EnviroNearby

Rockingham County, North Carolina air quality history

Daily Air Quality Index summaries from EPA monitors in Rockingham, North Carolina, 1982–2025.

95%
Good days in 2025
38
Median daily AQI, 2025
0
Days above 100 in 2025
243
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Rockingham, North Carolina on 243 days. 231 of those days (95%) were in the Good range, and the median daily AQI was 38. That median is about the same as the typical monitored county in North Carolina (median 39 across 33 counties), and about the same as the typical monitored U.S. county (40). The main pollutant was ozone on 243 days. Across the years with fuller monitoring, the share of Good days rose: an average of 56% in 1994–1996 versus 89% in 2023–2025.

EPA did not report an AQI for every day of 2025 here (243 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.

Years with fewer than 120 monitored days (1982, 1993, 1998) 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%1982: Good 30 of 30 days19821993: Good 28 of 76 days1993: Moderate 26 of 76 days1993: Unhealthy for Sensitive Groups 19 of 76 days1993: Unhealthy 3 of 76 days1994: Good 99 of 214 days1994: Moderate 78 of 214 days1994: Unhealthy for Sensitive Groups 29 of 214 days1994: Unhealthy 8 of 214 days1995: Good 152 of 210 days1995: Moderate 54 of 210 days1995: Unhealthy for Sensitive Groups 4 of 210 days1996: Good 101 of 210 days1996: Moderate 79 of 210 days1996: Unhealthy for Sensitive Groups 25 of 210 days1996: Unhealthy 4 of 210 days1996: Very Unhealthy 1 of 210 days1997: Good 82 of 214 days1997: Moderate 80 of 214 days1997: Unhealthy for Sensitive Groups 42 of 214 days1997: Unhealthy 10 of 214 days19971998: Good 42 of 67 days1998: Moderate 12 of 67 days1998: Unhealthy for Sensitive Groups 9 of 67 days1998: Unhealthy 4 of 67 days1999: Good 138 of 210 days1999: Moderate 62 of 210 days1999: Unhealthy for Sensitive Groups 8 of 210 days1999: Unhealthy 2 of 210 days2000: Good 132 of 213 days2000: Moderate 59 of 213 days2000: Unhealthy for Sensitive Groups 20 of 213 days2000: Unhealthy 2 of 213 days2001: Good 107 of 213 days2001: Moderate 75 of 213 days2001: Unhealthy for Sensitive Groups 23 of 213 days2001: Unhealthy 8 of 213 days2002: Good 101 of 214 days2002: Moderate 66 of 214 days2002: Unhealthy for Sensitive Groups 34 of 214 days2002: Unhealthy 10 of 214 days2002: Very Unhealthy 3 of 214 days20022003: Good 140 of 213 days2003: Moderate 55 of 213 days2003: Unhealthy for Sensitive Groups 16 of 213 days2003: Unhealthy 2 of 213 days2004: Good 152 of 210 days2004: Moderate 51 of 210 days2004: Unhealthy for Sensitive Groups 7 of 210 days2005: Good 128 of 213 days2005: Moderate 69 of 213 days2005: Unhealthy for Sensitive Groups 16 of 213 days2006: Good 130 of 214 days2006: Moderate 65 of 214 days2006: Unhealthy for Sensitive Groups 18 of 214 days2006: Unhealthy 1 of 214 days2007: Good 90 of 209 days2007: Moderate 92 of 209 days2007: Unhealthy for Sensitive Groups 26 of 209 days2007: Unhealthy 1 of 209 days20072008: Good 121 of 214 days2008: Moderate 78 of 214 days2008: Unhealthy for Sensitive Groups 13 of 214 days2008: Unhealthy 2 of 214 days2009: Good 172 of 214 days2009: Moderate 41 of 214 days2009: Unhealthy for Sensitive Groups 1 of 214 days2010: Good 117 of 214 days2010: Moderate 88 of 214 days2010: Unhealthy for Sensitive Groups 8 of 214 days2010: Unhealthy 1 of 214 days2011: Good 119 of 212 days2011: Moderate 89 of 212 days2011: Unhealthy for Sensitive Groups 4 of 212 days2012: Good 152 of 214 days2012: Moderate 55 of 214 days2012: Unhealthy for Sensitive Groups 7 of 214 days20122013: Good 188 of 212 days2013: Moderate 23 of 212 days2013: Unhealthy for Sensitive Groups 1 of 212 days2014: Good 168 of 214 days2014: Moderate 45 of 214 days2014: Unhealthy for Sensitive Groups 1 of 214 days2015: Good 164 of 214 days2015: Moderate 49 of 214 days2015: Unhealthy for Sensitive Groups 1 of 214 days2016: Good 183 of 212 days2016: Moderate 28 of 212 days2016: Unhealthy for Sensitive Groups 1 of 212 days2017: Good 208 of 240 days2017: Moderate 32 of 240 days20172018: Good 190 of 233 days2018: Moderate 43 of 233 days2019: Good 207 of 245 days2019: Moderate 38 of 245 days2020: Good 238 of 243 days2020: Moderate 5 of 243 days2021: Good 200 of 239 days2021: Moderate 39 of 239 days2022: Good 219 of 239 days2022: Moderate 20 of 239 days20222023: Good 212 of 245 days2023: Moderate 32 of 245 days2023: Unhealthy for Sensitive Groups 1 of 245 days2024: Good 205 of 244 days2024: Moderate 39 of 244 days2025: Good 231 of 243 days2025: Moderate 12 of 243 days2025
  • 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 year0501001501982: 90th percentile AQI 91993: 90th percentile AQI 1331994: 90th percentile AQI 1221995: 90th percentile AQI 801996: 90th percentile AQI 1121997: 90th percentile AQI 1361998: 90th percentile AQI 1151999: 90th percentile AQI 872000: 90th percentile AQI 1012001: 90th percentile AQI 1152002: 90th percentile AQI 1292003: 90th percentile AQI 972004: 90th percentile AQI 842005: 90th percentile AQI 932006: 90th percentile AQI 972007: 90th percentile AQI 1122008: 90th percentile AQI 902009: 90th percentile AQI 712010: 90th percentile AQI 902011: 90th percentile AQI 842012: 90th percentile AQI 712013: 90th percentile AQI 512014: 90th percentile AQI 612015: 90th percentile AQI 642016: 90th percentile AQI 582017: 90th percentile AQI 542018: 90th percentile AQI 582019: 90th percentile AQI 582020: 90th percentile AQI 472021: 90th percentile AQI 582022: 90th percentile AQI 502023: 90th percentile AQI 582024: 90th percentile AQI 612025: 90th percentile AQI 471982: Median AQI 31993: Median AQI 711994: Median AQI 541995: Median AQI 441996: Median AQI 541997: Median AQI 641998: Median AQI 441999: Median AQI 442000: Median AQI 452001: Median AQI 502002: Median AQI 512003: Median AQI 452004: Median AQI 442005: Median AQI 482006: Median AQI 482007: Median AQI 542008: Median AQI 472009: Median AQI 422010: Median AQI 492011: Median AQI 492012: Median AQI 442013: Median AQI 402014: Median AQI 442015: Median AQI 442016: Median AQI 422017: Median AQI 422018: Median AQI 422019: Median AQI 442020: Median AQI 362021: Median AQI 432022: Median AQI 412023: Median AQI 432024: Median AQI 432025: Median AQI 3819821997200220072012201720222025
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 2025

