Acid Rain
United StatesPhysical EnvironmentAverage acidity of precipitation in the United States. Lower pH values represent greater acidity.
Geosystems: Intro to Physical Geography
A map shows the p H levels of acid rain in the U.S. States like Ohio and Pennsylvania have the lowest p H levels (4.50 to 4.59 p H, black). States like Arizona and Nevada show the highest p H levels (greater than or equals 5.30 p H, light yellow).
4.50–4.59 pH | 4.60–4.69 pH | 4.70–4.79 pH | 4.80–4.89 pH | 4.90–4.99 pH | 5.00–5.09 pH | 5.10–5.19 pH | 5.20–5.29 pH | ≥5.30 pH | Phosphate Mines | No Data | Very Low | Low | Moderately Low | Moderate | Moderately High | High | Very High | Extremely High | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Alaska | 0.220% | 0.183% | 1.08% | 0.155% | 0.137% | 1.29% | 0.106% | ||||||||||||
Arizona | 1.23% | 98.8% | 0.139% | 10.8% | |||||||||||||||
Utah | 1.69% | 98.3% | 7 | 0.376% | 0.196% | 39.2% | |||||||||||||
Yukon | 0.795% | 1.20% | 10.9% | 14.8% | 9.73% | ||||||||||||||
Northwest Territories | 1.90% | 10.9% | 5.41% | 21.2% | 8.33% | 0.275% | 0.935% | ||||||||||||
District of Columbia | 100% | 100% | |||||||||||||||||
Florida | 1.32% | 13.8% | 25.9% | 40 | 0.355% | 80.3% | |||||||||||||
Idaho | 4.63% | 95.4% | 6 | 0.401% | 1.00% | 8.30% | |||||||||||||
New Hampshire | 72.0% | 27.9% | 80.8% | 16.8% | |||||||||||||||
Rhode Island | 2.00% | 3.88% | 94.9% | ||||||||||||||||
Vermont | 95.7% | 4.07% | 0.314% | 1.37% | |||||||||||||||
Washington | 23.4% | 70.9% | 8.97% | 9.78% | 0.487% | 0.874% | |||||||||||||
Wyoming | 100% | 1 | 0.273% | 44.8% | 4.05% | ||||||||||||||
Nunavut | 0.968% | 0.100% | 0.238% | 3.40% | |||||||||||||||
Montana | 9.26% | 90.7% | 12 | 0.729% | 0.291% | 1.69% | |||||||||||||
Maine | 17.3% | 69.8% | 10.8% | 82.9% | 16.3% | ||||||||||||||
North Dakota | 100% | 9.96% | |||||||||||||||||
Kentucky | 1.72% | 54.3% | 1.61% | 9.53% | 0.803% | ||||||||||||||
Nova Scotia | 4.31% | 0.376% | 7.89% | ||||||||||||||||
Virginia | 3.50% | 1.66% | 15.4% | 6.11% | |||||||||||||||
Delaware | 17.4% | 81.8% | 21.0% | ||||||||||||||||
Prince Edward Island | 91.5% | ||||||||||||||||||
Saskatchewan | 0.919% | 28.6% | 8.52% | 1.02% | 0.695% | ||||||||||||||
Mississippi | 14.3% | 79.0% | 5.27% | 18.5% | |||||||||||||||
West Virginia | 7.63% | 45.0% | 12.8% | 8.92% | 21.1% | ||||||||||||||
Nebraska | 100% | 29.9% | 30.0% | ||||||||||||||||
Texas | 8.53% | 1.49% | 4.74% | 5.19% | 56.4% | 5 | 0.168% | 8.05% | |||||||||||
Missouri | 26.1% | 26.9% | 12.0% | 34.2% | 5.67% | ||||||||||||||
