City report · Florida, United States
St. Petersburg Air quality today
Air quality in St. Petersburg currently reads AQI 53 (Moderate): Unusually sensitive people should consider limiting long outdoor exertion.
Air quality right now
AQI 53
Moderate
- PM2.5, fine particles (µg/m³)
- 10.3
- tree cover
- 40.6%
- trees in this area
- 127K
- more trees needed
- 0
Measured across a 1.2 mi (2 km) radius around St. Petersburg, FL, USA (4.9 sq mi), from a satellite image of Oct 21, 2026. Lower AQI is better: 0–50 is Good, above 300 is Hazardous.
St. Petersburg · AQI 53 (Moderate)
St. Petersburg's tree count comes to 126,656 trees across 4.8 sq mi (12.48 km²) of land, already at or above the 30% tree-cover level considered healthy for this area.
Air quality detail
Air quality in St. Petersburg today: AQI 53, Moderate
Main pollutant: PM2.5 · Observed Nov 11, 09:00 local time via OpenAQ ground stations, US EPA index. Values in µg/m³.
Ground station · Azalea, 3.9 mi (6.2 km) away · median of 3 stations
Health signal
Unusually sensitive people should consider limiting long outdoor exertion.
PM2.5
10.3
PM10
16.0
NO₂
21.5
O₃
58.9
SO₂
—
CO
229.1
Data: OpenAQ · AirNow
- Outdoor exercise
- Fine for most people; unusually sensitive people should take long or hard exercise easier
- Windows
- Fine to open; close them if you are sensitive to pollution
- Mask
- Not needed for most people
- Air purifier
- Worth running if you are sensitive
Over the last 7 days, the CAMS air-quality model put St. Petersburg's daily AQI at 39 on average, from 22 on Nov 8 to an hourly peak of 59 on Nov 6.
Where St. Petersburg stands: the most polluted cities in the world right now · the cleanest
Tree cover detail
Tree cover in St. Petersburg: Healthy tree cover
40.6% tree cover against a 30% healthy-neighborhood target, across 4.8 sq mi (12.48 km²) of land.
Trees in this area
126,656
Target trees
126,656
More trees needed
0
CO₂ if planted / yr
0 kg
Deforestation · 2001–2025
How much forest has St. Petersburg lost?
Since 2001, the area within 10 km of St. Petersburg has lost about 322 acres (130 hectares) of forest (about 240 football fields): 6.6% of the forest it had in 2000. Most of it (90%) was deforestation, forest cleared for good, mainly for towns and roads.
2017: satellite photo from March 2017 of a 5 × 5 km area in the city center.
- Forest lost since 2001
- 322 acres (130 ha)about 240 football fields
- Share of its forest
- 6.6%of what there was in 2000
- Cleared for good
- 290 acres (117 ha)deforestation: turned into farms, mines or towns
The worst year was 2004, when about 38 acres (16 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 | 11 acres (4 ha) | 2 acres (1 ha) | 13 acres (5 ha) |
| 2002 | 26 acres (10 ha) | under 1 ha | 28 acres (11 ha) |
| 2003 | 15 acres (6 ha) | under 1 ha | 16 acres (6 ha) |
| 2004 | 36 acres (15 ha) | under 1 ha | 38 acres (16 ha) |
| 2005 | 29 acres (12 ha) | under 1 ha | 30 acres (12 ha) |
| 2006 | 33 acres (13 ha) | 2 acres (1 ha) | 35 acres (14 ha) |
| 2007 | 13 acres (5 ha) | 3 acres (1 ha) | 15 acres (6 ha) |
| 2008 | 8 acres (3 ha) | under 1 ha | 9 acres (4 ha) |
| 2009 | under 1 ha | under 1 ha | 3 acres (1 ha) |
| 2010 | 13 acres (5 ha) | under 1 ha | 14 acres (6 ha) |
| 2011 | 19 acres (8 ha) | under 1 ha | 19 acres (8 ha) |
| 2012 | 18 acres (7 ha) | 7 acres (3 ha) | 25 acres (10 ha) |
| 2013 | 8 acres (3 ha) | under 1 ha | 9 acres (4 ha) |
| 2014 | under 1 ha | under 1 ha | under 1 ha |
| 2015 | under 1 ha | under 1 ha | 3 acres (1 ha) |
| 2016 | 4 acres (2 ha) | under 1 ha | 5 acres (2 ha) |
| 2017 | under 1 ha | under 1 ha | 2 acres (1 ha) |
| 2018 | 14 acres (6 ha) | under 1 ha | 15 acres (6 ha) |
| 2019 | under 1 ha | under 1 ha | 3 acres (1 ha) |
| 2020 | 2 acres (1 ha) | under 1 ha | 3 acres (1 ha) |
| 2021 | 9 acres (4 ha) | under 1 ha | 9 acres (4 ha) |
| 2022 | under 1 ha | under 1 ha | under 1 ha |
| 2023 | under 1 ha | under 1 ha | under 1 ha |
| 2024 | 3 acres (1 ha) | under 1 ha | 3 acres (1 ha) |
| 2025 | 21 acres (9 ha) | under 1 ha | 22 acres (9 ha) |
What is causing deforestation around St. Petersburg?