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
Ozone243100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2025243231120000384774Ozone
20242442053900004361100Ozone
20232452123210004358108Ozone
2022239219200000415080Ozone
2021239200390000435890Ozone
202024323850000364754Ozone
2019245207380000445884Ozone
2018233190430000425890Ozone
2017240208320000425484Ozone
20162121832810004258101Ozone
20152141644910004464112Ozone
20142141684510004461101Ozone
20132121882310004051105Ozone
20122141525570004471129Ozone
20112121198940004984129Ozone
20102141178881004990156Ozone
20092141724110004271101Ozone
200821412178132004790161Ozone
200720990922610054112151Ozone
200621413065181004897156Ozone
200521312869160004893133Ozone
20042101525170004484126Ozone
200321314055162004597154Ozone
20022141016634103051129210Ozone
2001213107752380050115182Ozone
2000213132592020045101182Ozone
19992101386282004487187Ozone
1998674212940044115192Ozone
1997214828042100064136182Ozone
1996210101792541054112202Ozone
19952101525440004480140Ozone
199421499782980054122185Ozone
19937628261930071133156Ozone
19823030000003934Ozone

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 North Carolina with a similar median AQI in 2025

All monitored counties in North Carolina

Source: U.S. EPA AirData, “Annual AQI by County” files for 1982–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem