Air Quality in Rancho Santa Margarita, United States
Windy
29.8°C · 28.9% humidity
29.8°
Feels 29.8°
20
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Rancho Santa Margarita's air quality — share it
AQI Forecast
34
1pm
34
27
20
4pm
22
30
31
7pm
32
33
33
10pm
26
27
27
1am
27
27
27
4am
27
27
27
7am
27
34
34
10am
34
54
Air Quality Index Trend
46h · 8 stnRancho Santa Margarita's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
28.9%
Humidity
46.7 km/h
Wind WSW
1006.0 hPa
Pressure
12.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
4.67 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Rancho Santa Margarita?
Temperature & Precipitation
PM2.5 Trend
46h · 8 stationsPM2.54.67 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX12.9
Extreme
Station readings (1 station within 25 km)
4.67
Median
4.67
Average
4.67
Low
4.67
High
PM2.5 µg/m³ · Model: 7.35 · Bias: +2.7
What is the 7-day forecast for Rancho Santa Margarita?
07-21
29.6° 23.3°
07-22
29.8° 23.1°
07-23
29.3° 21.5°
07-24
35.4° 22.3°
07-25
31.7° 23.5°
07-26
34.3° 21.0°
07-27
33.1° 23.5°
Both models agree
Avg diff: 2.9°C
Where are air quality stations near Rancho Santa Margarita?
20
Century High School
20
Kennedy Elementary
8
Monroe Elementary
11
Villa Intermediate
11
Davis Elementary
What cities are near Rancho Santa Margarita?
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-21T23:48 UTC.