ID: 1067

AQSQID: 490495010

Site Name: Spanish Fork

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

Updated: May 6, 2021, 5:46 p.m.

Location: Spanish Fork (W 2050 N St), UT

Reporting: True, Located: True

Current AQI: 43.0

Spanish Fork (W 2050 N St) UT, US: 40.136398, -111.660202

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
May 6, 2021, 4 p.m. 8.9 ppb (9) 2.9 ppb (3) N/A 6.0 ppb (6) N/A N/A 46.0 ppb (43) N/A N/A 5.8 μg/m3 (25) 43.0
 
May 6, 2021, 3 p.m. 20.3 ppb (20) 7.5 ppb (8) N/A 13.0 ppb (13) N/A N/A 38.0 ppb (36) N/A N/A 8.0 μg/m3 (34) 36.0
 
May 6, 2021, 2 p.m. 12.5 ppb (12) 5.1 ppb (5) N/A 8.0 ppb (8) N/A N/A 43.0 ppb (40) N/A N/A 5.9 μg/m3 (25) 40.0
 
May 6, 2021, 1 p.m. 14.2 ppb (14) 5.4 ppb (6) N/A 9.0 ppb (9) N/A N/A 38.0 ppb (36) N/A N/A 6.2 μg/m3 (26) 36.0
 
May 6, 2021, noon 9.0 ppb (9) 1.4 ppb (2) N/A 8.0 ppb (8) N/A N/A 42.0 ppb (39) N/A N/A 5.9 μg/m3 (25) 39.0
 
May 6, 2021, 11 a.m. 6.4 ppb (7) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 43.0 ppb (40) N/A N/A 5.2 μg/m3 (22) 40.0
 
May 6, 2021, 10 a.m. 4.6 ppb (5) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (42) N/A N/A 5.1 μg/m3 (22) 42.0
 
May 6, 2021, 9 a.m. 6.5 ppb (7) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 44.0 ppb (41) N/A N/A 5.1 μg/m3 (22) 41.0
 
May 6, 2021, 8 a.m. 4.6 ppb (5) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (42) N/A N/A 4.8 μg/m3 (20) 42.0
 
May 6, 2021, 7 a.m. 5.3 ppb (5) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (41) N/A N/A 5.0 μg/m3 (21) 41.0
 
May 6, 2021, 6 a.m. 7.7 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A 43.0 ppb (40) N/A N/A 6.1 μg/m3 (26) 40.0
 
May 6, 2021, 5 a.m. 5.2 ppb (5) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 45.0 ppb (42) N/A N/A 5.4 μg/m3 (23) 42.0
 
May 6, 2021, 4 a.m. 8.7 ppb (9) 0.8 ppb (1) N/A 8.0 ppb (8) N/A N/A 43.0 ppb (40) N/A N/A 6.3 μg/m3 (27) 40.0
 
May 6, 2021, 3 a.m. 10.6 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (10) N/A N/A 44.0 ppb (41) N/A N/A 5.7 μg/m3 (24) 41.0
 
May 6, 2021, 2 a.m. 2.6 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 58.0 ppb (61) N/A N/A 5.9 μg/m3 (25) 61.0
 
May 6, 2021, 1 a.m. 1.8 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 59.0 ppb (65) N/A N/A 3.5 μg/m3 (15) 65.0
 
May 6, 2021, midnight 1.2 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 61.0 ppb (71) N/A N/A 3.6 μg/m3 (16) 71.0
 
May 5, 2021, 11 p.m. 1.6 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 64.0 ppb (81) N/A N/A 3.8 μg/m3 (16) 81.0
 
May 5, 2021, 10 p.m. 1.5 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 65.0 ppb (84) N/A N/A 4.6 μg/m3 (20) 84.0
 
May 5, 2021, 9 p.m. 2.7 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 61.0 ppb (71) N/A N/A 5.1 μg/m3 (22) 71.0
 
May 5, 2021, 8 p.m. 2.3 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 58.0 ppb (61) N/A N/A 4.4 μg/m3 (19) 61.0
 
May 5, 2021, 7 p.m. 2.7 ppb (3) 1.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 57.0 ppb (58) N/A N/A 5.0 μg/m3 (21) 58.0
 
May 5, 2021, 6 p.m. 1.7 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 53.0 ppb (50) N/A N/A 3.4 μg/m3 (15) 50.0
 
May 5, 2021, 5 p.m. 2.0 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 50.0 ppb (47) N/A N/A 3.1 μg/m3 (13) 47.0
 
May 5, 2021, 4 p.m. 3.9 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) N/A N/A 3.7 μg/m3 (16) 41.0
 
May 5, 2021, 3 p.m. 6.1 ppb (6) 2.3 ppb (3) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (37) N/A N/A 4.1 μg/m3 (18) 37.0
 
May 5, 2021, 2 p.m. 24.3 ppb (23) 11.2 ppb (11) N/A 14.0 ppb (14) N/A N/A 23.0 ppb (22) N/A N/A 6.3 μg/m3 (27) 27.0
 
May 5, 2021, 1 p.m. 23.3 ppb (22) 8.9 ppb (9) N/A 15.0 ppb (15) N/A N/A 19.0 ppb (18) N/A N/A 5.7 μg/m3 (24) 24.0
 
May 5, 2021, noon 21.2 ppb (20) 4.6 ppb (5) N/A 17.0 ppb (17) N/A N/A 17.0 ppb (16) N/A N/A 6.4 μg/m3 (27) 27.0
 
May 5, 2021, 11 a.m. 17.9 ppb (17) 2.4 ppb (3) N/A 16.0 ppb (16) N/A N/A 19.0 ppb (18) N/A N/A 4.9 μg/m3 (21) 21.0
 
May 5, 2021, 10 a.m. 10.3 ppb (10) 1.3 ppb (2) N/A 9.0 ppb (9) N/A N/A 23.0 ppb (22) N/A N/A 4.1 μg/m3 (18) 22.0
 
May 5, 2021, 9 a.m. 8.3 ppb (8) 1.1 ppb (2) N/A 8.0 ppb (8) N/A N/A 27.0 ppb (25) N/A N/A 4.9 μg/m3 (21) 25.0
 
May 5, 2021, 8 a.m. 8.8 ppb (9) 0.7 ppb (1) N/A 8.0 ppb (8) N/A N/A 26.0 ppb (25) N/A N/A 3.9 μg/m3 (17) 25.0
 
May 5, 2021, 7 a.m. 6.5 ppb (7) 0.8 ppb (1) N/A 6.0 ppb (6) N/A N/A 30.0 ppb (28) N/A N/A 3.4 μg/m3 (15) 28.0
 
May 5, 2021, 6 a.m. 9.8 ppb (10) 0.6 ppb (1) N/A 10.0 ppb (10) N/A N/A 28.0 ppb (26) N/A N/A 4.3 μg/m3 (18) 26.0
 
May 5, 2021, 5 a.m. 8.2 ppb (8) 0.5 ppb (1) N/A 8.0 ppb (8) N/A N/A 33.0 ppb (31) N/A N/A 3.8 μg/m3 (16) 31.0
 
May 5, 2021, 4 a.m. 7.8 ppb (8) 1.0 ppb (1) N/A 7.0 ppb (7) N/A N/A 36.0 ppb (34) N/A N/A 3.9 μg/m3 (17) 34.0
 
May 5, 2021, 3 a.m. 15.2 ppb (15) 0.6 ppb (1) N/A 15.0 ppb (15) N/A N/A 28.0 ppb (26) N/A N/A 5.2 μg/m3 (22) 26.0
 
May 5, 2021, 2 a.m. 10.1 ppb (10) 1.0 ppb (1) N/A 10.0 ppb (10) N/A N/A 32.0 ppb (30) N/A N/A 18.3 μg/m3 (65) 65.0
 
