Air quality in New Hampshire
Air quality index (AQI⁺) and PM2.5 air pollution in New Hampshire • 22:00, Aug 19
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?
- Portsmouth68
- Cheshire54
- Fitzwilliam54
- Hinsdale54
- Marlborough54
- Swanzey54
- Walpole54
- West Swanzey54
- Winchester54
- Dublin53
- Jaffrey53
- Rindge53
- Warren53
- Antrim52
- Charlestown52
- East Kingston52
- Hampton52
- Hampton Beach52
- Harrisville52
- Kensington52
- New Castle52
- New Ipswich52
- North Hampton52
- Plaistow52
- Seabrook52
- Stratham52
- Temple52
- Atkinson51
- Bennington51
- Blodgett Landing51
- Bradford51
- Brentwood51
- Claremont51
- Contoocook51
- Danville51
- Deering51
- Derry51
- Dunbarton51
- Durham51
- East Merrimack51
- Francestown51
- Freedom51
- Goffstown51
- Greenville51
- Hampstead51
- Henniker51
- Hollis51
- Hopkinton51
- Hudson51
- Kingston51
- Klondike Corner51
- Lempster51
- Litchfield51
- Lyndeborough51
- Madison51
- Mason51
- Merrimack51
- Milford51
- New Boston51
- New London51
- Newbury51
- Newfields51
- Newmarket51
- Newport51
- North Conway51
- Pinardville51
- Rollinsford51
- Sullivan51
- Warner51
- Weare51
- Webster51
- Wilton51
- Windham51
- Boscawen50
- Enfield50
- Fremont50
- Grantham50
- Lebanon50
- Madbury50
- Rockingham50
- Salisbury50
- Sandown50
- Somersworth50
- South Hooksett50
- Springfield50
- Wilmot50
- Allenstown49
- Andover49
- Auburn49
- Candia49
- Carroll49
- Chester49
- Danbury49
- Epping49
- Franklin49
- Lee49
- Pembroke49
- Raymond49
- Rochester49
- Suncook49
- Wakefield49
- Alexandria48
- Alton48
- Ashland48
- Belknap48
- Belmont48
- Bristol48
- Chichester48
- Epsom48
- Farmington48
- Gilmanton48
- Gorham48
- Haverhill48
- Hill48
- Holderness48
- Jefferson48
- Lancaster48
- Littleton48
- Loudon48
- Lyme48
- Milton48
- Moultonborough48
- Northfield48
- Northwood48
- Nottingham48
- Ossipee48
- Pittsfield48
- Plymouth48
- Rumney48
- Rye48
- Strafford48
- Tamworth48
- Thornton48
- Tilton48
- Tilton Northfield48
- Tuftonboro48
- Whitefield48
- Wolfeboro48
- Woodsville48
- Exeter47
- Groveton47
- Lincoln47
- Northumberland47
- Stratford47
- Colebrook46
- Dummer46
- Milan46
- Berlin44
- Londonderry38
- Amherst37
- Laconia37
- Newton37
- Nashua36
- Concord35
- Manchester35
- Pelham34
- Keene33
- Peterborough33
- Sutton33
- Dover32
- Gilford32
- Woodstock32
- Campton31
- Meredith31
- New Hampton31
- Center Harbor30
- Grafton County30
- Barnstead29
- Bow29
- Chesterfield29
- Franconia29
- Sandwich29
- Troy29
- Alstead28
- Bethlehem28
- Hanover28
- Hillsborough28
- Pittsburg28
- Randolph28
- Brookline27
- Canterbury27
- Hampton Falls27
- Conway22
- Effingham22
- Salem22
- Barrington21
- Greens18
- Hooksett17
