88.0£452,705
WarkworthHigh8.88.0—
BlisworthHigh8.98.1£334,823
Brafield on the GreenHigh9.07.9£436,901
OverthorpeHigh9.08.0£1,135,000
Old StratfordHigh9.08.1£416,321
HartwellVery High9.28.2£372,374
QuintonVery High9.38.2£270,000
HarpoleVery High9.58.2£421,504
Cogenhoe and WhistonVery High9.68.0£391,117
Little HoughtonVery High9.78.1£482,593
Milton MalsorVery High10.08.4£442,106
RothersthorpeVery High10.38.3£393,285
KislingburyVery High10.38.3£407,168
CourteenhallVery High10.68.3£1,800,000
Grange ParkVery High10.78.5£307,084
Upper HeyfordVery High11.18.4£570,000

Levels in µg/m³, 2025 annual average.

How does air quality in South Northamptonshire compare with nearby areas?

Background NO₂ in South Northamptonshire compared with the 6 nearest other areas in West Northamptonshire.

Compare South Northamptonshire with a different area

Does this include busy roads?

No. These are background levels: yearly averages over 1 km squares, away from the immediate influence of roads. Right beside a busy road in South Northamptonshire, NO₂ can be much higher. Councils publish roadside monitoring in their annual air quality reports.

What else do people ask about South Northamptonshire?

More quick answers on house prices, sales, areas, green space, crime, air quality and listed buildings in South Northamptonshire.

Where does this data come from?

Price information is from HM Land Registry, location boundaries are from OpenStreetMap, and households and population are from Nomis Census 2021 postcode estimates (21 March 2021). Parks and green space are from OS Open Greenspace. Contains OS data © Crown copyright and database right 2026. Crime is from police.uk street-level data. Contains public sector information licensed under the Open Government Licence v3.0. Source: police.uk. Listed buildings and scheduled monuments are from Historic England and Cadw, and conservation areas from planning.data.gov.uk. © Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. Source: planning.data.gov.uk, Open Government Licence v3.0. Air quality is from Defra modelled background pollution maps. Contains public sector information licensed under the Open Government Licence v3.0. Source: Defra modelled background pollution, 2025.

Last updated 11 November 2026 at 01:38 with the latest Land Registry data (September 2026). The South Northamptonshire dataset covers 3,462 postcodes.

Read our full data methodology

Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0.

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