May 5, 2021, 1 a.m. 2.8 ppb (3) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 46.0 ppb (43) N/A N/A 5.7 μg/m3 (24) 43.0
 
May 5, 2021, midnight 2.0 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (50) N/A N/A 3.9 μg/m3 (17) 50.0
 
May 4, 2021, 11 p.m. 2.1 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 57.0 ppb (58) N/A N/A 3.9 μg/m3 (17) 58.0
 
May 4, 2021, 10 p.m. 2.0 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 58.0 ppb (61) N/A N/A 4.0 μg/m3 (17) 61.0
 
May 4, 2021, 9 p.m. 1.7 ppb (2) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 56.0 ppb (55) N/A N/A 4.2 μg/m3 (18) 55.0
 
May 4, 2021, 8 p.m. 1.5 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (50) N/A N/A 4.0 μg/m3 (17) 50.0
 
May 4, 2021, 7 p.m. 1.9 ppb (2) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 51.0 ppb (48) N/A N/A 4.7 μg/m3 (20) 48.0
 
May 4, 2021, 6 p.m. 2.9 ppb (3) 1.3 ppb (2) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (46) N/A N/A 3.6 μg/m3 (16) 46.0
 
May 4, 2021, 5 p.m. 5.1 ppb (5) 2.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (42) N/A N/A 4.2 μg/m3 (18) 42.0
 
May 4, 2021, 4 p.m. 16.7 ppb (16) 7.7 ppb (8) N/A 9.0 ppb (9) N/A N/A 35.0 ppb (33) N/A N/A 7.2 μg/m3 (31) 33.0
 
May 4, 2021, 3 p.m. 11.5 ppb (11) 5.3 ppb (5) N/A 7.0 ppb (7) N/A N/A 31.0 ppb (29) N/A N/A 5.4 μg/m3 (23) 29.0
 
May 4, 2021, 2 p.m. 12.2 ppb (12) 5.4 ppb (6) N/A 7.0 ppb (7) N/A N/A 27.0 ppb (25) N/A N/A 6.4 μg/m3 (27) 27.0
 
May 4, 2021, 1 p.m. 11.9 ppb (12) 4.1 ppb (4) N/A 8.0 ppb (8) N/A N/A 23.0 ppb (22) N/A N/A 5.5 μg/m3 (23) 23.0
 
May 4, 2021, noon 13.4 ppb (13) 4.0 ppb (4) N/A 10.0 ppb (10) N/A N/A 21.0 ppb (20) N/A N/A 5.7 μg/m3 (24) 24.0
 
May 4, 2021, 11 a.m. 5.4 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) N/A N/A 3.4 μg/m3 (15) 25.0
 
May 4, 2021, 10 a.m. 5.7 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 28.0 ppb (26) N/A N/A 4.2 μg/m3 (18) 26.0
 
May 4, 2021, 9 a.m. 3.5 ppb (4) 0.6 ppb (1) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) N/A N/A 3.4 μg/m3 (15) 28.0
 
May 4, 2021, 8 a.m. 4.0 ppb (4) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 31.0 ppb (29) N/A N/A 3.5 μg/m3 (15) 29.0
 
May 4, 2021, 7 a.m. 5.5 ppb (6) 0.8 ppb (1) N/A 5.0 ppb (5) N/A N/A 31.0 ppb (29) N/A N/A 3.4 μg/m3 (15) 29.0
 
May 4, 2021, 6 a.m. 6.0 ppb (6) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 31.0 ppb (29) N/A N/A 2.7 μg/m3 (12) 29.0
 
May 4, 2021, 5 a.m. 7.1 ppb (7) 0.5 ppb (1) N/A 7.0 ppb (7) N/A N/A 29.0 ppb (27) N/A N/A 3.2 μg/m3 (14) 27.0
 
May 4, 2021, 4 a.m. 7.0 ppb (7) 0.5 ppb (1) N/A 7.0 ppb (7) N/A N/A 36.0 ppb (34) N/A N/A 3.1 μg/m3 (13) 34.0
 
May 4, 2021, 3 a.m. 3.6 ppb (4) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 41.0 ppb (38) N/A N/A 2.0 μg/m3 (9) 38.0
 
May 4, 2021, 2 a.m. 2.5 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 45.0 ppb (42) N/A N/A 2.1 μg/m3 (9) 42.0
 
May 4, 2021, 1 a.m. 2.4 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (44) N/A N/A 2.4 μg/m3 (10) 44.0
 
May 4, 2021, midnight 2.6 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 49.0 ppb (46) N/A N/A 2.9 μg/m3 (13) 46.0
 
May 3, 2021, 11 p.m. 3.0 ppb (3) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 50.0 ppb (47) N/A N/A 3.7 μg/m3 (16) 47.0
 
May 3, 2021, 10 p.m. 3.4 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (48) N/A N/A 4.6 μg/m3 (20) 48.0
 
May 3, 2021, 9 p.m. 3.4 ppb (4) 1.1 ppb (2) N/A 3.0 ppb (3) N/A N/A 49.0 ppb (46) N/A N/A 3.2 μg/m3 (14) 46.0
 
May 3, 2021, 8 p.m. 3.1 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (44) N/A N/A 3.3 μg/m3 (14) 44.0
 
May 3, 2021, 7 p.m. 3.6 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 44.0 ppb (41) N/A N/A 3.8 μg/m3 (16) 41.0
 
May 3, 2021, 6 p.m. 2.8 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) N/A N/A 2.8 μg/m3 (12) 41.0
 
May 3, 2021, 5 p.m. 3.4 ppb (4) 1.2 ppb (2) N/A 3.0 ppb (3) N/A N/A 41.0 ppb (38) N/A N/A 3.7 μg/m3 (16) 38.0
 
May 3, 2021, 4 p.m. 12.1 ppb (12) 4.8 ppb (5) N/A 8.0 ppb (8) N/A N/A 35.0 ppb (33) N/A N/A 5.1 μg/m3 (22) 33.0
 
May 3, 2021, 3 p.m. 5.9 ppb (6) 2.3 ppb (3) N/A 4.0 ppb (4) N/A N/A 36.0 ppb (34) N/A N/A 4.8 μg/m3 (20) 34.0
 
May 3, 2021, 2 p.m. 17.8 ppb (17) 8.0 ppb (8) N/A 10.0 ppb (10) N/A N/A 26.0 ppb (25) N/A N/A 8.0 μg/m3 (34) 34.0
 
May 3, 2021, 1 p.m. 37.6 ppb (36) 15.2 ppb (15) N/A 23.0 ppb (22) N/A N/A 11.0 ppb (11) N/A N/A 9.8 μg/m3 (41) 41.0
 
May 3, 2021, noon 22.3 ppb (22) 6.9 ppb (7) N/A 16.0 ppb (16) N/A N/A 13.0 ppb (13) N/A N/A 7.2 μg/m3 (31) 31.0
 
May 3, 2021, 11 a.m. 11.1 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (11) N/A N/A 22.0 ppb (21) N/A N/A 5.0 μg/m3 (21) 21.0
 
May 3, 2021, 10 a.m. 7.7 ppb (8) 0.6 ppb (1) N/A 8.0 ppb (8) N/A N/A 25.0 ppb (24) N/A N/A 5.0 μg/m3 (21) 24.0
 
May 3, 2021, 9 a.m. 11.6 ppb (11) 0.6 ppb (1) N/A 11.0 ppb (11) N/A N/A 21.0 ppb (20) N/A N/A 6.2 μg/m3 (26) 26.0
 
May 3, 2021, 8 a.m. 11.2 ppb (11) 0.6 ppb (1) N/A 11.0 ppb (11) N/A N/A 20.0 ppb (19) N/A N/A 5.7 μg/m3 (24) 24.0
 
