ID: 165

AQSQID: 060570005

Site Name: Grass Valley

Added: April 21, 2020, 6:24 p.m.

Updated: May 28, 2022, 2:26 p.m.

Location: Grass Valley (Litton Dr), CA

Reporting: True, Located: True

Current AQI: 9.0

Grass Valley (Litton Dr) CA, US: 39.234402, -121.055603

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 28, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
May 28, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 2.0 μg/m3 (9) 24.0
 
May 28, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 2.0 μg/m3 (9) 24.0
 
May 28, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 25.0 ppb (24) N/A N/A 2.0 μg/m3 (9) 24.0
 
May 28, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
May 28, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 4.0 μg/m3 (17) 25.0
 
May 28, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
May 28, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A 26.0 ppb (25) N/A N/A 5.0 μg/m3 (21) 25.0
 
May 28, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
May 28, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
May 28, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
May 28, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
May 28, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
May 28, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
May 28, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
May 28, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
May 28, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
May 28, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 41.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
May 27, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 4.0 μg/m3 (17) 36.0
 
May 27, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 38.0 ppb (36) N/A N/A 4.0 μg/m3 (17) 36.0
 
May 27, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 2.0 μg/m3 (9) 32.0
 
May 27, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 3.0 μg/m3 (13) 32.0
 
May 27, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 3.0 μg/m3 (13) 32.0
 
May 27, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 3.0 μg/m3 (13) 34.0
 
May 27, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
May 27, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
May 27, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 6.0 μg/m3 (25) 34.0
 
May 27, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
May 27, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 5.0 μg/m3 (21) 21.0
 
May 27, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 2.0 μg/m3 (9) 42.0
 
May 27, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 2.0 μg/m3 (9) 43.0
 
May 27, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 0.0 μg/m3 (0) 43.0
 
May 27, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 4.0 μg/m3 (17) 44.0
 
May 27, 2022, midnight N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 3.0 μg/m3 (13) 44.0
 
May 26, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 0.0 μg/m3 (0) 46.0
 
May 26, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 0.0 μg/m3 (0) 50.0
 
May 26, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 2.0 μg/m3 (9) 50.0
 
May 26, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 0.0 μg/m3 (0) 48.0
 
May 26, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 0.0 μg/m3 (0) 48.0
 
May 26, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 5.0
 
May 26, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 1.0 μg/m3 (5) 45.0
 
May 26, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 4.0 μg/m3 (17) 44.0
 
May 26, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 4.0 μg/m3 (17) 44.0
 
May 26, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
May 26, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 6.0 μg/m3 (25) 43.0
 
May 26, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 1.0 μg/m3 (5) 46.0
 
May 26, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 1.0 μg/m3 (5) 43.0
 
May 26, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 5.0 μg/m3 (21) 46.0
 
May 26, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 10.0 μg/m3 (42) 45.0
 
May 26, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 7.0 μg/m3 (30) 49.0
 
May 26, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
May 26, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A N/A 6.0 μg/m3 (25) 97.0
 
May 26, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A N/A 6.0 μg/m3 (25) 97.0
 
May 26, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 69.0 ppb (97) N/A N/A 5.0 μg/m3 (21) 97.0
 
May 26, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A N/A 6.0 μg/m3 (25) 91.0
 
May 26, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 0.0 μg/m3 (0) 58.0
 
May 26, 2022, midnight N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A N/A 2.0 μg/m3 (9) 91.0
 
May 25, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 67.0 ppb (91) N/A N/A 4.0 μg/m3 (17) 91.0
 
May 25, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A N/A 1.0 μg/m3 (5) 81.0
 
May 25, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 64.0 ppb (81) N/A N/A 1.0 μg/m3 (5) 81.0
 
May 25, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 4.0 μg/m3 (17) 17.0
 
May 25, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 6.0 μg/m3 (25) 25.0
 
May 25, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 6.0 μg/m3 (25) 58.0
 
May 25, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
May 25, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 3.0 μg/m3 (13) 50.0
 
May 25, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 2.0 μg/m3 (9) 48.0
 
May 25, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 2.0 μg/m3 (9) 48.0
 
May 25, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 1.0 μg/m3 (5) 40.0
 
May 25, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 1.0 μg/m3 (5) 40.0
 
May 25, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 3.0 μg/m3 (13) 38.0
 
May 25, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 36.0 ppb (34) N/A N/A 5.0 μg/m3 (21) 34.0
 
May 25, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 40.0 ppb (38) N/A N/A 2.0 μg/m3 (9) 38.0
 
May 25, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 1.0 μg/m3 (5) 40.0
 
May 25, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
May 25, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
May 25, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 2.0 μg/m3 (9) 48.0
 
May 25, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 3.0 μg/m3 (13) 48.0
 
May 25, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 2.0 μg/m3 (9) 48.0
 
May 25, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 2.0 μg/m3 (9) 50.0
 
May 25, 2022, midnight N/A N/A N/A N/A N/A N/A 57.0 ppb (58) N/A N/A 2.0 μg/m3 (9) 58.0
 
May 24, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 59.0 ppb (65) N/A N/A 3.0 μg/m3 (13) 65.0
 
May 24, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A N/A 3.0 μg/m3 (13) 61.0
 
May 24, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 3.0 μg/m3 (13) 49.0
 
May 24, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 1.0 μg/m3 (5) 46.0
 
May 24, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 2.0 μg/m3 (9) 45.0
 
May 24, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 3.0 μg/m3 (13) 44.0
 
May 24, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 4.0 μg/m3 (17) 43.0
 
May 24, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 5.0 μg/m3 (21) 47.0
 
May 24, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 6.0 μg/m3 (25) 50.0
 
May 24, 2022, noon N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 4.0 μg/m3 (17) 50.0
 
May 24, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 3.0 μg/m3 (13) 50.0
 
May 24, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 3.0 μg/m3 (13) 50.0
 
May 24, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 4.0 μg/m3 (17) 48.0
 
May 24, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 1.0 μg/m3 (5) 47.0
 
May 24, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 5.0
 
May 24, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 1.0 μg/m3 (5) 47.0
 
May 24, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 1.0 μg/m3 (5) 46.0
 
May 24, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 1.0 μg/m3 (5) 46.0
 
May 24, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 2.0 μg/m3 (9) 9.0
 
May 24, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 2.0 μg/m3 (9) 45.0
 
May 24, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 2.0 μg/m3 (9) 46.0
 
May 24, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 2.0 μg/m3 (9) 46.0
 
May 24, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 0.0 μg/m3 (0) 46.0
 
May 24, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 0.0 μg/m3 (0) 46.0
 
May 24, 2022, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 2.0 μg/m3 (9) 46.0
 
May 24, 2022, midnight N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 2.0 μg/m3 (9) 46.0
 
May 23, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 4.0 μg/m3 (17) 47.0
 
May 23, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 4.0 μg/m3 (17) 47.0
 
May 23, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 4.0 μg/m3 (17) 49.0
 
May 23, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 2.0 μg/m3 (9) 44.0
 
May 23, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 2.0 μg/m3 (9) 40.0
 
May 23, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (5) 5.0
 
May 23, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 2.0 μg/m3 (9) 47.0
 
May 23, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 3.0 μg/m3 (13) 47.0
 
May 23, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 4.0 μg/m3 (17) 46.0
 
May 23, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 4.0 μg/m3 (17) 46.0
 
May 23, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 4.0 μg/m3 (17) 47.0
 
May 23, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
May 23, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A N/A N/A N/A 3.0 μg/m3 (13) 13.0
 
May 23, 2022, 6 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 3.0 μg/m3 (13) 50.0
 
May 23, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 1.0 μg/m3 (5) 50.0
 
May 23, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 0.0 μg/m3 (0) 50.0
 
May 23, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 54.0 ppb (50) N/A N/A 3.0 μg/m3 (13) 50.0
 
May 23, 2022, midnight N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 1.0 μg/m3 (5) 50.0
 
May 22, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 53.0 ppb (50) N/A N/A 0.0 μg/m3 (0) 50.0
 
