EnviroNearby

Henrico County, Virginia air quality history

Daily Air Quality Index summaries from EPA monitors in Henrico, Virginia, 1980–2025.

76%
Good days in 2025
40
Median daily AQI, 2025
0
Days above 100 in 2025
364
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Henrico, Virginia on 364 days. 276 of those days (76%) were in the Good range, and the median daily AQI was 40. That median is higher than the typical monitored county in Virginia (median 37 across 25 counties), and about the same as the typical monitored U.S. county (40). The main pollutant was ozone on 194 days. Across the years with fuller monitoring, the share of Good days held roughly steady: an average of 71% in 1980–1982 versus 72% in 2023–2025.

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%1980: Good 243 of 366 days1980: Moderate 75 of 366 days1980: Unhealthy for Sensitive Groups 35 of 366 days1980: Unhealthy 11 of 366 days1980: Very Unhealthy 2 of 366 days19801981: Good 166 of 240 days1981: Moderate 53 of 240 days1981: Unhealthy for Sensitive Groups 17 of 240 days1981: Unhealthy 4 of 240 days1982: Good 279 of 361 days1982: Moderate 58 of 361 days1982: Unhealthy for Sensitive Groups 18 of 361 days1982: Unhealthy 5 of 361 days1982: Very Unhealthy 1 of 361 days1983: Good 232 of 364 days1983: Moderate 61 of 364 days1983: Unhealthy for Sensitive Groups 38 of 364 days1983: Unhealthy 29 of 364 days1983: Very Unhealthy 4 of 364 days1984: Good 266 of 365 days1984: Moderate 61 of 365 days1984: Unhealthy for Sensitive Groups 30 of 365 days1984: Unhealthy 8 of 365 days1985: Good 252 of 360 days1985: Moderate 74 of 360 days1985: Unhealthy for Sensitive Groups 24 of 360 days1985: Unhealthy 10 of 360 days19851986: Good 266 of 360 days1986: Moderate 68 of 360 days1986: Unhealthy for Sensitive Groups 23 of 360 days1986: Unhealthy 3 of 360 days1987: Good 252 of 360 days1987: Moderate 64 of 360 days1987: Unhealthy for Sensitive Groups 30 of 360 days1987: Unhealthy 14 of 360 days1988: Good 274 of 353 days1988: Moderate 49 of 353 days1988: Unhealthy for Sensitive Groups 17 of 353 days1988: Unhealthy 8 of 353 days1988: Very Unhealthy 5 of 353 days1989: Good 286 of 360 days1989: Moderate 54 of 360 days1989: Unhealthy for Sensitive Groups 15 of 360 days1989: Unhealthy 5 of 360 days1990: Good 218 of 310 days1990: Moderate 60 of 310 days1990: Unhealthy for Sensitive Groups 30 of 310 days1990: Unhealthy 2 of 310 days19901991: Good 132 of 229 days1991: Moderate 56 of 229 days1991: Unhealthy for Sensitive Groups 30 of 229 days1991: Unhealthy 11 of 229 days1992: Good 164 of 237 days1992: Moderate 52 of 237 days1992: Unhealthy for Sensitive Groups 17 of 237 days1992: Unhealthy 4 of 237 days1993: Good 122 of 237 days1993: Moderate 60 of 237 days1993: Unhealthy for Sensitive Groups 43 of 237 days1993: Unhealthy 12 of 237 days1994: Good 137 of 236 days1994: Moderate 69 of 236 days1994: Unhealthy for Sensitive Groups 27 of 236 days1994: Unhealthy 3 of 236 days1995: Good 151 of 236 days1995: Moderate 57 of 236 days1995: Unhealthy for Sensitive Groups 23 of 236 days1995: Unhealthy 4 of 236 days1995: Very Unhealthy 1 of 236 days19951996: Good 151 of 238 days1996: Moderate 62 of 238 days1996: Unhealthy for Sensitive Groups 24 of 238 days1996: Unhealthy 1 of 238 days1997: Good 149 of 239 days1997: Moderate 51 of 239 days1997: Unhealthy for Sensitive Groups 30 of 239 days1997: Unhealthy 9 of 239 days1998: Good 116 of 229 days1998: Moderate 62 of 229 days1998: Unhealthy for Sensitive Groups 39 of 229 days1998: Unhealthy 10 of 229 days1998: Very Unhealthy 2 of 229 days1999: Good 