EnviroNearby

White County, Arkansas air quality history

Daily Air Quality Index summaries from EPA monitors in White, Arkansas, 1989–2011.

33%
Good days in 2011
54
Median daily AQI, 2011
0
Days above 100 in 2011
116
Days with an AQI in 2011 (of 365)

In 2011, EPA reported a daily Air Quality Index (AQI) for White, Arkansas on 116 days. 38 of those days (33%) were in the Good range, and the median daily AQI was 54. That median is higher than the typical monitored county in Arkansas (median 45 across 8 counties), and higher than the typical monitored U.S. county (44). The main pollutant was fine particles (PM2.5) on 116 days.

EPA did not report an AQI for every day of 2011 here (116 of 365 days). Figures describe monitored days only; seasonal monitoring (for example, ozone measured only in warmer months) can make a county look cleaner or dirtier than a full-year record would.

The most recent year with data for this county is 2011; EPA's files for 2012–2025 contain no row for it, which usually means its monitors stopped reporting.

Years with fewer than 120 monitored days (2006, 2007, 2008, 2009, 2010, 2011…) are shown in the table but left out of comparisons and trend statements.

How the days broke down each year

Each bar is one year. The colored segments show the share of monitored days that fell in each AQI category.

Share of monitored days in each AQI category, by year0%25%50%75%100%1989: Good 29 of 31 days1989: Moderate 2 of 31 days19891990: Good 59 of 61 days1990: Moderate 2 of 61 days1991: Good 58 of 59 days1991: Moderate 1 of 59 days19911992: Good 60 of 61 days1992: Moderate 1 of 61 days1993: Good 54 of 55 days1993: Moderate 1 of 55 days19931994: Good 49 of 49 days1995: Good 52 of 54 days1995: Moderate 2 of 54 days19951996: Good 53 of 54 days1996: Moderate 1 of 54 days1997: Good 53 of 55 days1997: Moderate 2 of 55 days19972000: Good 8 of 34 days2000: Moderate 26 of 34 days2001: Good 27 of 81 days2001: Moderate 54 of 81 days20012002: Good 42 of 117 days2002: Moderate 75 of 117 days2003: Good 41 of 114 days2003: Moderate 73 of 114 days20032004: Good 40 of 119 days2004: Moderate 79 of 119 days2005: Good 40 of 116 days2005: Moderate 72 of 116 days2005: Unhealthy for Sensitive Groups 4 of 116 days20052006: Good 34 of 119 days2006: Moderate 85 of 119 days2007: Good 47 of 117 days2007: Moderate 70 of 117 days20072008: Good 51 of 106 days2008: Moderate 55 of 106 days2009: Good 53 of 117 days2009: Moderate 64 of 117 days20092010: Good 37 of 117 days2010: Moderate 80 of 117 days2011: Good 38 of 116 days2011: Moderate 78 of 116 days2011
  • Good
  • Moderate
  • Unhealthy for Sensitive Groups
  • Unhealthy
  • Very Unhealthy
  • Hazardous

Typical and high-end AQI over time

The median is the middle day of the year. The 90th percentile is the level that only the highest 10% of days exceeded.

Median and 90th-percentile daily AQI, by year0501001989: 90th percentile AQI 361990: 90th percentile AQI 391991: 90th percentile AQI 391992: 90th percentile AQI 341993: 90th percentile AQI 381994: 90th percentile AQI 391995: 90th percentile AQI 421996: 90th percentile AQI 351997: 90th percentile AQI 362000: 90th percentile AQI 792001: 90th percentile AQI 732002: 90th percentile AQI 732003: 90th percentile AQI 702004: 90th percentile AQI 712005: 90th percentile AQI 852006: 90th percentile AQI 702007: 90th percentile AQI 722008: 90th percentile AQI 692009: 90th percentile AQI 662010: 90th percentile AQI 662011: 90th percentile AQI 711989: Median AQI 231990: Median AQI 201991: Median AQI 191992: Median AQI 191993: Median AQI 191994: Median AQI 191995: Median AQI 211996: Median AQI 171997: Median AQI 172000: Median AQI 612001: Median AQI 562002: Median AQI 552003: Median AQI 552004: Median AQI 552005: Median AQI 582006: Median AQI 552007: Median AQI 542008: Median AQI 512009: Median AQI 512010: Median AQI 562011: Median AQI 5419891991199319951997200120032005200720092011
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 2011

On each monitored day, the AQI reflects whichever measured pollutant had the highest index. This counts how many days each pollutant set the AQI. A pollutant that was not measured here cannot appear.

PollutantDays as main pollutantShare of monitored days
Fine particles (PM2.5)116100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
201111638780000547181PM2.5
201011737800000566690PM2.5
200911753640000516689PM2.5
200810651550000516986PM2.5
2007117477000005472100PM2.5
200611934850000557096PM2.5
2005116407240005885131PM2.5
200411940790000557196PM2.5
200311441730000557082PM2.5
200211742750000557390PM2.5
20018127540000567391PM2.5
2000348260000617985PM2.5
1997555320000173662PM10
1996545310000173551PM10
1995545220000214254PM10
1994494900000193949PM10
1993555410000193851PM10
1992616010000193454PM10
1991595810000193987PM10
1990615920000203957PM10
1989312920000233665PM10

What this data can and can’t tell you

It is a county-level summary. EPA reports one AQI per day for the county, based on the monitors operating there. Air at a particular street, school or home can differ, especially near roads, industry or wildfire smoke.

It is not a health assessment. The AQI is EPA’s scale for communicating daily air quality. A county’s history can’t tell you what the health risk is for any particular person. For daily conditions and health guidance, see AirNow.

Rules change over time. EPA has revised AQI breakpoints, most recently for fine particles in 2024, so some year-to-year change can reflect the scale rather than the air.

Counties in Arkansas with a similar median AQI in 2011

All monitored counties in Arkansas

Source: U.S. EPA AirData, “Annual AQI by County” files for 1989–2011 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem