Monitored days with good air quality
60.7%
2025 · U.S. EPA AirData
Acres burned per year
≈ 220,000
Area in drought (D1–D4), yearly average
93.7%
2025 · U.S. Drought Monitor
Water withdrawals per capita
≈ 1,500 gal/day
Energy-related CO₂ emissions
83
2021 · U.S. EIA State Energy Data System
Average annual temperature
62.8
2025 · NOAA National Centers for Environmental Information
Air Quality
Pollution levels.
Monitored days with good air quality
60.7%
2025 · U.S. EPA AirData
Monitored days unhealthy for sensitive groups or worse
2.4%
2025 · U.S. EPA AirData
Average PM2.5
8.5 µg/m³
Phoenix ozone
Frequent alerts
Monitored days with good air quality
1990–202560.7%
U.S. EPA AirData, Annual AQI by County, all monitored Arizona counties.
Monitored days unhealthy for sensitive groups or worse
1990–20252.4%
U.S. EPA AirData, Annual AQI by County (AQI above 100).
| Indicator | Arizona | U.S. |
|---|---|---|
| Average PM2.5 (µg/m³) | 8.5 | 8.0 |
Wildfires
Fire activity.
Acres burned per year
≈ 220,000
| Indicator | Arizona | U.S. |
|---|---|---|
| Acres burned per year (thousands) | 220 | 7000 |
Drought
Dry conditions.
Area in drought (D1–D4), yearly average
93.7%
2025 · U.S. Drought Monitor
Area in extreme or exceptional drought (D3–D4)
36.0%
2025 · U.S. Drought Monitor
Share of area in drought
60%
Area in drought (D1–D4), yearly average
2000–202593.7%
U.S. Drought Monitor (NDMC / USDA / NOAA), average of weekly maps.
Area in extreme or exceptional drought (D3–D4)
2000–202536%
U.S. Drought Monitor (NDMC / USDA / NOAA), average of weekly maps.
| Indicator | Arizona | U.S. |
|---|---|---|
| Share of area in drought (%) | 60 | 25 |
Water Usage
Water withdrawals.
Water withdrawals per capita
≈ 1,500 gal/day
Colorado River
36% of supply
| Indicator | Arizona | U.S. |
|---|---|---|
| Water withdrawals per capita (gal/day) | 1500 | 1000 |
- •Roughly 36% of Arizona's water comes from the Colorado River, which has been in shortage conditions since 2021.
Emissions
Greenhouse gases.
Energy-related CO₂ emissions
83
2021 · U.S. EIA State Energy Data System
Transportation CO₂ emissions
38.5
2021 · U.S. EIA State Energy Data System
CO2 emissions per capita
12.0 t
Energy-related CO₂ emissions
1970–202183▲ 233%
U.S. EIA State Energy Data System, all sectors and fuels (FRED EMISSCO2TOTVTTTOAZA).
Transportation CO₂ emissions
1970–202138.5▲ 187%
U.S. EIA State Energy Data System, transportation sector (FRED EMISSCO2TOTVTCTOAZA).
| Indicator | Arizona | U.S. |
|---|---|---|
| CO2 emissions per capita (t) | 12.0 | 14.4 |
Climate Indicators
Temperature and rainfall.
Average annual temperature
62.8
2025 · NOAA National Centers for Environmental Information
Annual precipitation
9.8
2025 · NOAA National Centers for Environmental Information
Average annual temperature
1895–202562.8▲ 7%
NOAA National Centers for Environmental Information, Climate at a Glance, statewide January–December average.
Annual precipitation
1895–20259.82▼ 14%
NOAA National Centers for Environmental Information, Climate at a Glance, statewide January–December total.
| Indicator | Arizona | U.S. |
|---|---|---|
| Annual precipitation (mm) | 340 | 767 |
- •Phoenix records around 111 days a year above 100°F (38°C), the most of any major U.S. city.