May 3, 2021, 7 a.m. 5.7 ppb (6) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 29.0 ppb (27) N/A N/A 3.8 μg/m3 (16) 27.0
 
May 3, 2021, 6 a.m. 6.4 ppb (7) 0.4 ppb (1) N/A 6.0 ppb (6) N/A N/A 32.0 ppb (30) N/A N/A 3.4 μg/m3 (15) 30.0
 
May 3, 2021, 5 a.m. 6.9 ppb (7) 0.4 ppb (1) N/A 7.0 ppb (7) N/A N/A 34.0 ppb (32) N/A N/A 3.2 μg/m3 (14) 32.0
 
May 3, 2021, 4 a.m. 2.4 ppb (3) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) N/A N/A 2.6 μg/m3 (11) 41.0
 
May 3, 2021, 3 a.m. 2.1 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 48.0 ppb (45) N/A N/A 2.6 μg/m3 (11) 45.0
 
May 3, 2021, 2 a.m. 1.9 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) N/A N/A 2.8 μg/m3 (12) 43.0
 
May 3, 2021, 1 a.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) N/A N/A 3.2 μg/m3 (14) 43.0
 
May 3, 2021, midnight 1.4 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A N/A 2.4 μg/m3 (10) 45.0
 
May 2, 2021, 11 p.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (47) N/A N/A 2.3 μg/m3 (10) 47.0
 
May 2, 2021, 10 p.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (47) N/A N/A 2.4 μg/m3 (10) 47.0
 
May 2, 2021, 9 p.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 52.0 ppb (49) N/A N/A 2.8 μg/m3 (12) 49.0
 
May 2, 2021, 8 p.m. 1.4 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (50) N/A N/A 3.0 μg/m3 (13) 50.0
 
May 2, 2021, 7 p.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 54.0 ppb (50) N/A N/A 3.2 μg/m3 (14) 50.0
 
May 2, 2021, 6 p.m. 1.2 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (47) N/A N/A 3.3 μg/m3 (14) 47.0
 
May 2, 2021, 5 p.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A N/A 3.5 μg/m3 (15) 46.0
 
May 2, 2021, 4 p.m. 2.0 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) N/A N/A 2.4 μg/m3 (10) 40.0
 
May 2, 2021, 3 p.m. 1.7 ppb (2) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A N/A 2.3 μg/m3 (10) 38.0
 
May 2, 2021, 2 p.m. 1.8 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A N/A 2.3 μg/m3 (10) 38.0
 
May 2, 2021, 1 p.m. 3.7 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 3.4 μg/m3 (15) 34.0
 
May 2, 2021, noon 2.9 ppb (3) 0.5 ppb (1) N/A 3.0 ppb (3) N/A N/A 36.0 ppb (34) N/A N/A 4.3 μg/m3 (18) 34.0
 
May 2, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 37.0 ppb (35) N/A N/A 5.0 μg/m3 (21) 35.0
 
May 2, 2021, 10 a.m. 3.9 ppb (4) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 34.0 ppb (32) N/A N/A 6.9 μg/m3 (29) 32.0
 
May 2, 2021, 9 a.m. 2.1 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) N/A N/A 6.8 μg/m3 (29) 40.0
 
May 2, 2021, 8 a.m. 2.5 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (38) N/A N/A 7.9 μg/m3 (33) 38.0
 
May 2, 2021, 7 a.m. 2.6 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 40.0 ppb (38) N/A N/A 8.5 μg/m3 (36) 38.0
 
May 2, 2021, 6 a.m. 3.7 ppb (4) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (37) N/A N/A 5.9 μg/m3 (25) 37.0
 
May 2, 2021, 5 a.m. 5.1 ppb (5) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 40.0 ppb (38) N/A N/A 4.6 μg/m3 (20) 38.0
 
May 2, 2021, 4 a.m. 4.0 ppb (4) 0.5 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (41) N/A N/A 3.1 μg/m3 (13) 41.0
 
