Air quality comparison · Venezuela, 622 km apart
Ciudad Guayana vs Valencia Air quality index (AQI) today
Ciudad Guayana has cleaner air than Valencia right now: AQI 14 (Good) against 59 (Moderate).
That puts them in different EPA bands, so the health advice differs today. Over the past 7 days, on modeled daily averages, Ciudad Guayana averaged AQI 42 against 53, and it was the cleaner of the two on 5 of those days. Ciudad Guayana has lost more forest since 2001. Ciudad Guayana has more tree cover.
Venezuela
AQI 14
Good
Cleaner right now
- PM2.5
- 2.6 µg/m³
- Main pollutant
- PM2.5
- Source
- Model estimate
- Reading
- Nov 10, 09:00 local
Venezuela
AQI 59
Moderate
Cleaner right now
- PM2.5
- 13.4 µg/m³
- Main pollutant
- PM2.5
- Source
- Model estimate
- Reading
- Nov 10, 08:00 local
Updated . Lower is better on the US EPA index: 0–50 is Good, above 300 is Hazardous. Measured by Airleaf.
Ciudad Guayana14Valencia59
Head to head
Ciudad Guayana vs Valencia at a glance
Ciudad Guayana is ahead on 5 of 6 measures, and Valencia on 1. The better figure in each row is marked.
| Ciudad Guayana | Valencia | |
|---|---|---|
| Air quality nowUS AQI. Lower is better. | 14 (better) | 59 |
| PM2.5Fine particles, µg/m³. | 2.6 (better) | 13.4 |
| Past week's averageUS AQI, 7 days. | 42 (better) | 53 |
| Forest lost since 2001Within 10 km of the center. | 1,320 ha | 441 ha (better) |
| Tree coverWithin 2 km of the center. | 16.1% (better) | 11.1% |
| Trees still neededTo reach a healthy canopy. | 43.7K (better) | 59.4K |
Air quality today
What is the air like in Ciudad Guayana and Valencia right now?
Ciudad Guayana has cleaner air than Valencia right now: AQI 14 (Good) against 59 (Moderate). PM2.5 is setting the index in both.
Both readings are model estimates, with no ground station close enough to either.
Ciudad GuayanaValencia
Concentrations at the same moment as the index above, for the pollutants both places report. Lower is better. The dark marks on the PM2.5 and PM10 rows show the WHO's 24-hour guidelines (15 and 45 µg/m³).
Ciudad Guayana: Model estimate · no ground station nearby. Data: Open-Meteo / CAMS, US EPA index.
Valencia: Model estimate · no ground station nearby. Data: Open-Meteo / CAMS, US EPA index.
The past week
Which had cleaner air over the past 7 days?
Over the past 7 days, on modeled daily averages, Ciudad Guayana averaged AQI 42 against 53, and it was the cleaner of the two on 5 of those days. A single reading can catch a city on a bad afternoon; the week says whether it was the weather or the place.
- Cleaner days
- Ciudad Guayana5Valencia2
- Average AQI
- Ciudad Guayana42Valencia53
- Worst day, AQI
- Ciudad Guayana67Valencia65
The daily numbers (7 days)
| Day | Ciudad Guayana | Valencia |
|---|---|---|
| Nov 4 | 38 | 53 |
| Nov 5 | 42 | 57 |
| Nov 6 | 46 | 52 |
| Nov 7 | 67 | 49 |
| Nov 8 | 54 | 50 |
| Nov 9 | 31 | 46 |
| Nov 10 | 16 | 65 |
Daily averages from the CAMS atmospheric model for both places, so the week compares like with like. They can differ from today's reading at the top of the page wherever that comes from a ground station.
What it means today
Is it safe to go outside in Ciudad Guayana and Valencia today?
Ciudad Guayana (AQI 14, Good): Air quality is satisfactory for everyone.
Valencia (AQI 59, Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Exercise outdoors
- Ciudad Guayana
- A good day to be active outside.
- Valencia
- Fine for most people; unusually sensitive people should take long or hard exercise easier.
Windows
- Ciudad Guayana
- Open them to air the house.
- Valencia
- Fine to open; close them if you are sensitive to pollution.
Masks
- Ciudad Guayana
- Not needed.
- Valencia
- Not needed for most people.
Air purifier
- Ciudad Guayana
- Not needed.
- Valencia
- Worth running if you are sensitive.
Against everywhere else
How do Ciudad Guayana and Valencia compare with the rest of the world?
Right now Ciudad Guayana's air is cleaner than 94% of the 5,420 places Airleaf tracks, and Valencia's is cleaner than 48%. Within Venezuela, that is 88% and 18% of its 57 measured places.
Cleaner air than…
- Ciudad Guayana
- Beats 94%
- Valencia
- Beats 48%
More tree cover than…
- Ciudad Guayana
- Beats 37%
- Valencia
- Beats 24%
Includes model estimates as well as station readings, so it can differ from our most polluted and cleanest air rankings, which use station readings only.