May 22, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 0.0 μg/m3 (0) 47.0
 
May 22, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 0.0 μg/m3 (0) 46.0
 
May 22, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 1.0 μg/m3 (5) 45.0
 
May 22, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 0.0 μg/m3 (0) 45.0
 
May 22, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 1.0 μg/m3 (5) 41.0
 
May 22, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 2.0 μg/m3 (9) 41.0
 
May 22, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 1.0 μg/m3 (5) 40.0
 
May 22, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 0.0 μg/m3 (0) 43.0
 
May 22, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 0.0 μg/m3 (0) 47.0
 
May 22, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 0.0 μg/m3 (0) 47.0
 
May 22, 2022, noon N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 0.0 μg/m3 (0) 47.0
 
May 22, 2022, 11 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 2.0 μg/m3 (9) 46.0
 
May 22, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 48.0 ppb (45) N/A N/A 3.0 μg/m3 (13) 45.0
 
May 22, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 3.0 μg/m3 (13) 46.0
 
May 22, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 2.0 μg/m3 (9) 48.0
 
May 22, 2022, 7 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 3.0 μg/m3 (13) 48.0
 
May 22, 2022, 5 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 2.0 μg/m3 (9) 48.0
 
May 22, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 4.0 μg/m3 (17) 49.0
 
May 22, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 3.0 μg/m3 (13) 48.0
 
May 22, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 4.0 μg/m3 (17) 49.0
 
May 22, 2022, midnight N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 4.0 μg/m3 (17) 49.0
 
May 21, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 4.0 μg/m3 (17) 49.0
 
May 21, 2022, 10 p.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 3.0 μg/m3 (13) 49.0
 
May 21, 2022, 9 p.m. N/A N/A N/A N/A N/A N/A 51.0 ppb (48) N/A N/A 3.0 μg/m3 (13) 48.0
 
May 21, 2022, 8 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 4.0 μg/m3 (17) 46.0
 
May 21, 2022, 7 p.m. N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 4.0 μg/m3 (17) 43.0
 
May 21, 2022, 6 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 4.0 μg/m3 (17) 44.0
 
May 21, 2022, 5 p.m. N/A N/A N/A N/A N/A N/A 49.0 ppb (46) N/A N/A 4.0 μg/m3 (17) 46.0
 
May 21, 2022, 4 p.m. N/A N/A N/A N/A N/A N/A 47.0 ppb (44) N/A N/A 1.0 μg/m3 (5) 44.0
 
May 21, 2022, 3 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 4.0 μg/m3 (17) 40.0
 
May 21, 2022, 2 p.m. N/A N/A N/A N/A N/A N/A 43.0 ppb (40) N/A N/A 5.0 μg/m3 (21) 40.0
 
May 21, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 6.0 μg/m3 (25) 42.0
 
May 21, 2022, 1 p.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 6.0 μg/m3 (25) 42.0
 
May 21, 2022, noon N/A N/A N/A N/A N/A N/A 46.0 ppb (43) N/A N/A 6.0 μg/m3 (25) 43.0
 
May 21, 2022, 10 a.m. N/A N/A N/A N/A N/A N/A 45.0 ppb (42) N/A N/A 2.0 μg/m3 (9) 42.0
 
May 21, 2022, 9 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 6.0 μg/m3 (25) 41.0
 
May 21, 2022, 8 a.m. N/A N/A N/A N/A N/A N/A 44.0 ppb (41) N/A N/A 9.0 μg/m3 (38) 41.0
 
May 21, 2022, 4 a.m. N/A N/A N/A N/A N/A N/A 50.0 ppb (47) N/A N/A 3.0 μg/m3 (13) 47.0
 
May 21, 2022, 3 a.m. N/A N/A N/A N/A N/A N/A 52.0 ppb (49) N/A N/A 2.0 μg/m3 (9) 49.0
 
May 21, 2022, 2 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 3.0 μg/m3 (13) 51.0
 
May 21, 2022, 1 a.m. N/A N/A N/A N/A N/A N/A 55.0 ppb (51) N/A N/A 0.0 μg/m3 (0) 51.0
 
May 21, 2022, midnight N/A N/A N/A N/A N/A N/A 58.0 ppb (61) N/A N/A 2.0 μg/m3 (9) 61.0
 
May 20, 2022, 11 p.m. N/A N/A N/A N/A N/A N/A 61.0 ppb (71) N/A N/A 2.0 μg/m3 (9) 71.0