May 2, 2021, 3 a.m. 3.7 ppb (4) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (44) N/A N/A 9.9 μg/m3 (42) 44.0
 
May 2, 2021, 2 a.m. 2.6 ppb (3) 0.3 ppb (1) N/A 3.0 ppb (3) N/A N/A 51.0 ppb (48) N/A N/A 7.5 μg/m3 (32) 48.0
 
May 2, 2021, 1 a.m. 1.3 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 53.0 ppb (50) N/A N/A 5.2 μg/m3 (22) 50.0
 
May 2, 2021, midnight 2.9 ppb (3) 0.4 ppb (1) N/A 3.0 ppb (3) N/A N/A 47.0 ppb (44) N/A N/A 9.3 μg/m3 (39) 44.0
 
May 1, 2021, 11 p.m. 1.9 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) N/A N/A 3.6 μg/m3 (16) 43.0
 
May 1, 2021, 10 p.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 48.0 ppb (45) N/A N/A 3.1 μg/m3 (13) 45.0
 
May 1, 2021, 9 p.m. 1.9 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 44.0 ppb (41) N/A N/A 3.3 μg/m3 (14) 41.0
 
May 1, 2021, 8 p.m. 1.7 ppb (2) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 47.0 ppb (44) N/A N/A 2.8 μg/m3 (12) 44.0
 
May 1, 2021, 7 p.m. 2.2 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 46.0 ppb (43) N/A N/A 2.7 μg/m3 (12) 43.0
 
May 1, 2021, 6 p.m. 4.2 ppb (4) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 45.0 ppb (42) N/A N/A 2.8 μg/m3 (12) 42.0
 
May 1, 2021, 5 p.m. 5.9 ppb (6) 1.6 ppb (2) N/A 5.0 ppb (5) N/A N/A 43.0 ppb (40) N/A N/A 3.2 μg/m3 (14) 40.0
 
May 1, 2021, 4 p.m. 11.0 ppb (11) 3.6 ppb (4) N/A 8.0 ppb (8) N/A N/A 37.0 ppb (35) N/A N/A 3.7 μg/m3 (16) 35.0
 
May 1, 2021, 3 p.m. 10.3 ppb (10) 3.2 ppb (4) N/A 8.0 ppb (8) N/A N/A 34.0 ppb (32) N/A N/A 3.6 μg/m3 (16) 32.0
 
May 1, 2021, 2 p.m. 6.7 ppb (7) 1.7 ppb (2) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) N/A N/A 3.2 μg/m3 (14) 33.0
 
May 1, 2021, 1 p.m. 5.5 ppb (6) 0.9 ppb (1) N/A 5.0 ppb (5) N/A N/A 34.0 ppb (32) N/A N/A 3.1 μg/m3 (13) 32.0
 
May 1, 2021, noon 5.1 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A 35.0 ppb (33) N/A N/A 3.3 μg/m3 (14) 33.0
 
May 1, 2021, 11 a.m. 5.0 ppb (5) 0.6 ppb (1) N/A 5.0 ppb (5) N/A N/A N/A N/A N/A 3.4 μg/m3 (15) 15.0
 
May 1, 2021, 10 a.m. 4.3 ppb (5) 0.4 ppb (1) N/A 4.0 ppb (4) N/A N/A 37.0 ppb (35) N/A N/A 3.6 μg/m3 (16) 35.0
 
May 1, 2021, 9 a.m. 5.1 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (36) N/A N/A 3.4 μg/m3 (15) 36.0
 
May 1, 2021, 8 a.m. 3.7 ppb (4) 0.7 ppb (1) N/A 3.0 ppb (3) N/A N/A 39.0 ppb (37) N/A N/A 3.2 μg/m3 (14) 37.0
 
May 1, 2021, 7 a.m. 6.7 ppb (7) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 38.0 ppb (36) N/A N/A 3.4 μg/m3 (15) 36.0
 
May 1, 2021, 6 a.m. 4.9 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 39.0 ppb (37) N/A N/A 3.1 μg/m3 (13) 37.0
 