114 of 250 days1999: Moderate 91 of 250 days1999: Unhealthy for Sensitive Groups 33 of 250 days1999: Unhealthy 11 of 250 days1999: Very Unhealthy 1 of 250 days2000: Good 113 of 261 days2000: Moderate 129 of 261 days2000: Unhealthy for Sensitive Groups 17 of 261 days2000: Unhealthy 2 of 261 days20002001: Good 116 of 261 days2001: Moderate 115 of 261 days2001: Unhealthy for Sensitive Groups 21 of 261 days2001: Unhealthy 8 of 261 days2001: Very Unhealthy 1 of 261 days2002: Good 95 of 257 days2002: Moderate 120 of 257 days2002: Unhealthy for Sensitive Groups 31 of 257 days2002: Unhealthy 9 of 257 days2002: Very Unhealthy 2 of 257 days2003: Good 132 of 256 days2003: Moderate 105 of 256 days2003: Unhealthy for Sensitive Groups 16 of 256 days2003: Unhealthy 3 of 256 days2004: Good 139 of 303 days2004: Moderate 151 of 303 days2004: Unhealthy for Sensitive Groups 13 of 303 days2005: Good 94 of 354 days2005: Moderate 230 of 354 days2005: Unhealthy for Sensitive Groups 26 of 354 days2005: Unhealthy 4 of 354 days20052006: Good 99 of 354 days2006: Moderate 240 of 354 days2006: Unhealthy for Sensitive Groups 11 of 354 days2006: Unhealthy 4 of 354 days2007: Good 113 of 356 days2007: Moderate 220 of 356 days2007: Unhealthy for Sensitive Groups 20 of 356 days2007: Unhealthy 3 of 356 days2008: Good 156 of 365 days2008: Moderate 194 of 365 days2008: Unhealthy for Sensitive Groups 11 of 365 days2008: Unhealthy 3 of 365 days2008: Very Unhealthy 1 of 365 days2009: Good 185 of 365 days2009: Moderate 179 of 365 days2009: Unhealthy for Sensitive Groups 1 of 365 days2010: Good 156 of 365 days2010: Moderate 197 of 365 days2010: Unhealthy for Sensitive Groups 12 of 365 days20102011: Good 179 of 360 days2011: Moderate 167 of 360 days2011: Unhealthy for Sensitive Groups 13 of 360 days2011: Unhealthy 1 of 360 days2012: Good 204 of 364 days2012: Moderate 152 of 364 days2012: Unhealthy for Sensitive Groups 5 of 364 days2012: Unhealthy 3 of 364 days2013: Good 225 of 365 days2013: Moderate 140 of 365 days2014: Good 211 of 365 days2014: Moderate 154 of 365 days2015: Good 233 of 365 days2015: Moderate 129 of 365 days2015: Unhealthy for Sensitive Groups 3 of 365 days20152016: Good 249 of 364 days2016: Moderate 112 of 364 days2016: Unhealthy for Sensitive Groups 3 of 364 days2017: Good 251 of 365 days2017: Moderate 113 of 365 days2017: Unhealthy 1 of 365 days2018: Good 268 of 365 days2018: Moderate 96 of 365 days2018: Unhealthy for Sensitive Groups 1 of 365 days2019: Good 310 of 363 days2019: Moderate 53 of 363 days2020: Good 287 of 366 days2020: Moderate 79 of 366 days20202021: Good 221 of 363 days2021: Moderate 141 of 363 days2021: Unhealthy for Sensitive Groups 1 of 363 days2022: Good 235 of 364 days2022: Moderate 128 of 364 days2022: Unhealthy for Sensitive Groups 1 of 364 days2023: Good 221 of 365 days2023: Moderate 140 of 365 days2023: Unhealthy for Sensitive Groups 3 of 365 days2023: Unhealthy 1 of 365 days2024: Good 289 of 366 days2024: Moderate 76 of 366 days2024: Unhealthy for Sensitive Groups 1 of 366 days2025: Good 276 of 364 days2025: Moderate 88 of 364 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 year0501001501980: 90th percentile AQI 1191981: 90th percentile AQI 1001982: 90th percentile AQI 841983: 90th percentile AQI 1471984: 90th percentile AQI 1011985: 90th percentile AQI 1001986: 90th percentile AQI 931987: 90th percentile AQI 1081988: 90th percentile AQI 901989: 90th percentile AQI 771990: 90th percentile AQI 1011991: 90th percentile AQI 1261992: 90th percentile AQI 971993: 90th percentile AQI 1361994: 90th percentile AQI 1081995: 90th