Air quality in New Hampshire
Air quality index (AQI⁺) and PM2.5 air pollution in New Hampshire • 12:30, Oct 08
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?
- Alstead47
- Chesterfield36
- Peterborough32
- Portsmouth32
- Londonderry30
- Hooksett28
- Effingham27
- Hanover25
- Gilford23
- Barnstead22
- Laconia22
- Hillsborough21
- Keene21
- Franconia19
- Sutton19
- Bow18
- Center Harbor18
- Manchester18
- Pembroke18
- Meredith15
- Bethlehem14
- Dover14
- Campton13
- Canterbury13
- Nashua13
- Pittsburg13
- Grafton County12
- Troy12
- Brookline11
- Newton10
- Alexandria9
- Allenstown9
- Alton9
- Andover9
- Antrim9
- Ashland9
- Auburn9
- Belknap9
- Belmont9
- Bennington9
- Berlin9
- Blodgett Landing9
- Boscawen9
- Bradford9
- Bristol9
- Candia9
- Carroll9
- Charlestown9
- Cheshire9
- Chester9
- Chichester9
- Claremont9
- Colebrook9
- Concord9
- Contoocook9
- Danbury9
- Deering9
- Derry9
- Dublin9
- Dummer9
- Dunbarton9
- East Merrimack9
- Enfield9
- Epsom9
- Farmington9
- Fitzwilliam9
- Francestown9
- Franklin9
- Freedom9
- Gilmanton9
- Goffstown9
- Gorham9
- Grantham9
- Greens9
- Greenville9
- Groveton9
- Harrisville9
- Haverhill9
- Henniker9
- Hill9
- Hinsdale9
- Holderness9
- Hollis9
- Hopkinton9
- Hudson9
- Jaffrey9
- Jefferson9
- Klondike Corner9
- Lancaster9
- Lebanon9
- Lempster9
- Litchfield9
- Littleton9
- Loudon9
- Lyme9
- Lyndeborough9
- Madison9
- Marlborough9
- Mason9
- Merrimack9
- Milan9
- Milford9
- Milton9
- Moultonborough9
- New Boston9
- New Hampton9
- New Ipswich9
- New London9
- Newbury9
- Newport9
- North Conway9
- Northfield9
- Northwood9
- Nottingham9
- Ossipee9
- Pelham9
- Pinardville9
- Pittsfield9
- Plymouth9
- Raymond9
- Rindge9
- Rumney9
- Salisbury9
- South Hooksett9
- Springfield9
- Stratford9
- Sullivan9
- Suncook9
- Swanzey9
- Tamworth9
- Temple9
- Thornton9
- Tilton9
- Tilton Northfield9
- Tuftonboro9
- Wakefield9
- Walpole9
- Warner9
- Weare9
- Webster9
- West Swanzey9
- Whitefield9
- Wilmot9
- Wilton9
- Winchester9
- Windham9
- Wolfeboro9
- Woodsville9
- Atkinson8
- Danville8
- Epping8
- Fremont8
- Hampstead8
- Lincoln8
- Plaistow8
- Sandown8
- Sandwich8
- Strafford8
- Brentwood7
- Conway7
- Kingston7
- Lee7
- Rochester7
- Rockingham7
- Durham6
- East Kingston6
- Exeter6
- Hampton6
- Hampton Beach6
- Kensington6
- Madbury6
- New Castle6
- Newfields6
- Newmarket6
- North Hampton6
- Randolph6
- Rollinsford6
- Rye6
- Seabrook6
- Somersworth6
- Stratham6
- Warren6
- Amherst4
- Woodstock4
- Salem2
- Hampton Falls0
