Air Quality in San Bernardino, California
87
Median AQI (2024)
593
Max AQI (2024)
→ stable
10-Year Trend
Ozone
Primary Pollutant
40
Good Days (2024)
28
Monitoring Stations
AQI Trend (Median)
Air Quality Days by Category
Annual Summary
| Year | Median AQI | Max AQI | Good Days | Moderate Days | Unhealthy Days | Ozone Days | PM2.5 Days |
|---|---|---|---|---|---|---|---|
| 2024 | 87 | 593 | 40 | 182 | 144 | 218 | 123 |
| 2023 | 71 | 214 | 50 | 197 | 118 | 205 | 137 |
| 2022 | 77 | 225 | 23 | 212 | 130 | 197 | 142 |
| 2021 | 87 | 486 | 17 | 202 | 146 | 191 | 155 |
| 2020 | 93 | 236 | 33 | 170 | 163 | 219 | 128 |
| 2019 | 81 | 213 | 29 | 203 | 133 | 214 | 140 |
| 2018 | 89 | 221 | 14 | 197 | 154 | 197 | 159 |
| 2017 | 84 | 233 | 9 | 209 | 147 | 203 | 140 |
| 2016 | 84 | 217 | 9 | 219 | 138 | 182 | 157 |
| 2015 | 84 | 223 | 14 | 221 | 130 | 190 | 151 |
Recent Daily AQI
| Date | AQI | Category | Primary Pollutant |
|---|---|---|---|
| Dec 31, 2024 | 110 | Unhealthy for Sensitive Groups | PM2.5 |
| Dec 30, 2024 | 111 | Unhealthy for Sensitive Groups | PM2.5 |
| Dec 29, 2024 | 125 | Unhealthy for Sensitive Groups | PM2.5 |
| Dec 28, 2024 | 113 | Unhealthy for Sensitive Groups | PM2.5 |
| Dec 27, 2024 | 78 | Moderate | PM2.5 |
| Dec 26, 2024 | 66 | Moderate | PM2.5 |
| Dec 25, 2024 | 69 | Moderate | PM2.5 |
| Dec 24, 2024 | 86 | Moderate | PM2.5 |
| Dec 23, 2024 | 119 | Unhealthy for Sensitive Groups | PM2.5 |
| Dec 22, 2024 | 140 | Unhealthy for Sensitive Groups | PM2.5 |
| Dec 21, 2024 | 98 | Moderate | PM2.5 |
| Dec 20, 2024 | 83 | Moderate | PM2.5 |
| Dec 19, 2024 | 61 | Moderate | NO2 |
| Dec 18, 2024 | 56 | Moderate | NO2 |
| Dec 17, 2024 | 65 | Moderate | PM10 |
| Dec 16, 2024 | 63 | Moderate | PM2.5 |
| Dec 15, 2024 | 72 | Moderate | PM2.5 |
| Dec 14, 2024 | 73 | Moderate | PM2.5 |
| Dec 13, 2024 | 70 | Moderate | PM2.5 |
| Dec 12, 2024 | 60 | Moderate | PM2.5 |
| Dec 11, 2024 | 65 | Moderate | PM2.5 |
| Dec 10, 2024 | 55 | Moderate | PM10 |
| Dec 9, 2024 | 96 | Moderate | PM2.5 |
| Dec 8, 2024 | 68 | Moderate | PM2.5 |
| Dec 7, 2024 | 65 | Moderate | PM2.5 |
| Dec 6, 2024 | 82 | Moderate | PM2.5 |
| Dec 5, 2024 | 157 | Unhealthy | PM2.5 |
| Dec 4, 2024 | 116 | Unhealthy for Sensitive Groups | PM2.5 |
| Dec 3, 2024 | 92 | Moderate | PM2.5 |
| Dec 2, 2024 | 82 | Moderate | PM2.5 |
| Dec 1, 2024 | 65 | Moderate | PM2.5 |
| Nov 30, 2024 | 65 | Moderate | PM2.5 |
| Nov 29, 2024 | 71 | Moderate | PM2.5 |
| Nov 28, 2024 | 68 | Moderate | PM2.5 |
| Nov 27, 2024 | 64 | Moderate | PM2.5 |
| Nov 26, 2024 | 63 | Moderate | PM2.5 |
| Nov 25, 2024 | 66 | Moderate | PM2.5 |
| Nov 24, 2024 | 41 | Good | PM2.5 |
| Nov 23, 2024 | 90 | Moderate | PM10 |
| Nov 22, 2024 | 76 | Moderate | PM2.5 |
| Nov 21, 2024 | 62 | Moderate | NO2 |
| Nov 20, 2024 | 55 | Moderate | NO2 |
| Nov 19, 2024 | 61 | Moderate | PM2.5 |
| Nov 18, 2024 | 56 | Moderate | PM10 |
| Nov 17, 2024 | 52 | Moderate | PM2.5 |
| Nov 16, 2024 | 51 | Moderate | PM2.5 |
| Nov 15, 2024 | 51 | Moderate | PM2.5 |
| Nov 14, 2024 | 57 | Moderate | PM2.5 |
| Nov 13, 2024 | 56 | Moderate | NO2 |
| Nov 12, 2024 | 63 | Moderate | PM2.5 |
| Nov 11, 2024 | 76 | Moderate | PM2.5 |
| Nov 10, 2024 | 67 | Moderate | PM2.5 |