percentile AQI 1051996: 90th percentile AQI 1011997: 90th percentile AQI 1221998: 90th percentile AQI 1331999: 90th percentile AQI 1222000: 90th percentile AQI 932001: 90th percentile AQI 1012002: 90th percentile AQI 1192003: 90th percentile AQI 872004: 90th percentile AQI 802005: 90th percentile AQI 972006: 90th percentile AQI 872007: 90th percentile AQI 932008: 90th percentile AQI 772009: 90th percentile AQI 662010: 90th percentile AQI 802011: 90th percentile AQI 762012: 90th percentile AQI 652013: 90th percentile AQI 632014: 90th percentile AQI 612015: 90th percentile AQI 622016: 90th percentile AQI 612017: 90th percentile AQI 582018: 90th percentile AQI 582019: 90th percentile AQI 542020: 90th percentile AQI 552021: 90th percentile AQI 612022: 90th percentile AQI 582023: 90th percentile AQI 642024: 90th percentile AQI 552025: 90th percentile AQI 551980: Median AQI 401981: Median AQI 401982: Median AQI 351983: Median AQI 401984: Median AQI 371985: Median AQI 371986: Median AQI 321987: Median AQI 371988: Median AQI 311989: Median AQI 331990: Median AQI 391991: Median AQI 471992: Median AQI 421993: Median AQI 491994: Median AQI 441995: Median AQI 441996: Median AQI 441997: Median AQI 461998: Median AQI 501999: Median AQI 542000: Median AQI 542001: Median AQI 542002: Median AQI 592003: Median AQI 502004: Median AQI 522005: Median AQI 582006: Median AQI 582007: Median AQI 572008: Median AQI 522009: Median AQI 492010: Median AQI 522011: Median AQI 512012: Median AQI 482013: Median AQI 442014: Median AQI 472015: Median AQI 442016: Median AQI 432017: Median AQI 432018: Median AQI 422019: Median AQI 382020: Median AQI 412021: Median AQI 442022: Median AQI 452023: Median AQI 462024: Median AQI 412025: Median AQI 401980198519901995200020052010201520202025
  • 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
Ozone19453%
Fine particles (PM2.5)17047%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2025364276880000405585Ozone
20243662897610004155112Ozone
202336522114031004664159PM2.5
202236423512810004558112PM2.5
202136322114110004461112PM2.5
2020366287790000415571PM2.5
20193633105300003854100Ozone
20183652689610004258147PM2.5
201736525111301004358154PM2.5
201636424911230004361129PM2.5
201536523312930004462119PM2.5
20143652111540000476184PM2.5
201336522514000004463100PM2.5
201236420415253004865179PM2.5
2011360179167131005176151PM2.5
2010365156197120005280147PM2.5
200936518517910004966112PM2.5
2008365156194113105277205PM2.5
2007356113220203005793174PM2.5
200635499240114005887179PM2.5
200535494230264005897174PM2.5
2004303139151130005280119Ozone
2003256132105163005087187Ozone
2002257951203192059119221Ozone
20012611161152181054101203Ozone
2000261113129172005493169Ozone
19992501149133111054122202Ozone
19982291166239102050133210Ozone
1997239149513090046122195Ozone
1996238151622410044101154Ozone
1995236151572341044105201Ozone
1994236137692730044108200Ozone
19932371226043120049136182Ozone
199223716452174004297197Ozone
19912291325630110047126192Ozone
1990310218603020039101200Ozone
198936028654155003377177Ozone
198835327449178503190220Ozone
19873602526430140037108200Ozone
198636026668233003293185Ozone
19853602527424100037100195Ozone
1984365266613080037101174Ozone
19833642326138294040147208Ozone
198236127958185103584201Ozone
1981240166531740040100187Ozone
19803662437535112040119213Ozone

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 Virginia with a similar median AQI in 2025

All monitored counties in Virginia

Source: U.S. EPA AirData, “Annual AQI by County” files for 1980–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem