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Air quality in New Hampshire
Air quality index (AQI) and PM2.5 air pollution in New Hampshire
AIR QUALITY DATA CONTRIBUTORS
34 Contributors
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LIVE AQI CITY RANKING
Real-time New Hampshire
Cleanest city ranking
| # | city | US AQI |
|---|---|---|
| 1 |  Salem | 5 |
| 2 | Brentwood | 6 |
| 3 | Troy | 6 |
| 4 | Barrington | 7 |
| 5 | Wilton | 8 |
| 6 | Barnstead | 14 |
| 7 | Dover | 14 |
| 8 | Londonderry | 15 |
| 9 | Effingham | 16 |
| 10 | Hooksett | 17 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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News
The latest air quality news and resources.
New Hampshire air quality data attribution
34Contributors
Government Contributor
- water1998
1 station
Non-profit organization Contributor
- 30 Anonymous contributors
30 stations
30 Anonymous Contributors
Which is the most polluted city in New Hampshire?
- Meredith 43
- Concord 32
- Deerfield 32
- Colebrook 30
- Littleton 30
- Berlin 29
- Gorham 29
- Groveton 29
- Haverhill 29
- Jackson 29
- Jefferson 29
- Lancaster 29
- Milan 29
- Nashua 29
- North Haverhill 29
- Northumberland 29
- Randolph 29
- Stratford 29
- Whitefield 29
- Woodsville 29
- Enfield 28
- Hanover 28
- Lebanon 28
- Lyme 28
- North Woodstock 28
- Orford 28
- Plymouth 28
- Rumney 28
- Thornton 28
- Woodstock 28
- Alexandria 27
- Alstead 27
- Ashland 27
- Bridgewater 27
- Bristol 27
- Charlestown 27
- Claremont 27
- Danbury 27
- Grafton 27
- Grantham 27
- Holderness 27
- Lempster 27
- New London 27
- Newbury 27
- Newport 27
- North Conway 27
- Springfield 27
- Sunapee 27
- Sutton 27
- Unity 27
- Westmoreland 27
- Andover 26
- Center Harbor 26
- Fitzwilliam 26
- Harrisville 26
- Hill 26
- Hinsdale 26
- Marlborough 26
- Moultonborough 26
- Richmond 26
- Swanzey 26
- Tamworth 26
- West Swanzey 26
- Wilmot 26
- Winchester 26
- Antrim 25
- Contoocook 25
- Deering 25
- Dublin 25
- Franklin 25
- Henniker 25
- Hillsborough 25
- Jaffrey 25
- Laconia 25
- Madison 25
- Northfield 25
- Rindge 25
- Salisbury 25
- Sanbornton 25
- Tilton 25
- Tilton-Northfield 25
- Tuftonboro 25
- Webster 25
- Belmont 24
- Boscawen 24
- Canterbury 24
- East Concord 24
- Francestown 24
- Freedom 24
- Gilmanton 24
- Greenfield 24
- Hopkinton 24
- Ossipee 24
- Temple 24
- Weare 24
- Wolfeboro 24
- Greenville 23
- Keene 23
- Lyndeborough 23
- Mont Vernon 23
- New Boston 23
- New Ipswich 23
- Sandwich 23
- Bow Bog 22
- Chesterfield 22
- Chichester 22
- Conway 22
- Gilford 22
- Goffstown 22
- Mason 22
- Milford 22
- Pittsfield 22
- Allenstown 21
- Bedford 21
- Epsom 21
- New Durham 21
- Pembroke 21
- Peterborough 21
- Pinardville 21
- Rye 21
- Sanbornville 21
- Wakefield 21
- West Lebanon 21
- East Merrimack 20
- Hollis 20
- Manchester 20
- Merrimack 20
- South Hooksett 20
- Strafford 20
- Auburn 19
- Candia 19
- Farmington 19
- Hudson 19
- Litchfield 19
- Northwood 19
- Suncook 19
- Brookline 18
- Chester 18
- Derry 18
- Derry Village 18
- Portsmouth 18
- Rochester 18
- Hooksett 17
- Nottingham 17
- Pelham 17
- Raymond 17
- Windham 17
- Effingham 16
- Epping 16
- Fremont 16
- Hampstead 16
- Lee 16
- Sandown 16
- Danville 15
- Londonderry 15
- Madbury 15
- Somersworth 15
- Atkinson 14
- Barnstead 14
- Dover 14
- Durham 14
- Kingston 14
- Newmarket 14
- Rollinsford 14
- East Kingston 13
- Plaistow 13
- Stratham Station 13
- Exeter 12
- Greenland 12
- Newton 12
- Kensington 11
- New Castle 11
- North Hampton 11
- Hampton 10
- Hampton Beach 10
- Hampton Falls 10
- Seabrook 10
- Wilton 8
- Barrington 7
- Brentwood 6
- Troy 6
- Salem 5
AQI US, Metric