City report · Texas, United States
Round Rock Air quality today
Air quality in Round Rock currently reads AQI 44 (Good): Air quality is satisfactory for everyone.
Air quality right now
AQI 44
Good
- PM2.5, fine particles (µg/m³)
- 7.9
- tree cover
- 33.3%
- trees in this area
- 105K
- more trees needed
- 0
Measured across a 1.2 mi (2 km) radius around Round Rock Original Plat, Round Rock, TX 78664, USA (4.9 sq mi), from a satellite image of Sep 15, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
Round Rock · AQI 44 (Good)
Round Rock's tree count comes to 104,615 trees across 4.9 sq mi (12.57 km²), already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in Round Rock today: AQI 44, Good
Main pollutant: PM2.5 · Observed Nov 11, 09:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Adelphi Acre, 6.5 mi (10.4 km) away · median of 9 stations
Health signal
Air quality is satisfactory for everyone.
PM2.5
7.9
PM10
—
NO₂
—
O₃
23.6
SO₂
—
CO
—
Data: OpenAQ · AirGradient, AirNow, Ham Y. Herst, Daniel Bentley, Arbytronix, jgon, Cherrywood
- Outdoor exercise
- A good day to be active outside
- Windows
- Open them to air the house
- Mask
- Not needed
- Air purifier
- Not needed
Over the last 7 days, the CAMS air-quality model put Round Rock's daily AQI at 45 on average, from 21 on Nov 4 to an hourly peak of 87 on Nov 10.
Where Round Rock stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in Round Rock: Healthy tree cover
33.3% tree cover against a 30% healthy-neighborhood target, across 4.9 sq mi (12.57 km²).
Trees in this area
104,615
Target trees
104,615
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has Round Rock lost?
Since 2001, the area within 10 km of Round Rock has lost about 1,830 acres (740 hectares) of forest (about 1,400 football fields): 27% of the forest it had in 2000. Most of it (99%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from September 2017 of a 5 × 5 km area about 5 km west of the city center.
- Forest lost since 2001
- 1,830 acres (740 ha)about 1,400 football fields
- Share of its forest
- 27%of what there was in 2000
- Cleared for good
- 1,810 acres (731 ha)deforestation: turned into farms, mines or towns
The worst year was 2008, when about 194 acres (79 hectares) of forest were lost.
Acres of forest lost each year
Show the figures as a table
| Year | Cleared for good | Can grow back | Total |
|---|---|---|---|
| 2001 | 159 acres (64 ha) | 3 acres (1 ha) | 163 acres (66 ha) |
| 2002 | 111 acres (45 ha) | under 1 ha | 113 acres (46 ha) |
| 2003 | 54 acres (22 ha) | under 1 ha | 55 acres (22 ha) |
| 2004 | 122 acres (49 ha) | under 1 ha | 124 acres (50 ha) |
| 2005 | 136 acres (55 ha) | under 1 ha | 137 acres (56 ha) |
| 2006 | 66 acres (27 ha) | under 1 ha | 66 acres (27 ha) |
| 2007 | 158 acres (64 ha) | under 1 ha | 160 acres (65 ha) |
| 2008 | 194 acres (79 ha) | under 1 ha | 194 acres (79 ha) |
| 2009 | 24 acres (10 ha) | under 1 ha | 25 acres (10 ha) |
| 2010 | 23 acres (9 ha) | under 1 ha | 24 acres (10 ha) |
| 2011 | 69 acres (28 ha) | under 1 ha | 70 acres (28 ha) |
| 2012 | 88 acres (35 ha) | under 1 ha | 89 acres (36 ha) |
| 2013 | 26 acres (10 ha) | under 1 ha | 27 acres (11 ha) |
| 2014 | 59 acres (24 ha) | under 1 ha | 59 acres (24 ha) |
| 2015 | 95 acres (38 ha) | under 1 ha | 96 acres (39 ha) |
| 2016 | 83 acres (34 ha) | under 1 ha | 83 acres (34 ha) |
| 2017 | 51 acres (21 ha) | under 1 ha | 51 acres (21 ha) |
| 2018 | 22 acres (9 ha) | under 1 ha | 22 acres (9 ha) |
| 2019 | 58 acres (23 ha) | under 1 ha | 60 acres (24 ha) |
| 2020 | 50 acres (20 ha) | under 1 ha | 50 acres (20 ha) |
| 2021 | 11 acres (5 ha) | under 1 ha | 11 acres (5 ha) |
| 2022 | 6 acres (2 ha) | under 1 ha | 7 acres (3 ha) |
| 2023 | 74 acres (30 ha) | under 1 ha | 74 acres (30 ha) |
| 2024 | 47 acres (19 ha) | under 1 ha | 47 acres (19 ha) |
| 2025 | 23 acres (9 ha) | under 1 ha | 23 acres (9 ha) |
What is causing deforestation around Round Rock?