Louisiana | 41.6% | 42.5% | 8.80% | 4.48% | 2.23% | 4 | 0.187% | ||||||||||||
Hawaii | 0.296% | 0.586% | 1.76% | 0.911% | |||||||||||||||
North Carolina | 1.35% | 37.2% | 1.72% | 9.88% | 3 | 42.1% | |||||||||||||
Oregon | 2.68% | 97.3% | 11.5% | 0.302% | 25.8% | 0.243% | |||||||||||||
New Brunswick | 3.39% | 0.324% | 35.6% | ||||||||||||||||
Alabama | 84.6% | 13.4% | 2 | 17.9% | |||||||||||||||
New Mexico | 4.15% | 91.3% | 3.80% | 24.3% | |||||||||||||||
Kansas | 100% | 12.6% | 48.2% | ||||||||||||||||
Wisconsin | 4.01% | 46.8% | 27.3% | 21.3% | 0.259% | 0.247% | |||||||||||||
British Columbia | 0.147% | 1.12% | 0.594% | 2.88% | 2.80% | 3.66% | 10.6% | ||||||||||||
Newfoundland and Labrador | 5.13% | 0.109% | 0.201% | 1.56% | |||||||||||||||
New Jersey | 5.98% | 36.6% | 32.6% | 23.7% | 1.93% | 0.357% | |||||||||||||
South Carolina | 33.6% | 64.2% | 2.08% | 58.8% | |||||||||||||||
Michigan | 24.0% | 10.0% | 4.73% | 13.3% | 1.39% | 0.144% | |||||||||||||
Alberta | 0.424% | 0.728% | 1.52% | 10.5% | 0.222% | 1.32% | 0.431% | ||||||||||||
Connecticut | 49.9% | 50.0% | 14.6% | 85.2% | |||||||||||||||
Pennsylvania | 3.58% | 34.8% | 29.1% | 10.8% | 1 | 33.7% | 0.565% | ||||||||||||
Colorado | 1.85% | 3.55% | 88.3% | 17.7% | 35.7% | ||||||||||||||
Nevada | 100% | 0.344% | 12.9% | 76.5% | |||||||||||||||
Massachusetts | 98.2% | 32.8% | 0.220% | ||||||||||||||||
Georgia | 7.01% | 3.21% | 2.51% | 3.47% | 0.544% | ||||||||||||||
New York | 4.25% | 52.6% | 35.3% | 0.690% | 33.9% | 0.977% | |||||||||||||
Maryland | 12.5% | 29.8% | 10.3% | 1.80% | |||||||||||||||
Québec | 1.02% | 2.36% | 2.98% | 1.97% | 1.83% | 1.52% | |||||||||||||
Manitoba | 0.786% | 11.3% | 36.2% | 21.9% | 0.653% | 4.68% | |||||||||||||
Oklahoma | 2.73% | 5.70% | 91.6% | 1.67% | 0.437% | ||||||||||||||
Tennessee | 5.63% | 19.5% | 14.5% | 3.55% | 30 | 2.12% | |||||||||||||
Ontario | 28.2% | 14.0% | 30.5% | 13.7% | 0.243% | ||||||||||||||
California | 99.7% | 2 | 0.438% | 1.08% | 5.44% | 13.5% | |||||||||||||
Arkansas | 17.5% | 40.8% | 7.44% | 10.2% | 25.3% | ||||||||||||||
South Dakota | 100% | 2.42% | 0.851% | 0.598% | |||||||||||||||
Ohio | 5.07% | 9.56% | 59.7% | 23.0% | 1 | 0.316% | 1.15% | 1.29% | |||||||||||
Indiana | 12.8% | 4.37% | 8.75% | 5.18% | 30.9% | ||||||||||||||
Minnesota | 2.86% | 4.42% | 92.3% | 11.2% | |||||||||||||||
Iowa | 1.50% | 98.5% | 1 | 10.5% | |||||||||||||||
Illinois | 39.9% | 27.0% | 15.0% | 3.08% | 9.73% | 0.259% | |||||||||||||
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