May 1, 2021, 5 a.m. 6.6 ppb (7) 1.4 ppb (2) N/A 6.0 ppb (6) N/A N/A 39.0 ppb (37) N/A N/A 3.3 μg/m3 (14) 37.0
 
May 1, 2021, 4 a.m. 8.7 ppb (9) 1.7 ppb (2) N/A 7.0 ppb (7) N/A N/A 41.0 ppb (38) N/A N/A 5.0 μg/m3 (21) 38.0
 
May 1, 2021, 3 a.m. 26.4 ppb (25) 3.6 ppb (4) N/A 23.0 ppb (22) N/A N/A 21.0 ppb (20) N/A N/A 5.9 μg/m3 (25) 25.0
 
May 1, 2021, 2 a.m. 9.1 ppb (9) 1.0 ppb (1) N/A 8.0 ppb (8) N/A N/A 35.0 ppb (33) N/A N/A 3.7 μg/m3 (16) 33.0
 
May 1, 2021, 1 a.m. 4.4 ppb (5) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 44.0 ppb (41) N/A N/A 1.8 μg/m3 (8) 41.0
 
May 1, 2021, midnight 2.3 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 54.0 ppb (50) N/A N/A 1.7 μg/m3 (8) 50.0
 
April 30, 2021, 11 p.m. 1.8 ppb (2) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 57.0 ppb (58) N/A N/A 1.7 μg/m3 (8) 58.0
 
April 30, 2021, 10 p.m. 1.6 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 57.0 ppb (58) N/A N/A 1.7 μg/m3 (8) 58.0
 
April 30, 2021, 9 p.m. 1.7 ppb (2) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 56.0 ppb (55) N/A N/A 1.9 μg/m3 (8) 55.0
 
April 30, 2021, 8 p.m. 2.2 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 57.0 ppb (58) N/A N/A 2.7 μg/m3 (12) 58.0
 
April 30, 2021, 7 p.m. 3.1 ppb (3) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 59.0 ppb (65) N/A N/A 9.0 μg/m3 (38) 65.0
 
April 30, 2021, 6 p.m. 4.7 ppb (5) 1.2 ppb (2) N/A 4.0 ppb (4) N/A N/A 55.0 ppb (51) N/A N/A 4.5 μg/m3 (19) 51.0
 
April 30, 2021, 5 p.m. 9.7 ppb (10) 3.0 ppb (3) N/A 7.0 ppb (7) N/A N/A 46.0 ppb (43) N/A N/A 5.9 μg/m3 (25) 43.0
 
April 30, 2021, 4 p.m. 9.1 ppb (9) 3.0 ppb (3) N/A 7.0 ppb (7) N/A N/A 42.0 ppb (39) N/A N/A 5.0 μg/m3 (21) 39.0
 
April 30, 2021, 3 p.m. 12.2 ppb (12) 4.5 ppb (5) N/A 8.0 ppb (8) N/A N/A 39.0 ppb (37) N/A N/A 5.1 μg/m3 (22) 37.0
 
April 30, 2021, 2 p.m. 14.9 ppb (15) 5.7 ppb (6) N/A 10.0 ppb (10) N/A N/A 28.0 ppb (26) N/A N/A 6.8 μg/m3 (29) 29.0
 
April 30, 2021, 1 p.m. 18.1 ppb (18) 4.4 ppb (5) N/A 14.0 ppb (14) N/A N/A 26.0 ppb (25) N/A N/A 6.6 μg/m3 (28) 28.0
 
April 30, 2021, noon 17.3 ppb (17) 2.5 ppb (3) N/A 15.0 ppb (15) N/A N/A 20.0 ppb (19) N/A N/A 6.7 μg/m3 (28) 28.0
 
April 30, 2021, 11 a.m. N/A N/A N/A N/A N/A N/A 34.0 ppb (32) N/A N/A 5.0 μg/m3 (21) 32.0
 