- Towns and roadscleared for good94% · 1,710 acres (692 ha)
- Mining and energycleared for good5.3% · 97 acres (39 ha)
- Unknown causescause unknown1% · 19 acres (8 ha)
Also: wildfires.
Causes for 2025 are estimates, based on what caused forest loss in the same places up to 2024.
Forest gained and lost, 2000–2020
- Forest in 2000
- 14,000 acres (5,660 ha)
- Forest in 2020
- 15,300 acres (6,210 ha)
- Overall change
- +1,350 acres (547 ha)more forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around Round Rock grew from about 14,000 acres (5,660 hectares) to 15,300 acres (6,210 hectares), a net gain of about 1,350 acres (547 hectares) (+9.7%). New forest grew on about 2,710 acres (1,100 hectares), while 1,350 acres (548 hectares) were lost.
These 2000 and 2020 maps, from the University of Maryland, count any land with trees taller than 5 m as forest, including plantations and orchards. Forest that was cut or burned and had grown back by 2020 counts in both years, so the loss here is smaller than the yearly figures.
These figures cover everything within 10 km of the city center, a wider area than the report above, because forest is usually lost at a city's edges.
Source: Hansen/UMD/Google/USGS/NASA, Global Forest Change (GFC-2025-v1.13); causes: WRI/Google DeepMind drivers of forest loss; both CC BY 4.0, summed by Airleaf for each area. Forest gained and lost 2000–2020: Potapov et al. 2022, UMD GLAD Global Land Cover and Land Use Change, CC BY 4.0. Images: contains modified Copernicus Sentinel data. How it's measured
In the same region
Measured cities near Round Rock
Same 2 km radius, same index — so they compare directly.
- Austin27.5 km
United States
- Tree cover
- 28%
- Air quality
- 25
- Killeen67.9 km
United States
- Tree cover
- 26%
- Air quality
- 11
- Waco126.4 km
United States
- Tree cover
- 28%
- Air quality
- 31
- College Station129.4 km
United States
- Tree cover
- 34%
- Air quality
- 64
- San Antonio143.9 km
United States
- Tree cover
- 15%
- Air quality
- 38
- Cypress199.6 km
United States
- Tree cover
- 36%
- Air quality
- 71
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Frequently asked
Questions about Round Rock
What is the air quality (AQI) in Round Rock right now?
The latest reading for Round Rock shows an AQI of 44 (Good), measured Nov 11, 09:00 local time by 9 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Adelphi Acre, 6.5 mi (10.4 km) away). The main pollutant is PM2.5. Air quality is satisfactory for everyone.
Is it safe to exercise outside in Round Rock today?
At AQI 44 (Good): a good day to be active outside. Windows: open them to air the house. Masks: not needed. The reading changes through the day, so check again before a long run or ride.
What has the air quality in Round Rock been like this week?
Over the last 7 days, the CAMS air-quality model put Round Rock's daily AQI at 45 on average, from 21 on Nov 4 to an hourly peak of 87 on Nov 10. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around Round Rock lost since 2001?
Since 2001, the area within 10 km of Round Rock has lost about 1,830 acres (740 hectares) of forest (about 1,400 football fields): 27% of the forest it had in 2000. Most of it (99%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around Round Rock grew from about 14,000 acres (5,660 hectares) to 15,300 acres (6,210 hectares), a net gain of about 1,350 acres (547 hectares) (+9.7%). New forest grew on about 2,710 acres (1,100 hectares), while 1,350 acres (548 hectares) were lost.
What is the tree count in Round Rock?
Round Rock has an estimated 104,615 trees across the 4.9 sq mi (12.57 km²) measured — 33.3% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does Round Rock need?
Round Rock has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are Round Rock's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near Round Rock Original Plat, via OpenAQ; the 7-day trend is the Open-Meteo / CAMS model's estimate. Tree cover is measured from Sentinel-2 L2A (ESA Copernicus) via Earth Search satellite imagery at 10 m detail across a 1.2 mi (2 km) radius around Round Rock Original Plat; the tree count is an estimate derived from that cover.
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