Monitored days with good air quality
71.8%
2025 · U.S. EPA AirData
Acres burned per year
≈ 1,500
Area in drought (D1–D4), yearly average
20.0%
2025 · U.S. Drought Monitor
Total withdrawals
≈ 6.0 B gal/day
Energy-related CO₂ emissions
166.4
2021 · U.S. EIA State Energy Data System
Average annual temperature
52.8
2025 · NOAA National Centers for Environmental Information
Air Quality
Pollution levels.
Monitored days with good air quality
71.8%
2025 · U.S. EPA AirData
Monitored days unhealthy for sensitive groups or worse
0.8%
2025 · U.S. EPA AirData
Average PM2.5
8.9 µg/m³
Rank
Worse than average
Monitored days with good air quality
1990–202571.8%
U.S. EPA AirData, Annual AQI by County, all monitored Indiana counties.
Monitored days unhealthy for sensitive groups or worse
1990–20250.8%
U.S. EPA AirData, Annual AQI by County (AQI above 100).
| Indicator | Indiana | U.S. |
|---|---|---|
| PM2.5 (µg/m³) | 8.9 | 8 |
Wildfires
Fire activity.
Acres burned per year
≈ 1,500
Risk level
Low
Main type
Prescribed & brush fires
Drought
Dry conditions.
Area in drought (D1–D4), yearly average
20.0%
2025 · U.S. Drought Monitor
Area in extreme or exceptional drought (D3–D4)
1.4%
2025 · U.S. Drought Monitor
Share of area in drought
5%
Trend
Occasional summer drought
Area in drought (D1–D4), yearly average
2000–202520%
U.S. Drought Monitor (NDMC / USDA / NOAA), average of weekly maps.
Area in extreme or exceptional drought (D3–D4)
2000–20251.4%
U.S. Drought Monitor (NDMC / USDA / NOAA), average of weekly maps.
Water Usage
Water withdrawals.
Total withdrawals
≈ 6.0 B gal/day
Public supply
≈ 650 M gal/day
Main sources
Lake Michigan, Ohio & Wabash rivers
Emissions
Greenhouse gases.
Energy-related CO₂ emissions
166.4
2021 · U.S. EIA State Energy Data System
Transportation CO₂ emissions
39.8
2021 · U.S. EIA State Energy Data System
CO2 emissions per capita
26.5 t
Rank
Among the highest
Main source
Industry & power
Energy-related CO₂ emissions
1970–2021166.4▼ 3%
U.S. EIA State Energy Data System, all sectors and fuels (FRED EMISSCO2TOTVTTTOINA).
Transportation CO₂ emissions
1970–202139.8▲ 49%
U.S. EIA State Energy Data System, transportation sector (FRED EMISSCO2TOTVTCTOINA).
| Indicator | Indiana | U.S. |
|---|---|---|
| CO2 per capita (tonnes) | 26.5 | 14.7 |
Climate Indicators
Temperature and rainfall.
Average annual temperature
52.8
2025 · NOAA National Centers for Environmental Information
Annual precipitation
39.9
2025 · NOAA National Centers for Environmental Information
Avg. temperature change
+1.2 °C since 1900
Extreme rainfall
Increasing
Average annual temperature
1895–202552.8▲ 6%
NOAA National Centers for Environmental Information, Climate at a Glance, statewide January–December average.
Annual precipitation
1895–202539.86▲ 31%
NOAA National Centers for Environmental Information, Climate at a Glance, statewide January–December total.