Deforestation · 2001–2025
Which has lost more forest, Ciudad Guayana or Valencia?
Ciudad Guayana has lost more: about 1,320 ha of forest within 10 km of its center from 2001 to 2025, against 441 ha around Valencia. 1,290 ha of that was cleared for good, for farms, mines or towns.
Measured within 10 km of each center, from the yearly satellite maps of forest loss: a wider circle than the one for tree cover, because forest is usually lost at a city's edges.
Worst year: 2008, with 128 ha lost.
Worst year: 2007, with 87 ha lost.
| Ciudad Guayana | Valencia | |
|---|---|---|
| Forest lost since 2001Cleared, burned or logged. | 1,320 ha | 441 ha (better) |
| Share of its forestOf what it had in 2000. | 9.9% (better) | 10% |
| Cleared for goodTurned into farms, mines or towns. | 1,290 ha | 426 ha (better) |
| Recent trend2021–2025 against the five years before. | Slowing down | Too little to call |
| Main known cause | Farms, pasture and plantations (95%) | Towns and roads (56%) |
Satellite timelapses
Watch both change, year by year
A clear satellite photo a year of the land around each city. Press play, turn on the forest cleared since the first year, or drag the before and after.
Ciudad Guayana
2017: satellite photo from August 2017 of a 5 × 5 km area about 7 km east of the city center.
Valencia
2017: satellite photo from February 2017 of a 5 × 5 km area in the city center.
Trees
Which has more trees, Ciudad Guayana or Valencia?
Ciudad Guayana has more tree cover: 16.1% of the land within 2 km of its center against 11.1% around Valencia, or about 50,580 trees against 34,872.
The dark mark is each place's canopy target: 30% of the land, raised where air quality is poor.
| Ciudad Guayana | Valencia | |
|---|---|---|
| Trees standingEstimated from the canopy area. | 50.6K (better) | 34.9K |
| Trees still neededTo reach the target. Fewer is better. | 43.7K (better) | 59.4K |
| CO₂ absorbed each yearBy the trees already standing. | 1.1M kg (better) | 767K kg |
Tree cover on the satellite image
The same 2 km radius around each center, with the tree cover the satellite found marked on it.
Reading these numbers
How this comparison is made
Air quality index
The US EPA index, computed from current pollutant concentrations: ground stations where a place has them nearby, and the CAMS atmospheric model everywhere else. It moves hour to hour, so it is a snapshot rather than a verdict on either place. The guideline marks are from the WHO's 2021 air quality guidelines.
Trees and forest
Tree cover is the share of ground under canopy within 2 km of each center, read from Sentinel-2 satellite imagery at 10 m detail. It measures that circle, not the whole municipality, which is what makes the two comparable. Forest loss comes from the University of Maryland's Global Forest Change maps.
More on the method on the About Airleaf page.
Frequently asked
Ciudad Guayana vs Valencia: your questions answered
Is Ciudad Guayana cleaner than Valencia?
On air quality, yes, right now: Ciudad Guayana reads AQI 14 against 59, a gap of 45 points on the US EPA index. This is a live reading rather than an annual average, so it can reverse within a day. Over the past 7 days, on modeled daily averages, Ciudad Guayana averaged AQI 42 against 53, and it was the cleaner of the two on 5 of those days.
Is it safe to exercise outdoors in Ciudad Guayana and Valencia today?
In Ciudad Guayana, at AQI 14: Air quality is satisfactory for everyone. In Valencia, at AQI 59: Unusually sensitive people should consider limiting long outdoor exertion.
Which has lost more forest, Ciudad Guayana or Valencia?
Ciudad Guayana has lost more: about 1,320 ha of forest within 10 km of its center from 2001 to 2025, against 441 ha around Valencia. 1,290 ha of that was cleared for good, for farms, mines or towns.
Which has more trees, Ciudad Guayana or Valencia?
Ciudad Guayana has more tree cover: 16.1% of the land within 2 km of its center against 11.1% around Valencia, or about 50,580 trees against 34,872. Both figures describe the same-sized circle of ground around each center, not the whole municipality.
How many more trees do Ciudad Guayana and Valencia need?
Ciudad Guayana needs about 43,668 more to reach its canopy target of 30%, and Valencia about 59,376 to reach 30%. The target starts at 30% of the land and rises where air quality is poor.
Are Ciudad Guayana and Valencia measured the same way?
The method is the same: the US EPA index for air, and Sentinel-2 satellite imagery at 10 m detail over an identical radius for trees. Both readings are model estimates, with no ground station close enough to either. Nothing is adjusted for population, city limits or climate.
How often does the Ciudad Guayana vs Valencia comparison update?
The air readings refresh about once an hour, and each reading's local time is shown at the top of the page. Tree cover comes from the latest clear satellite image of each area (Sep 14, 2026 and Sep 8, 2026), and the forest figures are published yearly.
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