Air quality in New Hampshire
Air quality index (AQI⁺) and PM2.5 air pollution in New Hampshire • 15:50, Oct 17
Live most polluted city ranking
Real-time New Hampshire most polluted city ranking
Wildfires in New Hampshire
Real-time information
Active fires
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Learn more about global air quality
Which is the most polluted city in New Hampshire?
- Londonderry23
- Peterborough22
- Keene19
- Portsmouth19
- Woodstock18
- Brookline13
- Chesterfield13
- Sutton13
- Barrington12
- Exeter12
- Lincoln12
- Pembroke12
- Warren12
- Allenstown11
- Amherst11
- Andover11
- Antrim11
- Atkinson11
- Auburn11
- Bennington11
- Blodgett Landing11
- Boscawen11
- Bradford11
- Brentwood11
- Candia11
- Charlestown11
- Cheshire11
- Chester11
- Chichester11
- Claremont11
- Concord11
- Contoocook11
- Danbury11
- Danville11
- Deering11
- Derry11
- Dover11
- Dublin11
- Dunbarton11
- East Kingston11
- East Merrimack11
- Enfield11
- Epping11
- Epsom11
- Fitzwilliam11
- Francestown11
- Franconia11
- Fremont11
- Goffstown11
- Grantham11
- Greenville11
- Hampstead11
- Harrisville11
- Henniker11
- Hinsdale11
- Hollis11
- Hooksett11
- Hopkinton11
- Hudson11
- Jaffrey11
- Kensington11
- Kingston11
- Klondike Corner11
- Lebanon11
- Lempster11
- Litchfield11
- Loudon11
- Lyndeborough11
- Marlborough11
- Mason11
- Merrimack11
- Milford11
- Nashua11
- New Boston11
- New Ipswich11
- New London11
- Newbury11
- Newport11
- Northwood11
- Nottingham11
- Pinardville11
- Pittsfield11
- Plaistow11
- Raymond11
- Rindge11
- Rockingham11
- Salisbury11
- Sandown11
- South Hooksett11
- Springfield11
- Sullivan11
- Suncook11
- Swanzey11
- Temple11
- Walpole11
- Warner11
- Weare11
- Webster11
- West Swanzey11
- Wilmot11
- Wilton11
- Winchester11
- Windham11
- Hampton10
- Hanover10
- Newfields10
- Seabrook10
- Stratham10
- Alexandria9
- Durham9
- Franklin9
- Gilmanton9
- Grafton County9
- Hampton Beach9
- Hill9
- Laconia9
- Lee9
- Lyme9
- Newmarket9
- North Hampton9
- Northfield9
- Rye9
- Salem9
- Tilton Northfield9
- Alton8
- Ashland8
- Belknap8
- Belmont8
- Berlin8
- Bethlehem8
- Bristol8
- Carroll8
- Conway8
- Farmington8
- Freedom8
- Gorham8
- Groveton8
- Haverhill8
- Holderness8
- Jefferson8
- Lancaster8
- Littleton8
- Madbury8
- Madison8
- Manchester8
- Milan8
- Milton8
- Moultonborough8
- New Castle8
- New Hampton8
- North Conway8
- Ossipee8
- Plymouth8
- Rochester8
- Rollinsford8
- Rumney8
- Somersworth8
- Strafford8
- Tamworth8
- Thornton8
- Tilton8
- Tuftonboro8
- Wakefield8
- Whitefield8
- Wolfeboro8
- Woodsville8
- Bow7
- Hampton Falls7
- Hillsborough7
- Meredith7
- Stratford7
- Center Harbor6
- Colebrook6
- Dummer6
- Greens6
- Newton6
- Northumberland6
- Sandwich6
- Barnstead4
- Campton4
- Pelham4
- Alstead3
- Canterbury3
- Gilford3
- Troy2
- Randolph1
- Effingham0
- Pittsburg0
