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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 |  Troy | 9 |
| 2 | Chesterfield | 20 |
| 3 | Barrington | 21 |
| 4 | Peterborough | 21 |
| 5 | West Lebanon | 23 |
| 6 | Hanover | 26 |
| 7 | Effingham | 27 |
| 8 | Hillsborough | 29 |
| 9 | Sutton | 29 |
| 10 | Conway | 31 |
(local time)
SEE WORLD AQI RANKING
3D animated air pollution map
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Moderate
Unhealthy for sensitive groups
Unhealthy
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Hazardous
New Hampshire air quality data attribution
34Contributors
Government Contributor
- water1998
1 station
Non-profit organization Contributor
- AirGradient
2 stations
Corporate Contributor
- 29 Anonymous contributors
29 stations
29 Anonymous Contributors
Which is the most polluted city in New Hampshire?
- Charlestown 62
- Claremont 62
- Enfield 62
- Haverhill 62
- Lebanon 62
- Lyme 62
- Orford 62
- Alstead 61
- Grafton 61
- Grantham 61
- Hinsdale 61
- Lempster 61
- New London 61
- Newbury 61
- Newport 61
- North Haverhill 61
- Springfield 61
- Sunapee 61
- Unity 61
- Westmoreland 61
- Woodsville 61
- Alexandria 60
- Andover 60
- Danbury 60
- Deerfield 60
- Dublin 60
- Fitzwilliam 60
- Harrisville 60
- Marlborough 60
- Richmond 60
- Rumney 60
- Swanzey 60
- West Swanzey 60
- Wilmot 60
- Winchester 60
- Antrim 59
- Bedford 59
- Bridgewater 59
- Bristol 59
- Contoocook 59
- Deering 59
- East Merrimack 59
- Francestown 59
- Goffstown 59
- Greenfield 59
- Greenville 59
- Henniker 59
- Hill 59
- Hollis 59
- Hopkinton 59
- Hudson 59
- Jaffrey 59
- Litchfield 59
- Lyndeborough 59
- Mason 59
- Merrimack 59
- Milford 59
- Mont Vernon 59
- Nashua 59
- New Boston 59
- New Ipswich 59
- Pelham 59
- Pinardville 59
- Plymouth 59
- Rindge 59
- Salisbury 59
- Temple 59
- Weare 59
- Webster 59
- Windham 59
- Allenstown 58
- Ashland 58
- Atkinson 58
- Auburn 58
- Belmont 58
- Boscawen 58
- Bow Bog 58
- Candia 58
- Canterbury 58
- Chester 58
- Chichester 58
- Danville 58
- Derry 58
- Derry Village 58
- Durham 58
- East Concord 58
- East Kingston 58
- Epping 58
- Epsom 58
- Exeter 58
- Franklin 58
- Fremont 58
- Gilmanton 58
- Greenland 58
- Hampstead 58
- Hampton 58
- Hampton Beach 58
- Hampton Falls 58
- Holderness 58
- Kensington 58
- Kingston 58
- Lee 58
- Madbury 58
- Manchester 58
- New Castle 58
- Newmarket 58
- Newton 58
- North Hampton 58
- North Woodstock 58
- Northfield 58
- Northwood 58
- Nottingham 58
- Pembroke 58
- Pittsfield 58
- Plaistow 58
- Raymond 58
- Rye 58
- Sanbornton 58
- Sandown 58
- Seabrook 58
- South Hooksett 58
- Stratham Station 58
- Tilton 58
- Tilton-Northfield 58
- Woodstock 58
- Center Harbor 57
- New Durham 57
- Rochester 57
- Rollinsford 57
- Somersworth 57
- Strafford 57
- Farmington 56
- Moultonborough 56
- Ossipee 56
- Sanbornville 56
- Tuftonboro 56
- Wakefield 56
- Wolfeboro 56
- Colebrook 55
- Whitefield 55
- Groveton 54
- Lancaster 54
- Northumberland 54
- Stratford 54
- Tamworth 54
- Jefferson 53
- Freedom 52
- Madison 52
- Sandwich 49
- North Conway 45
- Salem 45
- Suncook 45
- Thornton 44
- Dover 43
- Jackson 43
- Randolph 43
- Concord 41
- Milan 41
- Portsmouth 41
- Barnstead 40
- Berlin 40
- Gorham 40
- Brentwood 37
- Meredith 35
- Brookline 33
- Gilford 33
- Keene 33
- Littleton 33
- Conway 31
- Hooksett 31
- Laconia 31
- Londonderry 31
- Hillsborough 29
- Sutton 29
- Effingham 27
- Hanover 26
- West Lebanon 23
- Barrington 21
- Peterborough 21
- Chesterfield 20
- Troy 9
AQI US, Metric