April 30, 2021, 10 a.m. 6.6 ppb (7) 0.5 ppb (1) N/A 7.0 ppb (7) N/A N/A 37.0 ppb (35) N/A N/A 4.3 μg/m3 (18) 35.0
 
April 30, 2021, 9 a.m. 5.8 ppb (6) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (35) N/A N/A 4.1 μg/m3 (18) 35.0
 
April 30, 2021, 8 a.m. 7.8 ppb (8) 0.7 ppb (1) N/A 8.0 ppb (8) N/A N/A 37.0 ppb (35) N/A N/A 3.8 μg/m3 (16) 35.0
 
April 30, 2021, 7 a.m. 7.2 ppb (7) 0.9 ppb (1) N/A 7.0 ppb (7) N/A N/A 37.0 ppb (35) N/A N/A 3.1 μg/m3 (13) 35.0
 
April 30, 2021, 6 a.m. 6.3 ppb (6) 0.5 ppb (1) N/A 6.0 ppb (6) N/A N/A 37.0 ppb (35) N/A N/A 3.5 μg/m3 (15) 35.0
 
April 30, 2021, 5 a.m. 11.6 ppb (11) 0.9 ppb (1) N/A 11.0 ppb (11) N/A N/A 36.0 ppb (34) N/A N/A 4.1 μg/m3 (18) 34.0
 
April 30, 2021, 4 a.m. 15.4 ppb (15) 1.1 ppb (2) N/A 15.0 ppb (15) N/A N/A 23.0 ppb (22) N/A N/A 3.6 μg/m3 (16) 22.0
 
April 30, 2021, 3 a.m. 7.5 ppb (8) 1.1 ppb (2) N/A 7.0 ppb (7) N/A N/A 38.0 ppb (36) N/A N/A 2.2 μg/m3 (10) 36.0
 
April 30, 2021, 2 a.m. 5.4 ppb (6) 0.5 ppb (1) N/A 5.0 ppb (5) N/A N/A 44.0 ppb (41) N/A N/A 2.5 μg/m3 (11) 41.0
 
April 30, 2021, 1 a.m. 4.4 ppb (5) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 53.0 ppb (50) N/A N/A 2.6 μg/m3 (11) 50.0
 
April 30, 2021, midnight 3.9 ppb (4) 0.6 ppb (1) N/A 4.0 ppb (4) N/A N/A 66.0 ppb (87) N/A N/A 6.4 μg/m3 (27) 87.0
 
April 29, 2021, 11 p.m. 4.2 ppb (4) 0.7 ppb (1) N/A 4.0 ppb (4) N/A N/A 70.0 ppb (100) N/A N/A 9.7 μg/m3 (41) 100.0
 
April 29, 2021, 10 p.m. 6.4 ppb (7) 1.8 ppb (2) N/A 5.0 ppb (5) N/A N/A 68.0 ppb (94) N/A N/A 12.9 μg/m3 (53) 94.0
 
April 29, 2021, 9 p.m. 5.4 ppb (6) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 59.0 ppb (65) N/A N/A 5.7 μg/m3 (24) 65.0
 
April 29, 2021, 8 p.m. 11.5 ppb (11) 1.7 ppb (2) N/A 10.0 ppb (10) N/A N/A 60.0 ppb (68) N/A N/A 8.3 μg/m3 (35) 68.0
 
April 29, 2021, 7 p.m. 2.7 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 59.0 ppb (65) N/A N/A 7.8 μg/m3 (33) 65.0
 
April 29, 2021, 6 p.m. 3.3 ppb (4) 0.9 ppb (1) N/A 3.0 ppb (3) N/A N/A 54.0 ppb (50) N/A N/A 8.8 μg/m3 (37) 50.0
 
April 29, 2021, 5 p.m. 5.2 ppb (5) 1.9 ppb (2) N/A 4.0 ppb (4) N/A N/A 47.0 ppb (44) N/A N/A 6.9 μg/m3 (29) 44.0