Air Quality in Santa Ana, United States

Windy
19.4°C · 64.7% humidity
19.4°
Feels 19.4°
42
Good
Air quality is satisfactory. Enjoy outdoor activities.
5 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
48 2pm
50
17
51 5pm
51
51
51 8pm
51
51
51 11pm
38
38
26 2am
26
26
26 5am
26
26
26 8am
26
26
26 11am
26
38
Station readings
48
50
17
CAMS model adj +1
37
50
50
50
50
50
50
50
50
50
37
37
25
25
25
25
25
25
25
25
25
25
25
37
AD 728×90

PM2.5 Trend (24h)

32h · 2 stations
64.7%
Humidity
62.6 km/h
Wind SSW
1013.5 hPa
Pressure
2.9
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

What is the weather forecast for Santa Ana?

Temperature & Precipitation

PM2.510.01 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX2.9
Moderate
AD 300×250
Station readings (5 stations within 25 km)
10.01
Median
10.14
Average
9.45
Low
10.92
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -4.1

What is the 7-day forecast for Santa Ana?

04-09
20.8° 16.9°
04-10
19.1° 15.9°
13.62 mm
04-11
18.2° 15.0°
15.12 mm
04-12
17.3° 13.6°
0.31 mm
04-13
17.4° 13.8°
0.06 mm
04-14
20.9° 15.4°
04-15
22.0° 17.9°
Both models agree Avg diff: 1.5°C

Where are air quality stations near Santa Ana?

41
Davis Elementary
1.4 km PM2.5: 9.9 µg/m³
43
Villa Intermediate
1.8 km PM2.5: 10.3 µg/m³
44
Kennedy Elementary
1.9 km PM2.5: 10.6 µg/m³
40
Century High School
2.4 km PM2.5: 9.6 µg/m³
39
Monroe Elementary
3.5 km PM2.5: 9.4 µg/m³

What cities are near Santa Ana?

42 Tustin 42 Tustin Legacy 42 North Tustin 42 Garden Grove 42 Westpark 42 Fountain Valley 42 Irvine 42 El Camino Real 42 Woodbridge 42 Northwood

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-04-09T17:00 UTC.