| Nov 9, 2024 | 62 | Moderate | PM2.5 |
| Nov 8, 2024 | 59 | Moderate | PM2.5 |
| Nov 7, 2024 | 52 | Moderate | PM2.5 |
| Nov 6, 2024 | 107 | Unhealthy for Sensitive Groups | PM10 |
| Nov 5, 2024 | 43 | Good | Ozone |
| Nov 4, 2024 | 54 | Moderate | PM10 |
| Nov 3, 2024 | 52 | Moderate | PM2.5 |
| Nov 2, 2024 | 61 | Moderate | PM2.5 |
| Nov 1, 2024 | 67 | Moderate | Ozone |
| Oct 31, 2024 | 58 | Moderate | Ozone |
| Oct 30, 2024 | 52 | Moderate | PM2.5 |
| Oct 29, 2024 | 52 | Moderate | PM2.5 |
| Oct 28, 2024 | 95 | Moderate | PM10 |
| Oct 27, 2024 | 126 | Unhealthy for Sensitive Groups | Ozone |
| Oct 26, 2024 | 126 | Unhealthy for Sensitive Groups | Ozone |
| Oct 25, 2024 | 122 | Unhealthy for Sensitive Groups | Ozone |
| Oct 24, 2024 | 100 | Moderate | Ozone |
| Oct 23, 2024 | 100 | Moderate | Ozone |
| Oct 22, 2024 | 71 | Moderate | Ozone |
| Oct 21, 2024 | 64 | Moderate | Ozone |
| Oct 20, 2024 | 53 | Moderate | PM2.5 |
| Oct 19, 2024 | 52 | Moderate | PM2.5 |
| Oct 18, 2024 | 65 | Moderate | PM10 |
| Oct 17, 2024 | 90 | Moderate | PM10 |
| Oct 16, 2024 | 91 | Moderate | PM2.5 |
| Oct 15, 2024 | 86 | Moderate | PM2.5 |
| Oct 14, 2024 | 62 | Moderate | PM2.5 |
| Oct 13, 2024 | 77 | Moderate | Ozone |
| Oct 12, 2024 | 80 | Moderate | Ozone |
| Oct 11, 2024 | 87 | Moderate | Ozone |
| Oct 10, 2024 | 108 | Unhealthy for Sensitive Groups | Ozone |
| Oct 9, 2024 | 119 | Unhealthy for Sensitive Groups | Ozone |
| Oct 8, 2024 | 112 | Unhealthy for Sensitive Groups | Ozone |
| Oct 7, 2024 | 136 | Unhealthy for Sensitive Groups | Ozone |
| Oct 6, 2024 | 172 | Unhealthy | Ozone |
| Oct 5, 2024 | 204 | Very Unhealthy | Ozone |
| Oct 4, 2024 | 177 | Unhealthy | Ozone |
| Oct 3, 2024 | 203 | Very Unhealthy | Ozone |
Monitoring Stations
San Gorgonio
Barstow
Big Bear
Cajon-Baldy Mesa
Chino
Crestline
El Mirage-Shadow Mountain relay station
Fontana
Helendale-Quartzite Mountain
Hesperia-Olive Street
Hinckley-Jim Doering relay station
Joshua Tree NP
Lucerne Valley-Middle School
Ludlow
Ontario Near Road (Etiwanda)
Ontario-Route 60 Near Road
Phelan-Beekley Road & Phelan Road
Redlands
SA Recycling
SAN BERNADINO AIRPORT (NORTON AFB)
Frequently Asked Questions
What is the air quality in San Bernardino, California?
Based on EPA data from 2024, San Bernardino has a median Air Quality Index (AQI) of 87, which is classified as "Moderate." The primary pollutant is Ozone. Over the past 10 years, air quality has been stable.
Is San Bernardino a good place to live for air quality?
San Bernardino has a 10-year average median AQI of 83. In 2024, there were 40 days with "Good" air quality and 144 days with unhealthy conditions. Unusually sensitive individuals should consider reducing prolonged outdoor exertion.
What pollutants affect San Bernardino the most?
The primary pollutant driving the AQI in San Bernardino is Ozone. This is monitored by 28 active EPA stations in the county. Other pollutants tracked include ozone, PM10, nitrogen dioxide, sulfur dioxide, and carbon monoxide.
How many air quality monitoring stations are in San Bernardino?
There are 28 active EPA monitoring stations in San Bernardino, California. These stations continuously measure pollutant levels and contribute to the daily AQI calculations.