Air Monitoring >> Latest Available Air Quality Index Readings
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: Thu Jul 24 2014 11:00:00 PM 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 42 PARTICULATE MATTER(2.5) 10.1 µg/m3
GREEN
GOOD 7/24/14
9:00 PM
32 OZONE 38 ppb
GREEN
GOOD 7/24/14
7:00 PM
CHARLOTTE - GASTONIA - CONCORD - SALISBURY 35 OZONE 41 ppb
GREEN
GOOD 7/24/14
7:00 PM
34 PARTICULATE MATTER(2.5) 8.1 µg/m3
GREEN
GOOD 7/24/14
1:00 PM
1 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 7/24/14
1:00 AM
FAYETTEVILLE 52 PARTICULATE MATTER(2.5) 12.5 µg/m3
YELLOW
MODERATE 7/24/14
6:00 PM
GREENVILLE 28 OZONE 33 ppb
GREEN
GOOD 7/24/14
9:00 PM
16 PARTICULATE MATTER(2.5) 3.9 µg/m3
GREEN
GOOD 7/24/14
4:00 PM
HICKORY - MORGANTON - LENOIR 59 PARTICULATE MATTER(2.5) 15.9 µg/m3
YELLOW
MODERATE 7/24/14
11:00 AM
RALEIGH - DURHAM - CHAPEL HILL 54 PARTICULATE MATTER(2.5) 13.4 µg/m3
YELLOW
MODERATE 7/24/14
5:00 PM
41 OZONE 48 ppb
GREEN
GOOD 7/24/14
7:00 PM
0 SULFUR DIOXIDE 0 ppb
GREEN
GOOD 7/24/14
12:00 AM
ROCKY MOUNT 52 PARTICULATE MATTER(2.5) 12.6 µg/m3
YELLOW
MODERATE 7/24/14
10:00 AM
33 OZONE 39 ppb
GREEN
GOOD 7/24/14
9:00 PM
WILMINGTON 31 OZONE 37 ppb
GREEN
GOOD 7/24/14
6:00 PM
13 PARTICULATE MATTER(2.5) 3.1 µg/m3
GREEN
GOOD 7/24/14
12:00 AM
WINSTON-SALEM - GREENSBORO - HIGH POINT 62 PARTICULATE MATTER(2.5) 17.1 µg/m3
YELLOW
MODERATE 7/24/14
5:00 PM
47 OZONE 56 ppb
GREEN
GOOD 7/24/14
7:00 PM
 North Carolina Air Quality Index Areas

General Information About AQI National AQI Overview (EPA AIRNOW)
Frequently Asked Questions National Ambient Air Quality Standards (NAAQS)
Current Data from Other Areas in NC NC Air Awareness Program