Air Quality in San Luis Obispo, United States
Windy
23.2°C · 49.5% humidity
23.2°
Feels 23.2°
17
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
San Luis Obispo's air quality — share it
AQI Forecast
34
4pm
34
34
17
7pm
22
25
28
10pm
30
31
32
1am
32
33
33
4am
33
27
34
7am
34
34
34
10am
34
34
34
1pm
34
34
Air Quality Index Trend
38h · 1 stnSan Luis Obispo's air quality is primarily affected by vehicle emissions and industrial activity. Seasonal wildfire smoke and weather patterns can cause periodic air quality deterioration.
49.5%
Humidity
48.1 km/h
Wind WNW
1006.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
4.1 µg/m³
PM10▲
20.55 µg/m³
050100150200300500
What is the weather forecast for San Luis Obispo?
Temperature & Precipitation
PM2.5 Trend
38h · 1 stationPM2.54.1 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
4.1
Median
4.1
Average
4.1
Low
4.1
High
PM2.5 µg/m³ · Model: 7.35 · Bias: +3.2
What is the 7-day forecast for San Luis Obispo?
07-22
24.9° 15.1°
07-23
21.9° 16.6°
07-24
23.3° 15.6°
0.06 mm
07-25
22.1° 15.4°
07-26
25.7° 15.0°
07-27
25.4° 15.1°
07-28
22.2° 13.6°
0.19 mm
Both models agree
Avg diff: 3.8°C
Where are air quality stations near San Luis Obispo?
87
Atascadero-Lewis Avenue, San Luis Obispo, California
59
Atascadero-Lewis Avenue, San Luis Obispo, California
What cities are near San Luis Obispo?
Get AQI alerts for San Luis Obispo
Notify me when air quality reaches:
Free · No account · Unsubscribe any time
Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-07-22T02:17 UTC.