- Towns and roadscleared for good90% · 289 acres (117 ha)
- Unknown causescause unknown10% · 33 acres (13 ha)
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
- 21,100 acres (8,550 ha)
- Forest in 2020
- 22,300 acres (9,020 ha)
- Overall change
- +1,170 acres (472 ha)more forest than in 2000
Comparing satellite maps from 2000 and 2020, the forest around St. Petersburg grew from about 21,100 acres (8,550 hectares) to 22,300 acres (9,020 hectares), a net gain of about 1,170 acres (472 hectares) (+5.5%). New forest grew on about 1,330 acres (540 hectares), while 169 acres (68 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 St. Petersburg
Same 2 km radius, same index — so they compare directly.
- Clearwater24.7 km
United States
- Tree cover
- 36%
- Air quality
- 53
- Tampa29.3 km
United States
- Tree cover
- 19%
- Air quality
- 68
- Brandon42.9 km
United States
- Tree cover
- 60%
- Air quality
- 58
- Lakeland77.7 km
United States
- Tree cover
- 38%
- Air quality
- 46
- Spring Hill79.9 km
United States
- Tree cover
- 48%
- Air quality
- 46
- Cape Coral152.5 km
United States
- Tree cover
- 21%
- Air quality
- 30
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Frequently asked
Questions about St. Petersburg
What is the air quality (AQI) in St. Petersburg right now?
The latest reading for St. Petersburg shows an AQI of 53 (Moderate), measured Nov 11, 09:00 local time by 3 ground monitoring stations via OpenAQ (the median of their readings; the nearest is Azalea, 3.9 mi (6.2 km) away). The main pollutant is PM2.5. Unusually sensitive people should consider limiting long outdoor exertion.
Is it safe to exercise outside in St. Petersburg today?
At AQI 53 (Moderate): fine for most people; unusually sensitive people should take long or hard exercise easier. Windows: fine to open; close them if you are sensitive to pollution. Masks: not needed for most people. The reading changes through the day, so check again before a long run or ride.
What has the air quality in St. Petersburg been like this week?
Over the last 7 days, the CAMS air-quality model put St. Petersburg's daily AQI at 39 on average, from 22 on Nov 8 to an hourly peak of 59 on Nov 6. No day averaged above 100, the level where the air turns unhealthy for sensitive groups.
How much forest has the area around St. Petersburg lost since 2001?
Since 2001, the area within 10 km of St. Petersburg has lost about 322 acres (130 hectares) of forest (about 240 football fields): 6.6% of the forest it had in 2000. Most of it (90%) was deforestation, forest cleared for good, mainly for towns and roads. Comparing satellite maps from 2000 and 2020, the forest around St. Petersburg grew from about 21,100 acres (8,550 hectares) to 22,300 acres (9,020 hectares), a net gain of about 1,170 acres (472 hectares) (+5.5%). New forest grew on about 1,330 acres (540 hectares), while 169 acres (68 hectares) were lost.
What is the tree count in St. Petersburg?
St. Petersburg has an estimated 126,656 trees across the 4.8 sq mi (12.48 km²) of land measured — 40.6% tree cover, already past the 30% tree-cover target set for this area.
How many more trees does St. Petersburg need?
St. Petersburg has already reached its tree-cover target, so no additional trees are needed to close the gap.
How are St. Petersburg's air quality and tree cover measured?
Air quality is measured by ground monitoring stations near St. Petersburg, 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 St. Petersburg; the tree count is an estimate derived from that cover.
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