Air Quality in Santa Ana, United States

Windy
24.9°C · 45.2% humidity
24.9°
Feels 24.9°
30
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast

Nearby Monitoring Stations

AQI Forecast
54 2pm
34
34
30 5pm
27
34
34 8pm
34
34
34 11pm
34
34
34 2am
34
34
34 5am
54
54
54 8am
54
54
54 11am
54
54
AD 728×90

Air Quality Index Trend

48h · 2 stn

Santa Ana's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration. Current PM2.5 concentration in Santa Ana is 1.4× the WHO annual guideline of 5 µg/m³.

45.2%
Humidity
52.3 km/h
Wind SW
1011.9 hPa
Pressure
5.9
UV High
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
30
7.1 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Santa Ana?

Temperature & Precipitation

PM2.5 Trend

48h · 2 stations
PM2.57.1 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX5.9
High
AD 300×250

What is the 7-day forecast for Santa Ana?

05-29
24.9° 17.8°
05-30
20.5° 16.6°
05-31
23.2° 18.6°
06-01
23.1° 18.2°
06-02
24.1° 16.0°
06-03
22.8° 16.3°
06-04
22.0° 17.4°
Both models agree Avg diff: 1.8°C

Where are air quality stations near Santa Ana?

12
Davis Elementary
1.4 km PM2.5: 3.0 µg/m³
16
Villa Intermediate
1.8 km PM2.5: 3.8 µg/m³
16
Kennedy Elementary
1.9 km PM2.5: 3.8 µg/m³
17
Century High School
2.4 km PM2.5: 4.1 µg/m³
15
Monroe Elementary
3.5 km PM2.5: 3.7 µg/m³

What cities are near Santa Ana?

30 Tustin 30 Tustin Legacy 30 North Tustin 30 Garden Grove 30 Westpark 30 Fountain Valley 30 Irvine 30 El Camino Real 30 Woodbridge 30 Northwood
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-05-29T00:26 UTC.