Air quality in New Hampshire
Air quality index (AQI⁺) and PM2.5 air pollution in New Hampshire • 22:49, 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?
- Portsmouth37
- Rye36
- Londonderry35
- Nashua32
- Peterborough31
- Keene28
- Laconia26
- Woodstock23
- Center Harbor22
- Hooksett22
- Pittsburg22
- Dover21
- Grafton County21
- Greens21
- Meredith21
- Pembroke21
- Bethlehem20
- Barnstead19
- Concord19
- Franconia18
- Gilford18
- New Hampton18
- Chesterfield17
- Conway17
- Sutton17
- Manchester16
- Hillsborough15
- Troy15
- Campton13
- Colebrook13
- Dummer13
- Groveton13
- Lancaster13
- Northumberland13
- Stratford13
- Barrington12
- Berlin12
- Bow12
- Carroll12
- Freedom12
- Gorham12
- Haverhill12
- Jefferson12
- Littleton12
- Lyme12
- Madison12
- Milan12
- North Conway12
- Ossipee12
- Pelham12
- Rumney12
- Tamworth12
- Thornton12
- Whitefield12
- Woodsville12
- Brookline11
- Canterbury11
- East Kingston11
- Effingham11
- Hanover11
- Holderness11
- Kensington11
- Moultonborough11
- Seabrook11
- Tuftonboro11
- Wakefield11
- Alexandria10
- Allenstown10
- Alton10
- Andover10
- Antrim10
- Ashland10
- Atkinson10
- Auburn10
- Belknap10
- Belmont10
- Bennington10
- Blodgett Landing10
- Boscawen10
- Bradford10
- Brentwood10
- Bristol10
- Candia10
- Charlestown10
- Cheshire10
- Chester10
- Chichester10
- Claremont10
- Contoocook10
- Danbury10
- Danville10
- Deering10
- Derry10
- Dublin10
- Dunbarton10
- Durham10
- East Merrimack10
- Enfield10
- Epping10
- Epsom10
- Farmington10
- Fitzwilliam10
- Francestown10
- Franklin10
- Fremont10
- Gilmanton10
- Goffstown10
- Grantham10
- Greenville10
- Hampstead10
- Hampton10
- Hampton Beach10
- Harrisville10
- Henniker10
- Hill10
- Hinsdale10
- Hollis10
- Hopkinton10
- Hudson10
- Jaffrey10
- Kingston10
- Klondike Corner10
- Lebanon10
- Lee10
- Lempster10
- Litchfield10
- Loudon10
- Lyndeborough10
- Madbury10
- Marlborough10
- Mason10
- Merrimack10
- Milford10
- Milton10
- New Boston10
- New Ipswich10
- New London10
- Newbury10
- Newfields10
- Newmarket10
- Newport10
- North Hampton10
- Northfield10
- Northwood10
- Nottingham10
- Pinardville10
- Pittsfield10
- Plaistow10
- Plymouth10
- Raymond10
- Rindge10
- Rochester10
- Rockingham10
- Rollinsford10
- Salisbury10
- Sandown10
- Somersworth10
- South Hooksett10
- Springfield10
- Strafford10
- Stratham10
- Sullivan10
- Suncook10
- Swanzey10
- Temple10
- Tilton10
- Tilton Northfield10
- Walpole10
- Warner10
- Weare10
- Webster10
- West Swanzey10
- Wilmot10
- Wilton10
- Winchester10
- Windham10
- Wolfeboro10
- Alstead9
- Exeter9
- New Castle9
- Sandwich9
- Warren9
- Randolph8
- Newton7
- Lincoln6
- Hampton Falls4
- Amherst2
- Salem2
