N.C. Department of Environment and Natural Resources
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Monitoring Data >> Latest Available Air Quality Index Readings

This table shows the current maximum Air Quality Index (AQI) readings representing the indicated Metropolitan Statistical Areas over the past 24 hours and may include data from yesterday. The supporting data have not been fully validated (more information).

The accompanying map highlights counties in which AQI pollutant monitors are located. The populations represented by these monitors may include other whole or partial surrounding counties.

Note: Air Quality standards for each pollutant are subject to revision by the Federal EPA about once every five years. Current data ranges and health advisory information are shown here.

This page was last updated on: Sat Apr 19 2014 12:00:00 AM EDT

Entries highlighted in boldface type represent the "critical pollutant" information.

Area AQI Responsible Pollutant Pollutant Concentration Color Code Air Quality Time of Maximum
ASHEVILLE 50 PARTICULATE MATTER(2.5) 12.0 µg/m3
GREEN
GOOD 4/18/14
9:00 PM
38 OZONE 45 ppb
GREEN
GOOD 4/18/14
6:00 PM
CHARLOTTE - GASTONIA - CONCORD - SALISBURY 42 PARTICULATE MATTER(2.5) 10.1 µg/m3
GREEN
GOOD 4/18/14
7:00 PM
36 OZONE 42 ppb
GREEN
GOOD 4/18/14
1:00 AM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 4/18/14
4:00 AM
FAYETTEVILLE 51 PARTICULATE MATTER(2.5) 12.1 µg/m3
YELLOW
MODERATE 4/18/14
9:00 PM
GREENVILLE 136 PARTICULATE MATTER(2.5) 49.9 µg/m3
ORANGE
UNHEALTHY FOR SENSITIVE GROUPS 4/18/14
7:00 AM
41 OZONE 48 ppb
GREEN
GOOD 4/18/14
5:00 PM
HICKORY - MORGANTON - LENOIR 45 PARTICULATE MATTER(2.5) 10.7 µg/m3
GREEN
GOOD 4/18/14
10:00 PM
RALEIGH - DURHAM - CHAPEL HILL 45 PARTICULATE MATTER(2.5) 10.9 µg/m3
GREEN
GOOD 4/18/14
12:00 AM
39 OZONE 46 ppb
GREEN
GOOD 4/18/14
1:00 AM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 4/18/14
8:00 AM
WILMINGTON 37 OZONE 44 ppb
GREEN
GOOD 4/18/14
1:00 AM
33 PARTICULATE MATTER(2.5) 7.8 µg/m3
GREEN
GOOD 4/18/14
12:00 AM
1 SULFUR DIOXIDE 1 ppb
GREEN
GOOD 4/18/14
1:00 AM
WINSTON-SALEM - GREENSBORO - HIGH POINT 42 OZONE 49 ppb
GREEN
GOOD 4/18/14
1:00 AM
39 PARTICULATE MATTER(2.5) 9.3 µg/m3
GREEN
GOOD 4/18/14
11:00 PM



 North Carolina Air Quality Index Areas



General Information About AQI
Frequently Asked Questions
Current Data from Other Areas in NC



National AQI Overview (EPA AIRNOW)
National Ambient Air Quality Standards (NAAQS)
NC Air Awareness Program

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