Air quality in New Hampshire
Air quality index (AQI⁺) and PM2.5 air pollution in New Hampshire • 15:20, Sep 26
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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Which is the most polluted city in New Hampshire?
- Peterborough33
- Laconia31
- Portsmouth31
- Londonderry29
- Woodstock27
- Center Harbor26
- Franconia26
- Nashua26
- New Hampton26
- Bethlehem24
- Sutton24
- Gilford23
- Hanover23
- Campton22
- Dover22
- Manchester22
- Pembroke22
- Barnstead21
- Grafton County21
- Keene21
- Meredith21
- Pittsburg21
- Sandwich21
- Pelham20
- Chesterfield19
- Randolph19
- Hillsborough18
- Alstead17
- Hooksett17
- Newton17
- Northumberland17
- Bow16
- Canterbury16
- Brookline15
- Colebrook14
- Conway14
- Dummer14
- Hampton Falls14
- Milan14
- Troy14
- Berlin13
- Gorham13
- Groveton13
- Stratford13
- Greens12
- Jefferson12
- Lancaster12
- Warren12
- Alexandria11
- Allenstown11
- Alton11
- Andover11
- Ashland11
- Atkinson11
- Auburn11
- Belknap11
- Belmont11
- Blodgett Landing11
- Boscawen11
- Brentwood11
- Bristol11
- Candia11
- Carroll11
- Chester11
- Chichester11
- Concord11
- Contoocook11
- Danbury11
- Danville11
- Deering11
- Derry11
- Dunbarton11
- Durham11
- East Kingston11
- East Merrimack11
- Effingham11
- Enfield11
- Epping11
- Epsom11
- Exeter11
- Farmington11
- Francestown11
- Franklin11
- Freedom11
- Fremont11
- Gilmanton11
- Goffstown11
- Grantham11
- Hampstead11
- Hampton11
- Hampton Beach11
- Haverhill11
- Henniker11
- Hill11
- Holderness11
- Hollis11
- Hopkinton11
- Hudson11
- Kensington11
- Kingston11
- Klondike Corner11
- Lebanon11
- Lee11
- Litchfield11
- Littleton11
- Loudon11
- Lyme11
- Lyndeborough11
- Madbury11
- Madison11
- Merrimack11
- Milford11
- Milton11
- Moultonborough11
- New Boston11
- New Castle11
- New London11
- Newfields11
- Newmarket11
- North Conway11
- North Hampton11
- Northfield11
- Northwood11
- Nottingham11
- Ossipee11
- Pinardville11
- Pittsfield11
- Plaistow11
- Plymouth11
- Raymond11
- Rochester11
- Rockingham11
- Rollinsford11
- Rumney11
- Rye11
- Salisbury11
- Sandown11
- Seabrook11
- Somersworth11
- South Hooksett11
- Springfield11
- Strafford11
- Stratham11
- Suncook11
- Tamworth11
- Thornton11
- Tilton11
- Tilton Northfield11
- Tuftonboro11
- Wakefield11
- Warner11
- Weare11
- Webster11
- Whitefield11
- Wilmot11
- Windham11
- Wolfeboro11
- Woodsville11
- Barrington10
- Bennington10
- Bradford10
- Greenville10
- Lincoln10
- Mason10
- Newbury10
- Newport10
- Salem10
- Wilton10
- Antrim9
- Charlestown9
- Cheshire9
- Claremont9
- Dublin9
- Fitzwilliam9
- Harrisville9
- Jaffrey9
- Lempster9
- Marlborough9
- New Ipswich9
- Rindge9
- Sullivan9
- Swanzey9
- Temple9
- Walpole9
- West Swanzey9
- Hinsdale8
- Winchester8
- Amherst6
