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Highest risk cities in Pennsylvania

Highest air quality risk cities in Pennsylvania

Ranked city list for poor air quality and smoke stress. Open any city to view local risk details and live outlook context.

State average

AQI score

43/100

Updated Tue, Aug 4, 1:41 AM.

Open air quality outlook Browse all PA cities

More state ranking pages

Highest overall weather risk cities Highest flood risk cities Highest wind risk cities Highest lightning risk cities Highest wildfire risk cities Highest tornado risk cities

National comparisons:

Which state has the highest hurricane risk? →Which states have the highest AQI risk? →Which states have the highest wildfire risk? →Safest states for severe weather →States with the lowest flood exposure →

Ranked cities

Top 25 cities by aqi score.

Open any city for full details

#1

Milton, PA

27 points above the state average

#2

South Williamsport, PA

27 points above the state average

#3

Williamsport, PA

27 points above the state average

#4

Sunbury, PA

9 points above the state average

#5

Bloomsburg, PA

7 points above the state average

#6

Ardmore, PA

3 points above the state average

#7

Bala Cynwyd, PA

3 points above the state average

#8

Morrisville, PA

3 points above the state average

#9

Clifton Heights, PA

1 points above the state average

#10

Collingdale, PA

1 points above the state average

#11

Columbia, PA

1 points above the state average

#12

Darby, PA

1 points above the state average

#13

East York, PA

1 points above the state average

#14

Elkins Park, PA

1 points above the state average

#15

Lancaster, PA

1 points above the state average

#16

Lansdowne, PA

1 points above the state average

#17

Lititz, PA

1 points above the state average

#18

Millersville, PA

1 points above the state average

#19

Penn Wynne, PA

1 points above the state average

#20

Philadelphia, PA

1 points above the state average

#21

Red Lion, PA

1 points above the state average

#22

Shiloh, PA

1 points above the state average

#23

Village Green-Green Ridge, PA

1 points above the state average

#24

Weigelstown, PA

1 points above the state average

#25

Willow Street, PA

1 points above the state average

How this ranking works

Rankings use HomeRiskIQ weather risk data and statewide score snapshots.

Scores are normalized to a 0-100 scale and shown against the state average for context.

City entries link to hazard-specific pages where available, otherwise to the city overview.